GitHub/MotorolaMobilityLLC/kernel-slsi.git
11 years agotarget/pscsi: fix return value check
Wei Yongjun [Fri, 25 Oct 2013 13:53:33 +0000 (21:53 +0800)]
target/pscsi: fix return value check

In case of error, the function scsi_host_lookup() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Fail XCOPY for non matching source + destination block_size
Nicholas Bellinger [Thu, 24 Oct 2013 07:27:00 +0000 (00:27 -0700)]
target: Fail XCOPY for non matching source + destination block_size

This patch adds an explicit check + failure for XCOPY I/O to source +
destination devices with a non-matching block_size.

This limitiation is currently due to the fact that the scatterlist
memory allocated for the XCOPY READ operation is passed zero-copy
to the XCOPY WRITE operation.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: Thomas Glanzmann <thomas@glanzmann.de>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Generate failure for XCOPY I/O with non-zero scsi_status
Nicholas Bellinger [Thu, 24 Oct 2013 07:15:27 +0000 (00:15 -0700)]
target: Generate failure for XCOPY I/O with non-zero scsi_status

This patch adds the missing non-zero se_cmd->scsi_status check required
for local XCOPY I/O within target_xcopy_issue_pt_cmd() to signal an
exception case failure.

This will trigger the generation of SAM_STAT_CHECK_CONDITION status
from within target_xcopy_do_work() process context code.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: Thomas Glanzmann <thomas@glanzmann.de>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Add missing XCOPY I/O operation sense_buffer
Nicholas Bellinger [Thu, 24 Oct 2013 07:10:36 +0000 (00:10 -0700)]
target: Add missing XCOPY I/O operation sense_buffer

This patch adds the missing xcopy_pt_cmd->sense_buffer[] required for
correctly handling CHECK_CONDITION exceptions within the locally
generated XCOPY I/O path.

Also update target_xcopy_read_source() + target_xcopy_setup_pt_cmd()
to pass this buffer into transport_init_se_cmd() to correctly setup
se_cmd->sense_buffer.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: Thomas Glanzmann <thomas@glanzmann.de>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agoiser-target: check device before dereferencing its variable
Vu Pham [Mon, 21 Oct 2013 21:48:54 +0000 (00:48 +0300)]
iser-target: check device before dereferencing its variable

This patch changes isert_connect_release() to correctly check for
the existence struct isert_device *device before checking for
isert_device->use_frwr.

Signed-off-by: Vu Pham <vu@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Return an error for WRITE SAME with ANCHOR==1
Roland Dreier [Mon, 14 Oct 2013 22:49:23 +0000 (15:49 -0700)]
target: Return an error for WRITE SAME with ANCHOR==1

Per SBC-3, since we report ANC_SUP==0 in VPD page B2h, we need to return
an error (ILLEGAL REQUEST/INVALID FIELD IN CDB) for all WRITE SAME
requests with ANCHOR==1.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Fix assignment of LUN in tracepoints
Roland Dreier [Tue, 8 Oct 2013 16:47:22 +0000 (09:47 -0700)]
target: Fix assignment of LUN in tracepoints

The unpacked_lun field in the SCSI target tracepoints should be
initialized with cmd->orig_fe_lun rather than cmd->se_lun->unpacked_lun
for two reasons:

 - most importantly, if we are in the cmd_complete tracepoint
   returning a check condition due to no LUN found, cmd->se_lun will
   be NULL and we'll crash trying to dereference it.

 - also, in any case, cmd->se_lun->unpacked_lun is an internal index
   into the target's internal set of LUNs; cmd->orig_fe_lun is much
   more useful and interesting, since it's the value the initiator
   actually sent.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Reject EXTENDED_COPY when emulate_3pc is disabled
Nicholas Bellinger [Tue, 8 Oct 2013 01:05:14 +0000 (18:05 -0700)]
target: Reject EXTENDED_COPY when emulate_3pc is disabled

This patch rejects EXTENDED_COPY when the emulate_3pc attribute has
been explicitly disabled for the receiving device.

It also adds a similar check in target_xcopy_locate_se_dev_e4() to
ignore these devices when doing a search based upon the identifier
WWN provided by EXTENDED_COPY parameter list target descriptors.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Allow non zero ListID in EXTENDED_COPY parameter list
Nicholas Bellinger [Mon, 7 Oct 2013 22:22:15 +0000 (15:22 -0700)]
target: Allow non zero ListID in EXTENDED_COPY parameter list

This patch changes target_do_xcopy() to allow processing of non-zero
ListIDs in EXTENDED_COPY parameter list data, instead of returning
CHECK_CONDITION status.

As the copy offload implementation reports SNLID=1 (Supports No ListID)
in OPERATING PARAMETERS, any ListID value presented by the client is
currently ignored.

Also, properly extract list_id_usage for informational purposes.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Make target_do_xcopy failures return INVALID_PARAMETER_LIST
Nicholas Bellinger [Mon, 7 Oct 2013 22:20:07 +0000 (15:20 -0700)]
target: Make target_do_xcopy failures return INVALID_PARAMETER_LIST

This patch changes target_do_xcopy() to properly return
TCM_INVALID_PARAMETER_LIST instead of TCM_INVALID_CDB_FIELD
for failures related to the EXTENDED_COPY parameter list parsing.

Also, move struct xcopy_op allocation ahead of kmapping to
handle the special TCM_OUT_OF_RESOURCES case.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agoiscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags
Nicholas Bellinger [Thu, 3 Oct 2013 21:03:59 +0000 (14:03 -0700)]
iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags

This patch bumps the default number of tags allocated per session by
iscsi-target via transport_alloc_session_tags() -> percpu_ida_init()
by another (tag_num / 2).

This is done to take into account the tags waiting to be acknowledged
and released in iscsit_ack_from_expstatsn(), but who's number are not
directly limited by the CmdSN Window queue_depth being enforced by
the target.

Using a larger value here is also useful to prevent percpu_ida_alloc()
from having to steal tags from other CPUs when no tags are available
on the local CPU, while waiting for unacknowledged tags to be released.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agoiscsi-target: Perform release of acknowledged tags from RX context
Nicholas Bellinger [Thu, 3 Oct 2013 20:56:14 +0000 (13:56 -0700)]
iscsi-target: Perform release of acknowledged tags from RX context

This patch converts iscsit_ack_from_expstatsn() to populate a local
ack_list of commands, and call iscsit_free_cmd() directly from RX
thread context, instead of using iscsit_add_cmd_to_immediate_queue()
to queue the acknowledged commands to be released from TX thread
context.

It is helpful to release the acknowledge commands as quickly as
possible, along with the associated percpu_ida tags, in order to
prevent percpu_ida_alloc() from having to steal tags from other
CPUs while waiting for iscsit_free_cmd() to happen from TX thread
context.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agoiscsi-target: Only perform wait_for_tasks when performing shutdown
Nicholas Bellinger [Thu, 3 Oct 2013 20:37:21 +0000 (13:37 -0700)]
iscsi-target: Only perform wait_for_tasks when performing shutdown

This patch changes transport_generic_free_cmd() to only wait_for_tasks
when shutdown=true is passed to iscsit_free_cmd().

With the advent of >= v3.10 iscsi-target code using se_cmd->cmd_kref,
the extra wait_for_tasks with shutdown=false is unnecessary, and may
end up causing an extra context switch when releasing WRITEs.

Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Fail on non zero scsi_status in compare_and_write_callback
Nicholas Bellinger [Wed, 2 Oct 2013 00:04:40 +0000 (17:04 -0700)]
target: Fail on non zero scsi_status in compare_and_write_callback

This patch addresses a bug for backends such as IBLOCK that perform
asynchronous completion via transport_complete_cmd(), that will call
target_complete_failure_work() -> transport_generic_request_failure(),
upon exception status and invoke cmd->transport_complete_callback()
-> compare_and_write_callback() incorrectly during the failure case.

It adds a check for a non zero se_cmd->scsi_status within the first
invocation of compare_and_write_callback(), and will jump to out plus
up se_device->caw_sem before exiting the callback.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Tested-by: Thomas Glanzmann <thomas@glanzmann.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Fix recursive COMPARE_AND_WRITE callback failure
Nicholas Bellinger [Tue, 1 Oct 2013 23:53:10 +0000 (16:53 -0700)]
target: Fix recursive COMPARE_AND_WRITE callback failure

This patch addresses a bug when compare_and_write_callback() invoked from
target_complete_ok_work() hits an failure from __target_execute_cmd() ->
cmd->execute_cmd(), that ends up calling transport_generic_request_failure()
-> compare_and_write_post(), thus causing SCF_COMPARE_AND_WRITE_POST to
incorrectly be set.

The result of this bug is that target_complete_ok_work() no longer hits
the if (!rc && !(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE_POST) check
that forces an immediate return, and instead double completes the se_cmd
in question, triggering an OOPs in the process.

This patch changes compare_and_write_post() to only set this bit when a
failure has not already occured to ensure the immediate return from within
target_complete_ok_work(), and thus allow transport_generic_request_failure()
to handle the sending of the CHECK_CONDITION exception status.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Tested-by: Thomas Glanzmann <thomas@glanzmann.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size
Nicholas Bellinger [Tue, 1 Oct 2013 23:46:37 +0000 (16:46 -0700)]
target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size

This patch resets se_cmd->data_length for COMPARE_AND_WRITE emulation
within sbc_compare_and_write() to NoLB * block_size in order to address
a bug with FILEIO backends where a I/O failure will occur when data_length
does not match the I/O size being actually dispatched for the individual
per block READs + WRITEs.

This is done late enough in sbc_compare_and_write() after the memory
allocations have occured in transport_generic_new_cmd() to not cause
any unwanted side-effects.

Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Tested-by: Thomas Glanzmann <thomas@glanzmann.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agoib_srpt: always set response for task management
Jack Wang [Mon, 30 Sep 2013 08:09:05 +0000 (10:09 +0200)]
ib_srpt: always set response for task management

The SRP specification requires:

  "Response data shall be provided in any SRP_RSP response that is sent in
   response to an SRP_TSK_MGMT request (see 6.7). The information in the
   RSP_CODE field (see table 24) shall indicate the completion status of
   the task management function."

So fix this to avoid the SRP initiator interprets task management functions
that succeeded as failed.

Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Cc: stable@vger.kernel.org # 3.3+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure
Nicholas Bellinger [Mon, 23 Sep 2013 18:57:38 +0000 (11:57 -0700)]
target: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure

This patch changes transport_alloc_session_tags() to fall back to
use vzalloc when kzalloc fails for big tag_num that end up generating
larger order allocations.

Also use is_vmalloc_addr() in transport_alloc_session_tags() failure
path, and normal transport_free_session() path to determine when
vfree() needs to be called instead of kfree().

v2 changes:
  - Use  __GFP_NOWARN | __GFP_REPEAT for sess_cmd_map kzalloc (mst)

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Asias He <asias@redhat.com>
Cc: Kent Overstreet <kmo@daterainc.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agovhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag
Nicholas Bellinger [Mon, 23 Sep 2013 18:42:28 +0000 (11:42 -0700)]
vhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag

Fix GFP_KERNEL -> GFP_ATOMIC usage of percpu_ida_alloc() within
vhost_scsi_get_tag(), as this code is expected to be called directly
from interrupt context.

v2 changes:

  - Handle possible tag < 0 failure with GFP_ATOMIC

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Asias He <asias@redhat.com>
Cc: Kent Overstreet <kmo@daterainc.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agoib_srpt: Destroy cm_id before destroying QP.
Nicholas Bellinger [Wed, 18 Sep 2013 19:48:27 +0000 (12:48 -0700)]
ib_srpt: Destroy cm_id before destroying QP.

This patch fixes a bug where ib_destroy_cm_id() was incorrectly being called
after srpt_destroy_ch_ib() had destroyed the active QP.

This would result in the following failed SRP_LOGIN_REQ messages:

Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff1762bd, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c903009f8f41)
Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff1758f9, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 2 (guid=0xfe80000000000000:0x2c903009f8f42)
Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff175941, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 2 (guid=0xfe80000000000000:0x2c90300a3cfb2)
Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff176299, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c90300a3cfb1)
mlx4_core 0000:84:00.0: command 0x19 failed: fw status = 0x9
rejected SRP_LOGIN_REQ because creating a new RDMA channel failed.
Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff176299, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c90300a3cfb1)
mlx4_core 0000:84:00.0: command 0x19 failed: fw status = 0x9
rejected SRP_LOGIN_REQ because creating a new RDMA channel failed.
Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff176299, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c90300a3cfb1)

Reported-by: Navin Ahuja <navin.ahuja@saratoga-speed.com>
Cc: stable@vger.kernel.org # 3.3+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotarget: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02
Nicholas Bellinger [Wed, 18 Sep 2013 19:33:42 +0000 (12:33 -0700)]
target: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02

This patch fixes up an incorrect assignment for xop->dbl within
target_xcopy_parse_segdesc_02() code, as reported by Coverity here:

http://marc.info/?l=linux-kernel&m=137936416618490&w=2

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agoLinux 3.12-rc3
Linus Torvalds [Sun, 29 Sep 2013 22:02:38 +0000 (15:02 -0700)]
Linux 3.12-rc3

11 years agoMerge tag 'usb-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 29 Sep 2013 20:47:35 +0000 (13:47 -0700)]
Merge tag 'usb-3.12-rc3' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of USB driver fixes for 3.12-rc3.

  These are all for host controller issues that have been reported, and
  there's a fix for an annoying error message that gets printed every
  time you remove a USB 3 device from the system that's been bugging me
  for a while"

* tag 'usb-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: dwc3: add support for Merrifield
  USB: fsl/ehci: fix failure of checking PHY_CLK_VALID during reinitialization
  USB: Fix breakage in ffs_fs_mount()
  fsl/usb: Resolve PHY_CLK_VLD instability issue for ULPI phy
  usb/core/devio.c: Don't reject control message to endpoint with wrong direction bit
  usb: chipidea: USB_CHIPIDEA should depend on HAS_DMA
  usb: chipidea: udc: free pending TD at removal procedure
  usb: chipidea: imx: Add usb_phy_shutdown at probe's error path
  usb: chipidea: Fix memleak for ci->hw_bank.regmap when removal
  usb: chipidea: udc: fix the oops after rmmod gadget
  USB: fix PM config symbol in uhci-hcd, ehci-hcd, and xhci-hcd
  USB: OHCI: accept very late isochronous URBs
  USB: UHCI: accept very late isochronous URBs
  USB: iMX21: accept very late isochronous URBs
  usbcore: check usb device's state before sending a Set SEL control transfer
  xhci: Fix race between ep halt and URB cancellation
  usb: Fix xHCI host issues on remote wakeup.
  xhci: Ensure a command structure points to the correct trb on the command ring
  xhci: Fix oops happening after address device timeout

11 years agoMerge tag 'tty-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 29 Sep 2013 20:47:00 +0000 (13:47 -0700)]
Merge tag 'tty-3.12-rc3' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some serial at tty driver fixes for 3.12-rc3

  The serial driver fixes some kref leaks, documentation is moved to the
  proper places, and the tty and n_tty fixes resolve some reported
  regressions.  There is still one outstanding tty regression fix that
  isn't in here yet, as I want to test it out some more, it will be sent
  for 3.12-rc4 if it checks out"

* tag 'tty-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: ar933x_uart: move devicetree binding documentation
  tty: Fix SIGTTOU not sent with tcflush()
  n_tty: Fix EOF push index when termios changes
  serial: pch_uart: remove unnecessary tty_port_tty_get
  serial: pch_uart: fix tty-kref leak in dma-rx path
  serial: pch_uart: fix tty-kref leak in rx-error path
  serial: tegra: fix tty-kref leak

11 years agoMerge tag 'staging-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 29 Sep 2013 20:46:18 +0000 (13:46 -0700)]
Merge tag 'staging-3.12-rc3' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are some staging driver fixes, MAINTAINER updates, and a new
  device id.  All of these have been in the linux-next tree, and are
  pretty simple patches"

* tag 'staging-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: r8188eu: Add new device ID
  staging: imx-drm: Fix probe failure
  staging: vt6656: [BUG] iwctl_siwencodeext return if device not open
  staging: vt6656: [BUG] main_usb.c oops on device_close move flag earlier.
  staging: vt6656: rxtx.c [BUG] s_vGetFreeContext dead lock on null apTD.
  Staging: rtl8192u: r819xU_cmdpkt: checking NULL value after doing dev_alloc_skb
  staging: usbip: Orphan usbip
  staging: r8188eu: Add files for new drive: Cocci spatch "noderef"
  staging: r8188eu: Cocci spatch "noderef"
  staging: octeon-usb: Cocci spatch "noderef"
  staging: r8188eu: Add files for new drive: Cocci spatch "noderef"
  MAINTAINERS: staging: dgnc and dgap drivers: add maintainer
  staging: lustre: Cocci spatch "noderef"

11 years agoMerge tag 'driver-core-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 29 Sep 2013 20:45:23 +0000 (13:45 -0700)]
Merge tag 'driver-core-3.12-rc3' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core / sysfs fixes from Greg KH:
 "Here are 2 fixes for 3.12-rc3.  One fixes a sysfs problem with
  mounting caused by 3.12-rc1, and the other is a bug reported by the
  chromeos developers with the driver core.

  Both have been in linux-next for a bit"

* tag 'driver-core-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core : Fix use after free of dev->parent in device_shutdown
  sysfs: Allow mounting without CONFIG_NET

11 years agoMerge tag 'char-misc-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 29 Sep 2013 20:44:48 +0000 (13:44 -0700)]
Merge tag 'char-misc-3.12-rc3' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some HyperV and MEI driver fixes for 3.12-rc3.  They resolve
  some issues that people have been reporting for them"

* tag 'char-misc-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Drivers: hv: vmbus: Terminate vmbus version negotiation on timeout
  Drivers: hv: util: Correctly support ws2008R2 and earlier
  mei: cancel stall timers in mei_reset
  mei: bus: stop wait for read during cl state transition
  mei: make me client counters less error prone

11 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 29 Sep 2013 17:04:03 +0000 (10:04 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf revert from Ingo Molnar:
 "This fixes the 'perf top' regression Markus Trippelsdorf reported"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "perf symbols: Demangle cloned functions"

11 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sun, 29 Sep 2013 17:02:40 +0000 (10:02 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Nothing too major, radeon still has some dpm changes for off by
  default.

  Radeon, intel, msm:
   - radeon: a few more dpm fixes (still off by default), uvd fixes
   - i915: runtime warn backtrace and regression fix
   - msm: iommu changes fallout"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (27 commits)
  drm/msm: use drm_gem_dumb_destroy helper
  drm/msm: deal with mach/iommu.h removal
  drm/msm: Remove iommu include from mdp4_kms.c
  drm/msm: Odd PTR_ERR usage
  drm/i915: Fix up usage of SHRINK_STOP
  drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
  drm/i915: preserve pipe A quirk in i9xx_set_pipeconf
  drm/i915/tv: clear adjusted_mode.flags
  drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER
  drm/radeon/cik: fix overflow in vram fetch
  drm/radeon: add missing hdmi callbacks for rv6xx
  drm/i915: Use a temporary va_list for two-pass string handling
  drm/radeon/uvd: lower msg&fb buffer requirements on UVD3
  drm/radeon: disable tests/benchmarks if accel is disabled
  drm/radeon: don't set default clocks for SI when DPM is disabled
  drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm: fetch the max clk from voltage dep tables helper
  ...

11 years agoRevert "perf symbols: Demangle cloned functions"
Ingo Molnar [Sun, 29 Sep 2013 14:12:54 +0000 (16:12 +0200)]
Revert "perf symbols: Demangle cloned functions"

This reverts commit de95ab53645a2f0015e0f68ee723f18dce2b8b51.

Markus Trippelsdorf reported that this commit broke 'perf top':

 > I just see a gray screen with no text at all. Sometimes the
 > following error messages are printed:
 >
 >  *** Error in `perf': invalid fastbin entry (free): 0x00000000029b18c0
 >  ***
 >  *** Error in `perf': malloc(): memory corruption (fast): 0x0000000000ee0b10 ***

While this code is fixable, the commit itself fails on several levels:

 - it should have been a separate helper function
 - why the heck does it do strchr() twice
 - it casts a const char * over into char *
 - sloppy style
 - it's not even a regression fix!

So lets revert it and re-try the patch in v3.13.

Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoMerge branch 'msm-fixes-3.12-rc2' of git://people.freedesktop.org/~robclark/linux...
Dave Airlie [Sun, 29 Sep 2013 00:06:28 +0000 (10:06 +1000)]
Merge branch 'msm-fixes-3.12-rc2' of git://people.freedesktop.org/~robclark/linux into drm-fixes

A small fix + deal with fallout of iommu changes + use new
drm_gem_dumb_destroy helper.

* 'msm-fixes-3.12-rc2' of git://people.freedesktop.org/~robclark/linux:
  drm/msm: use drm_gem_dumb_destroy helper
  drm/msm: deal with mach/iommu.h removal
  drm/msm: Remove iommu include from mdp4_kms.c
  drm/msm: Odd PTR_ERR usage

11 years agoMerge branches 'sched-urgent-for-linus', 'timers-urgent-for-linus' and 'x86-urgent...
Linus Torvalds [Sat, 28 Sep 2013 21:22:17 +0000 (14:22 -0700)]
Merge branches 'sched-urgent-for-linus', 'timers-urgent-for-linus' and 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler, timer and x86 fixes from Ingo Molnar:
 - A context tracking ARM build and functional fix
 - A handful of ARM clocksource/clockevent driver fixes
 - An AMD microcode patch level sysfs reporting fixlet

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  arm: Fix build error with context tracking calls

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast
  clocksource: of: Respect device tree node status
  clocksource: exynos_mct: Set IRQ affinity when the CPU goes online
  arm: clocksource: mvebu: Use the main timer as clock source from DT

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/AMD: Fix patch level reporting for family 15h

11 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 28 Sep 2013 21:21:13 +0000 (14:21 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "A couple of tooling fixlets and a PMU detection printout fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86: Fix PMU detection printout when no PMU is detected
  perf symbols: Demangle cloned functions
  perf machine: Fix path unpopulated in machine__create_modules()
  perf tools: Explicitly add libdl dependency
  perf probe: Fix probing symbols with optimization suffix
  perf trace: Add mmap2 handler
  perf kmem: Make it work again on non NUMA machines

11 years agoMerge tag 'xfs-for-linus-v3.12-rc3' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Sat, 28 Sep 2013 20:52:05 +0000 (13:52 -0700)]
Merge tag 'xfs-for-linus-v3.12-rc3' of git://oss.sgi.com/xfs/xfs

Pull xfs bugfixes from Ben Myers:
 - fix for directory node collapse regression
 - fix for recovery over stale on disk structures
 - fix for eofblocks ioctl
 - fix asserts in xfs_inode_free
 - lock the ail before removing an item from it

* tag 'xfs-for-linus-v3.12-rc3' of git://oss.sgi.com/xfs/xfs:
  xfs: fix node forward in xfs_node_toosmall
  xfs: log recovery lsn ordering needs uuid check
  xfs: fix XFS_IOC_FREE_EOFBLOCKS definition
  xfs: asserting lock not held during freeing not valid
  xfs: lock the AIL before removing the buffer item

11 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 28 Sep 2013 20:44:09 +0000 (13:44 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Some driver bugfixes for the I2C subsystem"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: ismt: initialize DMA buffer
  i2c: designware: 10-bit addressing mode enabling if I2C_DYNAMIC_TAR_UPDATE is set
  i2c: mv64xxx: Do not use writel_relaxed()
  i2c: mv64xxx: Fix some build warnings
  i2c: s3c2410: fix clk_disable/clk_unprepare WARNings

11 years agoMerge tag 'pm+acpi-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 28 Sep 2013 20:27:31 +0000 (13:27 -0700)]
Merge tag 'pm+acpi-3.12-rc3' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These fix one recent cpufreq regression, a few older bugs that may
  harm users and a kerneldoc typo.

  Specifics:

   1) After the recent locking changes in the cpufreq core it is
      possible to trigger BUG_ON(!policy) in lock_policy_rwsem_read() if
      cpufreq_get() is called before registering a cpufreq driver.  Fix
      from Viresh Kumar.

   2) If intel_pstate has been loaded already, it doesn't make sense to
      do anything in acpi_cpufreq_init() and moreover doing something in
      there in that case may be harmful, so make that function return
      immediately if another cpufreq driver is already present.  From
      Yinghai Lu.

   3) The ACPI IPMI driver sometimes attempts to acquire a mutex from
      interrupt context, which can be avoided by replacing that mutex
      with a spinlock.  From Lv Zheng.

   4) A NULL pointer may be dereferenced by the exynos5440 cpufreq
      driver if a memory allocation made by it fails.  Fix from Sachin
      Kamat.

   5) Hanjun Guo's commit fixes a typo in the kerneldoc comment
      documenting acpi_bus_unregister_driver()"

* tag 'pm+acpi-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / scan: fix typo in comments of acpi_bus_unregister_driver()
  cpufreq: exynos5440: Fix potential NULL pointer dereference
  cpufreq: check cpufreq driver is valid and cpufreq isn't disabled in cpufreq_get()
  acpi-cpufreq: skip loading acpi_cpufreq after intel_pstate
  ACPI / IPMI: Fix atomic context requirement of ipmi_msg_handler()

11 years agoPCI: Workaround missing pci_set_master in pci drivers
Yinghai Lu [Sat, 28 Sep 2013 20:13:07 +0000 (13:13 -0700)]
PCI: Workaround missing pci_set_master in pci drivers

Ben Herrenschmidt found that commit 928bea964827 ("PCI: Delay enabling
bridges until they're needed") breaks PCI in some powerpc environments.

The reason is that the PCIe port driver will call pci_enable_device() on
the bridge, so the device is enabled, but skips pci_set_master because
pcie_port_auto and no acpi on powerpc.

Because of that, pci_enable_bridge() later on (called as a result of the
child device driver doing pci_enable_device) will see the bridge as
already enabled and will not call pci_set_master() on it.

Fixed by add checking in pci_enable_bridge, and call pci_set_master
if driver skip that.

That will make the code more robot and wade off problem for missing
pci_set_master in drivers.

Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge branch 'lockref' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Sat, 28 Sep 2013 19:36:19 +0000 (12:36 -0700)]
Merge branch 'lockref' of git://git./linux/kernel/git/s390/linux

Pull s390 lockref enablement from Heiko Carstens:
 "Enabling the new lockless lockref variant on s390 would have been
  trivial until Tony Luck added a cpu_relax() call into the
  CMPXCHG_LOOP(), with commit d472d9d98b46 ("lockref: Relax in cmpxchg
  loop")

  As already mentioned cpu_relax() is very expensive on s390 since it
  yields() the current virtual cpu.  So we are talking of several
  thousand cycles.  Considering this enabling the lockless lockref
  variant would contradict the intention of the new semantics.  And also
  some quick measurements show performance regressions of 50% and more.

  Simply removing the cpu_relax() call again seems also not very
  desireable since Waiman Long reported that for some workloads the call
  improved performance by 5%."

* 'lockref' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: enable ARCH_USE_CMPXCHG_LOCKREF
  lockref: use arch_mutex_cpu_relax() in CMPXCHG_LOOP()
  mutex: replace CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX with simple ifdef

11 years agokernel/params: fix handling of signed integer types
Jean Delvare [Fri, 27 Sep 2013 20:17:39 +0000 (13:17 -0700)]
kernel/params: fix handling of signed integer types

Commit 6072ddc8520b ("kernel: replace strict_strto*() with kstrto*()")
broke the handling of signed integer types, fix it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Reported-by: Christian Kujau <lists@nerdbynature.de>
Tested-by: Christian Kujau <lists@nerdbynature.de>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'devicetree-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/robh...
Linus Torvalds [Sat, 28 Sep 2013 18:57:26 +0000 (11:57 -0700)]
Merge tag 'devicetree-fixes' of git://git./linux/kernel/git/robh/linux

Pull DeviceTree fixes from Rob Herring:
 "Clean-up to fix some warnings for !OF builds and spelling fixes in
  docs:

   - Clean-up openrisc prom.h
   - Fix warnings caused by of_irq.h ifdefs
   - Spelling fix for Synopsys"

* tag 'devicetree-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dts: Fix misspelling of Synopsys
  of: clean-up ifdefs in of_irq.h
  openrisc: clean-up prom.h

11 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Sat, 28 Sep 2013 18:56:34 +0000 (11:56 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "Just a few relatively small ARM fixes found since the last merge
  window, nothing too exciting"

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7837/3: fix Thumb-2 bug in AES assembler code
  ARM: only allow kernel mode neon with AEABI
  ARM: 7839/1: entry: fix tracing of ARM-private syscalls
  ARM: 7836/1: add __get_user_unaligned/__put_user_unaligned

11 years agoi2c: ismt: initialize DMA buffer
James Ralston [Tue, 24 Sep 2013 23:47:55 +0000 (16:47 -0700)]
i2c: ismt: initialize DMA buffer

This patch adds code to initialize the DMA buffer to compensate for
possible hardware data corruption.

Signed-off-by: James Ralston <james.d.ralston@intel.com>
[wsa: changed to use 'sizeof']
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agodrm/msm: use drm_gem_dumb_destroy helper
Rob Clark [Sat, 28 Sep 2013 14:13:04 +0000 (10:13 -0400)]
drm/msm: use drm_gem_dumb_destroy helper

Signed-off-by: Rob Clark <robdclark@gmail.com>
11 years agodrm/msm: deal with mach/iommu.h removal
Rob Clark [Sat, 28 Sep 2013 14:07:06 +0000 (10:07 -0400)]
drm/msm: deal with mach/iommu.h removal

We still need an API exported by msm iommu driver (but not visible in
any public header anymore).  For now, just declare the prototype
ourselves, but when msm iommu driver provides a better option, use that
instead.

Signed-off-by: Rob Clark <robdclark@gmail.com>
11 years agoperf/x86: Fix PMU detection printout when no PMU is detected
Ingo Molnar [Sat, 28 Sep 2013 13:48:48 +0000 (15:48 +0200)]
perf/x86: Fix PMU detection printout when no PMU is detected

Ran into this cryptic PMU bootup log recently:

[    0.124047] Performance Events:
[    0.125000] smpboot: ...

Turns out we print this if no PMU is detected. Fall back to
the right condition so that the following is printed:

[    0.122381] Performance Events: no PMU driver, software events only.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/n/tip-u2fwaUffakjp0qkpRfqljgsn@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agodrm/msm: Remove iommu include from mdp4_kms.c
Joerg Roedel [Wed, 25 Sep 2013 14:49:40 +0000 (16:49 +0200)]
drm/msm: Remove iommu include from mdp4_kms.c

The include file has been removed and the file does not
need it anyway, so remove it. Fixes a compile error.

Signed-off-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
11 years agodrm/msm: Odd PTR_ERR usage
Thomas Meyer [Mon, 16 Sep 2013 21:19:54 +0000 (23:19 +0200)]
drm/msm: Odd PTR_ERR usage

The variable priv->kms is not initialized yet.

Found by "scripts/coccinelle/tests/odd_ptr_err.cocci".
PTR_ERR should access the value just tested by IS_ERR.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
11 years agos390: enable ARCH_USE_CMPXCHG_LOCKREF
Heiko Carstens [Thu, 5 Sep 2013 11:26:17 +0000 (13:26 +0200)]
s390: enable ARCH_USE_CMPXCHG_LOCKREF

Enable ARCH_USE_CMPXCHG_LOCKREF since it shows performance improvements
with Linus' simple stat() test case of up to 50% on a 30 cpu system.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
11 years agolockref: use arch_mutex_cpu_relax() in CMPXCHG_LOOP()
Heiko Carstens [Mon, 23 Sep 2013 10:59:56 +0000 (12:59 +0200)]
lockref: use arch_mutex_cpu_relax() in CMPXCHG_LOOP()

Make use of arch_mutex_cpu_relax() so architectures can override the
default cpu_relax() semantics.
This is especially useful for s390, where cpu_relax() means that we
yield() the current (virtual) cpu and therefore is very expensive,
and would contradict the whole purpose of the lockless cmpxchg loop.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
11 years agomutex: replace CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX with simple ifdef
Heiko Carstens [Sat, 28 Sep 2013 09:23:59 +0000 (11:23 +0200)]
mutex: replace CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX with simple ifdef

Linus suggested to replace

 #ifndef CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX
 #define arch_mutex_cpu_relax() cpu_relax()
 #endif

with just a simple

  #ifndef arch_mutex_cpu_relax
  # define arch_mutex_cpu_relax() cpu_relax()
  #endif

to get rid of CONFIG_HAVE_CPU_RELAX_SIMPLE. So architectures can
simply define arch_mutex_cpu_relax if they want an architecture
specific function instead of having to add a select statement in
their Kconfig in addition.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
11 years agoMerge branch 'context_tracking/fixes' of git://git.kernel.org/pub/scm/linux/kernel...
Ingo Molnar [Sat, 28 Sep 2013 06:50:09 +0000 (08:50 +0200)]
Merge branch 'context_tracking/fixes' of git://git./linux/kernel/git/frederic/linux-dynticks into sched/urgent

Pull context tracking ARM fix from Frederic Weisbecker.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoMerge branch 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Sat, 28 Sep 2013 04:45:30 +0000 (14:45 +1000)]
Merge branch 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

More radeon fixes for 3.12.  Kind of all over the place: UVD, DPM,
tiling, etc.

* 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
  drm/radeon/cik: fix overflow in vram fetch
  drm/radeon: add missing hdmi callbacks for rv6xx
  drm/radeon/uvd: lower msg&fb buffer requirements on UVD3
  drm/radeon: disable tests/benchmarks if accel is disabled
  drm/radeon: don't set default clocks for SI when DPM is disabled
  drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables
  drm/radeon/dpm: fetch the max clk from voltage dep tables helper
  drm/radeon: fix missed variable sized access
  drm/radeon: Make r100_cp_ring_info() and radeon_ring_gfx() safe (v2)
  drm/radeon/cik: Add tiling mode index for 1D tiled depth/stencil surfaces
  drm/radeon/cik: Fix encoding of number of banks in tiling configuration info
  drm/radeon/cik: Fix printing of client name on VM protection fault
  drm/radeon: additional gcc fixes for radeon_atombios.c
  drm/radeon: avoid UVD corruption on AGP cards using GPU gart

11 years agoMerge tag 'drm-intel-fixes-2013-09-26' of git://people.freedesktop.org/~danvet/drm...
Dave Airlie [Fri, 27 Sep 2013 22:46:44 +0000 (08:46 +1000)]
Merge tag 'drm-intel-fixes-2013-09-26' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes

Just a few fixes for regressions and other serious stuff.

Two fix state tracking mismatches, together with an additional patch that
I've submitted to stable (somehow forgotten to tag it) we should have them
fixed now (I hope).

* tag 'drm-intel-fixes-2013-09-26' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: Fix up usage of SHRINK_STOP
  drm/i915: preserve pipe A quirk in i9xx_set_pipeconf
  drm/i915/tv: clear adjusted_mode.flags
  drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER
  drm/i915: Use a temporary va_list for two-pass string handling

11 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Fri, 27 Sep 2013 17:07:47 +0000 (10:07 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fix from Guenter Roeck:
 "Fix potential crash condition in applesmc driver"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (applesmc) Check key count before proceeding

11 years agoMerge tag 'sound-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 27 Sep 2013 16:33:01 +0000 (09:33 -0700)]
Merge tag 'sound-3.12' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Nothing too serious here: a couple of compress-offload core fixes,
  Haswell HDMI audio fix, a fixup for new MacBook Airs and a few COEF
  setups for ALC283 mic problems"

* tag 'sound-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Enable internal mic on a Thinkpad machine with ALC283
  ALSA: hda - Fix Internal Mic boost can't control with ALC283
  ALSA: hda - Add documentation for CS4208 fixups
  ALSA: hda - Add fixup for MacBook Air 6,1 and 6,2 with CS4208 codec
  ALSA : hda - not use assigned converters for all unused pins
  ALSA: compress: Make sure we trigger STOP before closing the stream.
  ALSA: compress: Fix compress device unregister.

11 years agoMerge tag 'fbdev-fixes-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba...
Linus Torvalds [Fri, 27 Sep 2013 16:32:09 +0000 (09:32 -0700)]
Merge tag 'fbdev-fixes-3.12' of git://git./linux/kernel/git/tomba/linux

Pull fbdev fixes from Tomi Valkeinen:
 "Small fbdev fixes for various fb drivers"

* tag 'fbdev-fixes-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  video: mxsfb: Add missing break
  video: of: display_timing: correct display-timings node finding
  neofb: fix error return code in neofb_probe()
  s3fb: fix error return code in s3_pci_probe()
  video: mmp: drop needless devm cleanup
  OMAPDSS: Add missing dependency on backlight for DSI-CM panel drier
  OMAPDSS: DISPC: set irq_safe for runtime PM
  OMAPDSS: Return right error during connector probe

11 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Linus Torvalds [Fri, 27 Sep 2013 16:31:09 +0000 (09:31 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs

Pull reiserfs and UDF fixes from Jan Kara:
 "The contains fix of an UDF oops when mounting corrupted media and a
  fix of a race in reiserfs leading to oops"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  reiserfs: fix race with flush_used_journal_lists and flush_journal_list
  reiserfs: remove useless flush_old_journal_lists
  udf: Fortify LVID loading

11 years agosysfs: Allow mounting without CONFIG_NET
Eric W. Biederman [Mon, 23 Sep 2013 21:41:17 +0000 (14:41 -0700)]
sysfs: Allow mounting without CONFIG_NET

In kobj_ns_current_may_mount the default should be to allow the mount.
The test is only for a single kobj_ns_type at a time, and unless there
is a reason to prevent it the mounting sysfs should be allowed.
Subsystems that are not registered can't have are not involved so can't
have a reason to prevent mounting sysfs.

This is a bug-fix to commit 7dc5dbc879bd ("sysfs: Restrict mounting
sysfs") that came in via the userns tree during the 3.12 merge window.

Reported-and-tested-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agolockref: allow relaxed cmpxchg64 variant for lockless updates
Will Deacon [Thu, 26 Sep 2013 16:27:00 +0000 (17:27 +0100)]
lockref: allow relaxed cmpxchg64 variant for lockless updates

The 64-bit cmpxchg operation on the lockref is ordered by virtue of
hazarding between the cmpxchg operation and the reference count
manipulation. On weakly ordered memory architectures (such as ARM), it
can be of great benefit to omit the barrier instructions where they are
not needed.

This patch moves the lockless lockref code over to a cmpxchg64_relaxed
operation, which doesn't provide barrier semantics. If the operation
isn't defined, we simply #define it as the usual 64-bit cmpxchg macro.

Cc: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoi2c: designware: 10-bit addressing mode enabling if I2C_DYNAMIC_TAR_UPDATE is set
Chew, Chiau Ee [Thu, 26 Sep 2013 18:57:35 +0000 (02:57 +0800)]
i2c: designware: 10-bit addressing mode enabling if I2C_DYNAMIC_TAR_UPDATE is set

According to Designware I2C spec, if I2C_DYNAMIC_TAR_UPDATE is set to 1,
the 10-bit addressing mode is controlled by IC_10BITADDR_MASTER bit of
IC_TAR register instead of IC_CON register. The IC_10BITADDR_MASTER
in IC_CON register becomes read-only copy. Since I2C_DYNAMIC_TAR_UPDATE
value can't be detected from hardware register, so we will always set the
IC_10BITADDR_MASTER bit in both IC_CON and IC_TAR register whenever 10-bit
addresing mode is requested by user application.

Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: mv64xxx: Do not use writel_relaxed()
Thierry Reding [Wed, 18 Sep 2013 12:51:40 +0000 (14:51 +0200)]
i2c: mv64xxx: Do not use writel_relaxed()

The driver is used on PowerPC which don't provide writel_relaxed(). This
breaks the c2k and prpmc2800 default configurations. To fix the build,
turn the calls to writel_relaxed() into writel(). The impacts for ARM
should be minimal.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: mv64xxx: Fix some build warnings
Thierry Reding [Wed, 18 Sep 2013 12:50:52 +0000 (14:50 +0200)]
i2c: mv64xxx: Fix some build warnings

Some functions and variables are only used if the configuration selects
HAVE_CLK. Protect them with a corresponding #ifdef CONFIG_HAVE_CLK block
to avoid compiler warnings.

Signed-off-by: Thierry Reding <treding@nvidia.com>
[wsa: added marker to #endif]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: s3c2410: fix clk_disable/clk_unprepare WARNings
Kim Phillips [Tue, 17 Sep 2013 16:31:53 +0000 (11:31 -0500)]
i2c: s3c2410: fix clk_disable/clk_unprepare WARNings

commit d16933b33914a6dff38a4ecbe8edce44a17898e8 "i2c: s3c2410: Move
location of clk_prepare_enable() call in probe function" refactored
clk_enable and clk_disable calls yet neglected to remove the
clk_disable_unprepare call in the module's remove().

It helps remove warnings on an arndale during unbind:

echo 12c90000.i2c > /sys/bus/platform/devices/12c90000.i2c/driver/unbind

------------[ cut here ]------------
WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:842 clk_disable+0x18/0x24()
Modules linked in:
CPU: 0 PID: 2548 Comm: bash Not tainted 3.11.0-next-20130916-00003-gf4bddbc #6
[<c0014d48>] (unwind_backtrace+0x0/0xf8) from [<c00117d0>] (show_stack+0x10/0x14)
[<c00117d0>] (show_stack+0x10/0x14) from [<c0361be8>] (dump_stack+0x6c/0xac)
[<c0361be8>] (dump_stack+0x6c/0xac) from [<c001d864>] (warn_slowpath_common+0x64/0x88)
[<c001d864>] (warn_slowpath_common+0x64/0x88) from [<c001d8a4>] (warn_slowpath_null+0x1c/0x24)
[<c001d8a4>] (warn_slowpath_null+0x1c/0x24) from [<c02c4a64>] (clk_disable+0x18/0x24)
[<c02c4a64>] (clk_disable+0x18/0x24) from [<c028d0b0>] (s3c24xx_i2c_remove+0x28/0x70)
[<c028d0b0>] (s3c24xx_i2c_remove+0x28/0x70) from [<c0217a10>] (platform_drv_remove+0x18/0x1c)
[<c0217a10>] (platform_drv_remove+0x18/0x1c) from [<c0216358>] (__device_release_driver+0x58/0xb4)
[<c0216358>] (__device_release_driver+0x58/0xb4) from [<c02163d0>] (device_release_driver+0x1c/0x28)
[<c02163d0>] (device_release_driver+0x1c/0x28) from [<c02153c0>] (unbind_store+0x58/0x90)
[<c02153c0>] (unbind_store+0x58/0x90) from [<c0214c90>] (drv_attr_store+0x20/0x2c)
[<c0214c90>] (drv_attr_store+0x20/0x2c) from [<c01032c0>] (sysfs_write_file+0x168/0x198)
[<c01032c0>] (sysfs_write_file+0x168/0x198) from [<c00ae1c0>] (vfs_write+0xb0/0x194)
[<c00ae1c0>] (vfs_write+0xb0/0x194) from [<c00ae594>] (SyS_write+0x3c/0x70)
[<c00ae594>] (SyS_write+0x3c/0x70) from [<c000e3e0>] (ret_fast_syscall+0x0/0x30)
---[ end trace 4c9f9403066f57a6 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:751 clk_unprepare+0x14/0x1c()
Modules linked in:
CPU: 0 PID: 2548 Comm: bash Tainted: G        W    3.11.0-next-20130916-00003-gf4bddbc #6
[<c0014d48>] (unwind_backtrace+0x0/0xf8) from [<c00117d0>] (show_stack+0x10/0x14)
[<c00117d0>] (show_stack+0x10/0x14) from [<c0361be8>] (dump_stack+0x6c/0xac)
[<c0361be8>] (dump_stack+0x6c/0xac) from [<c001d864>] (warn_slowpath_common+0x64/0x88)
[<c001d864>] (warn_slowpath_common+0x64/0x88) from [<c001d8a4>] (warn_slowpath_null+0x1c/0x24)
[<c001d8a4>] (warn_slowpath_null+0x1c/0x24) from [<c02c5834>] (clk_unprepare+0x14/0x1c)
[<c02c5834>] (clk_unprepare+0x14/0x1c) from [<c028d0b8>] (s3c24xx_i2c_remove+0x30/0x70)
[<c028d0b8>] (s3c24xx_i2c_remove+0x30/0x70) from [<c0217a10>] (platform_drv_remove+0x18/0x1c)
[<c0217a10>] (platform_drv_remove+0x18/0x1c) from [<c0216358>] (__device_release_driver+0x58/0xb4)
[<c0216358>] (__device_release_driver+0x58/0xb4) from [<c02163d0>] (device_release_driver+0x1c/0x28)
[<c02163d0>] (device_release_driver+0x1c/0x28) from [<c02153c0>] (unbind_store+0x58/0x90)
[<c02153c0>] (unbind_store+0x58/0x90) from [<c0214c90>] (drv_attr_store+0x20/0x2c)
[<c0214c90>] (drv_attr_store+0x20/0x2c) from [<c01032c0>] (sysfs_write_file+0x168/0x198)
[<c01032c0>] (sysfs_write_file+0x168/0x198) from [<c00ae1c0>] (vfs_write+0xb0/0x194)
[<c00ae1c0>] (vfs_write+0xb0/0x194) from [<c00ae594>] (SyS_write+0x3c/0x70)
[<c00ae594>] (SyS_write+0x3c/0x70) from [<c000e3e0>] (ret_fast_syscall+0x0/0x30)
---[ end trace 4c9f9403066f57a7 ]---

Signed-off-by: Kim Phillips <kim.phillips@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoarm: Fix build error with context tracking calls
Frederic Weisbecker [Mon, 9 Sep 2013 22:54:17 +0000 (00:54 +0200)]
arm: Fix build error with context tracking calls

ad65782fba50 (context_tracking: Optimize main APIs off case
with static key) converted context tracking main APIs to inline
function and left ARM asm callers behind.

This can be easily fixed by making ARM calling the post static
keys context tracking function. We just need to replicate the
static key checks there. We'll remove these later when ARM will
support the context tracking static keys.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Anil Kumar <anilk4.v@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kevin Hilman <khilman@linaro.org>
11 years agoALSA: hda - Enable internal mic on a Thinkpad machine with ALC283
Kailang Yang [Fri, 27 Sep 2013 11:10:25 +0000 (13:10 +0200)]
ALSA: hda - Enable internal mic on a Thinkpad machine with ALC283

More thorough testing showed that these verbs were necessary to
improve quality of the internal mic. Patch originally from Realtek.

BugLink: https://bugs.launchpad.net/bugs/1231931
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoALSA: hda - Fix Internal Mic boost can't control with ALC283
Kailang Yang [Fri, 27 Sep 2013 12:02:28 +0000 (14:02 +0200)]
ALSA: hda - Fix Internal Mic boost can't control with ALC283

ALC283 pin control for Line1 default control by hidden register.
Use line1 as internal Mic will not get sound when boost value up.
Set control by verb for hidden register will solve this issue.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoALSA: hda - Add documentation for CS4208 fixups
Takashi Iwai [Fri, 27 Sep 2013 08:19:31 +0000 (10:19 +0200)]
ALSA: hda - Add documentation for CS4208 fixups

Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoALSA: hda - Add fixup for MacBook Air 6,1 and 6,2 with CS4208 codec
Ben Whitten [Fri, 27 Sep 2013 08:13:51 +0000 (10:13 +0200)]
ALSA: hda - Add fixup for MacBook Air 6,1 and 6,2 with CS4208 codec

This patch adds the default pin configuration and some init verbs for
setting COEFs, in addition to the correction of input pin AMP caps
for MacBook Air 6,1 and 6,2.  With these changes, the headphone jack
detection starts working properly.

[trivial space fixes by tiwai]

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60811
Signed-off-by: Ben Whitten <benwhitten@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agox86/microcode/AMD: Fix patch level reporting for family 15h
Suravee Suthikulpanit [Thu, 30 Sep 2010 00:27:12 +0000 (19:27 -0500)]
x86/microcode/AMD: Fix patch level reporting for family 15h

On AMD family 14h, applying microcode patch on the a core (core0)
would also affect the other core (core1) in the same compute
unit. The driver would skip applying the patch on core1, but it
still need to update kernel structures to reflect the proper
patch level.

The current logic is not updating the struct
ucode_cpu_info.cpu_sig.rev of the skipped core. This causes the
/sys/devices/system/cpu/cpu1/microcode/version to report
incorrect patch level as shown below:

  $ grep . cpu?/microcode/version
  cpu0/microcode/version:0x600063d
  cpu1/microcode/version:0x6000626
  cpu2/microcode/version:0x600063d
  cpu3/microcode/version:0x6000626
  cpu4/microcode/version:0x600063d

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: <bp@alien8.de>
Cc: <jacob.w.shin@gmail.com>
Cc: <herrmann.der.user@googlemail.com>
Link: http://lkml.kernel.org/r/1285806432-1995-1-git-send-email-suravee.suthikulpanit@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoMerge branch 'pm-cpufreq-fixes'
Rafael J. Wysocki [Fri, 27 Sep 2013 00:45:36 +0000 (02:45 +0200)]
Merge branch 'pm-cpufreq-fixes'

* pm-cpufreq-fixes:
  cpufreq: exynos5440: Fix potential NULL pointer dereference
  cpufreq: check cpufreq driver is valid and cpufreq isn't disabled in cpufreq_get()
  acpi-cpufreq: skip loading acpi_cpufreq after intel_pstate

11 years agoMerge branch 'acpi-fixes'
Rafael J. Wysocki [Fri, 27 Sep 2013 00:45:10 +0000 (02:45 +0200)]
Merge branch 'acpi-fixes'

* acpi-fixes:
  ACPI / scan: fix typo in comments of acpi_bus_unregister_driver()
  ACPI / IPMI: Fix atomic context requirement of ipmi_msg_handler()

11 years agostaging: r8188eu: Add new device ID
Larry Finger [Thu, 26 Sep 2013 18:07:31 +0000 (13:07 -0500)]
staging: r8188eu: Add new device ID

The DLink DWA-125 Rev D1 also uses this driver.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-by: Sergey Kostanbaev <sergey.kostanbaev@gmail.com>
Tested-by: Sergey Kostanbaev <sergey.kostanbaev@gmail.com>
Cc: Sergey Kostanbaev <sergey.kostanbaev@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agousb: dwc3: add support for Merrifield
David Cohen [Thu, 26 Sep 2013 20:01:44 +0000 (13:01 -0700)]
usb: dwc3: add support for Merrifield

Add PCI id for Intel Merrifield

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoUSB: fsl/ehci: fix failure of checking PHY_CLK_VALID during reinitialization
Shengzhou Liu [Mon, 2 Sep 2013 05:25:52 +0000 (13:25 +0800)]
USB: fsl/ehci: fix failure of checking PHY_CLK_VALID during reinitialization

In case of usb phy reinitialization:
e.g. insmod usb-module(usb works well) -> rmmod usb-module -> insmod usb-module
It found the PHY_CLK_VALID bit didn't work if it's not with the power-on reset.
So we just check PHY_CLK_VALID bit during the stage with POR, this can be met
by the tricky of checking FSL_SOC_USB_PRICTRL register.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoUSB: Fix breakage in ffs_fs_mount()
Al Viro [Fri, 20 Sep 2013 16:14:21 +0000 (17:14 +0100)]
USB: Fix breakage in ffs_fs_mount()

There's a bunch of failure exits in ffs_fs_mount() with
seriously broken recovery logics.  Most of that appears to stem
from misunderstanding of the ->kill_sb() semantics; unlike
->put_super() it is called for *all* superblocks of given type,
no matter how (in)complete the setup had been.  ->put_super()
is called only if ->s_root is not NULL; any failure prior to
setting ->s_root will have the call of ->put_super() skipped.
->kill_sb(), OTOH, awaits every superblock that has come from
sget().

Current behaviour of ffs_fs_mount():

We have struct ffs_sb_fill_data data on stack there.  We do
ffs_dev = functionfs_acquire_dev_callback(dev_name);
and store that in data.private_data.  Then we call mount_nodev(),
passing it ffs_sb_fill() as a callback.  That will either fail
outright, or manage to call ffs_sb_fill().  There we allocate an
instance of struct ffs_data, slap the value of ffs_dev (picked
from data.private_data) into ffs->private_data and overwrite
data.private_data by storing ffs into an overlapping member
(data.ffs_data).  Then we store ffs into sb->s_fs_info and attempt
to set the rest of the things up (root inode, root dentry, then
create /ep0 there).  Any of those might fail.  Should that
happen, we get ffs_fs_kill_sb() called before mount_nodev()
returns.  If mount_nodev() fails for any reason whatsoever,
we proceed to
functionfs_release_dev_callback(data.ffs_data);

That's broken in a lot of ways.  Suppose the thing has failed in
allocation of e.g. root inode or dentry.  We have
functionfs_release_dev_callback(ffs);
ffs_data_put(ffs);
done by ffs_fs_kill_sb() (ffs accessed via sb->s_fs_info), followed by
functionfs_release_dev_callback(ffs);
from ffs_fs_mount() (via data.ffs_data).  Note that the second
functionfs_release_dev_callback() has every chance to be done to freed memory.

Suppose we fail *before* root inode allocation.  What happens then?
ffs_fs_kill_sb() doesn't do anything to ffs (it's either not called at all,
or it doesn't have a pointer to ffs stored in sb->s_fs_info).  And
functionfs_release_dev_callback(data.ffs_data);
is called by ffs_fs_mount(), but here we are in nasal daemon country - we
are reading from a member of union we'd never stored into.  In practice,
we'll get what we used to store into the overlapping field, i.e. ffs_dev.
And then we get screwed, since we treat it (struct gfs_ffs_obj * in
disguise, returned by functionfs_acquire_dev_callback()) as struct
ffs_data *, pick what would've been ffs_data ->private_data from it
(*well* past the actual end of the struct gfs_ffs_obj - struct ffs_data
is much bigger) and poke in whatever it points to.

FWIW, there's a minor leak on top of all that in case if ffs_sb_fill()
fails on kstrdup() - ffs is obviously forgotten.

The thing is, there is no point in playing all those games with union.
Just allocate and initialize ffs_data *before* calling mount_nodev() and
pass a pointer to it via data.ffs_data.  And once it's stored in
sb->s_fs_info, clear data.ffs_data, so that ffs_fs_mount() knows that
it doesn't need to kill the sucker manually - from that point on
we'll have it done by ->kill_sb().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: stable <stable@vger.kernel.org> # 3.3+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agodriver core : Fix use after free of dev->parent in device_shutdown
Benson Leung [Wed, 25 Sep 2013 03:05:11 +0000 (20:05 -0700)]
driver core : Fix use after free of dev->parent in device_shutdown

The put_device(dev) at the bottom of the loop of device_shutdown
may result in the dev being cleaned up. In device_create_release,
the dev is kfreed.

However, device_shutdown attempts to use the dev pointer again after
put_device by referring to dev->parent.

Copy the parent pointer instead to avoid this condition.

This bug was found on Chromium OS's chromeos-3.8, which is based on v3.8.11.
See bug report : https://code.google.com/p/chromium/issues/detail?id=297842
This can easily be reproduced when shutting down with
hidraw devices that report battery condition.
Two examples are the HP Bluetooth Mouse X4000b and the Apple Magic Mouse.
For example, with the magic mouse :
The dev in question is "hidraw0"
dev->parent is "magicmouse"

In the course of the shutdown for this device, the input event cleanup calls
a put on hidraw0, decrementing its reference count.
When we finally get to put_device(dev) in device_shutdown, kobject_cleanup
is called and device_create_release does kfree(dev).
dev->parent is no longer valid, and we may crash in
put_device(dev->parent).

This change should be applied on any kernel with this change :
d1c6c030fcec6f860d9bb6c632a3ebe62e28440b

Cc: stable@vger.kernel.org
Signed-off-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agosysfs: Allow mounting without CONFIG_NET
Eric W. Biederman [Mon, 23 Sep 2013 21:41:17 +0000 (14:41 -0700)]
sysfs: Allow mounting without CONFIG_NET

In kobj_ns_current_may_mount the default should be to allow the
mount.  The test is only for a single kobj_ns_type at a time, and unless
there is a reason to prevent it the mounting sysfs should be allowed.
Subsystems that are not registered can't have are not involved so can't
have a reason to prevent mounting sysfs.

This is a bug-fix to:
    commit 7dc5dbc879bd0779924b5132a48b731a0bc04a1e
    Author: Eric W. Biederman <ebiederm@xmission.com>
    Date:   Mon Mar 25 20:07:01 2013 -0700

        sysfs: Restrict mounting sysfs

        Don't allow mounting sysfs unless the caller has CAP_SYS_ADMIN rights
        over the net namespace.  The principle here is if you create or have
        capabilities over it you can mount it, otherwise you get to live with
        what other people have mounted.

        Instead of testing this with a straight forward ns_capable call,
        perform this check the long and torturous way with kobject helpers,
        this keeps direct knowledge of namespaces out of sysfs, and preserves
        the existing sysfs abstractions.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
That came in via the userns tree during the 3.12 merge window.

Reported-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoDrivers: hv: vmbus: Terminate vmbus version negotiation on timeout
K. Y. Srinivasan [Wed, 4 Sep 2013 22:41:58 +0000 (15:41 -0700)]
Drivers: hv: vmbus: Terminate vmbus version negotiation on timeout

commit 666b9adc801ef012612c4e43e0f44b2cdc1979cf terminated vmbus
version negotiation incorrectly. We need to terminate the version
negotiation only if the current negotiation were to timeout.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: Olaf Hering <ohering@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoDrivers: hv: util: Correctly support ws2008R2 and earlier
K. Y. Srinivasan [Fri, 6 Sep 2013 18:49:56 +0000 (11:49 -0700)]
Drivers: hv: util: Correctly support ws2008R2 and earlier

The current code does not correctly negotiate the version numbers for the util
driver when hosted on earlier hosts. The version numbers presented by this
driver were not compatible with the version numbers supported by Windows Server
2008. Fix this problem.

I would like to thank Olaf Hering (ohering@suse.com) for identifying the problem.

Reported-by: Olaf Hering <ohering@suse.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agomei: cancel stall timers in mei_reset
Alexander Usyskin [Mon, 2 Sep 2013 10:29:47 +0000 (13:29 +0300)]
mei: cancel stall timers in mei_reset

Unset init_clients_timer and amthif_stall_timers
in mei_reset in order to cancel timer ticking and hence
avoid recursive reset calls.

Cc: <stable@vger.kernel.org> # 3.9+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agomei: bus: stop wait for read during cl state transition
Tomas Winkler [Mon, 2 Sep 2013 10:29:46 +0000 (13:29 +0300)]
mei: bus: stop wait for read during cl state transition

Bus layer omitted check for client state transition while waiting
for read completion
The client state transition may occur for example as result
of firmware initiated reset

Add mei_cl_is_transitioning wrapper to reduce the code
repetition.:

Cc: <stable@vger.kernel.org> # 3.9+
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agomei: make me client counters less error prone
Tomas Winkler [Mon, 2 Sep 2013 10:29:45 +0000 (13:29 +0300)]
mei: make me client counters less error prone

1. u8 counters are prone to hard to detect overflow:
 make them unsigned long to match bit_ functions argument type

2. don't check me_clients_num for negativity, it is unsigned.

3. init all the me client counters from one place

Cc: <stable@vger.kernel.org> # 3.9+
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: ar933x_uart: move devicetree binding documentation
Gabor Juhos [Sat, 31 Aug 2013 07:15:44 +0000 (09:15 +0200)]
tty: ar933x_uart: move devicetree binding documentation

Commit 'tty: ar933x_uart: add device tree support
and binding documentation' introduced a new doc in
bindins/tty/serial.

According to a recent thread [1] on the linux-serial
list, the binding documentation of serial drivers
should be added into bindings/serial.

Move the documentation of qca,ar9330-uart to the
correct place.

  1. http://marc.info/?l=linux-serial&m=137771295411517

Cc: devicetree@vger.kernel.org
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agofsl/usb: Resolve PHY_CLK_VLD instability issue for ULPI phy
Ramneek Mehresh [Mon, 16 Sep 2013 09:41:33 +0000 (15:11 +0530)]
fsl/usb: Resolve PHY_CLK_VLD instability issue for ULPI phy

For controller versions greater than 1.6, setting ULPI_PHY_CLK_SEL
bit when USB_EN bit is already set causes instability issues with
PHY_CLK_VLD bit. So USB_EN is set only for IP controller version
below 1.6 before setting ULPI_PHY_CLK_SEL bit

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoxfs: fix node forward in xfs_node_toosmall
Mark Tinguely [Mon, 23 Sep 2013 17:18:58 +0000 (12:18 -0500)]
xfs: fix node forward in xfs_node_toosmall

Commit f5ea1100 cleans up the disk to host conversions for
node directory entries, but because a variable is reused in
xfs_node_toosmall() the next node is not correctly found.
If the original node is small enough (<= 3/8 of the node size),
this change may incorrectly cause a node collapse when it should
not. That will cause an assert in xfstest generic/319:

   Assertion failed: first <= last && last < BBTOB(bp->b_length),
   file: /root/newest/xfs/fs/xfs/xfs_trans_buf.c, line: 569

Keep the original node header to get the correct forward node.

(When a node is considered for a merge with a sibling, it overwrites the
 sibling pointers of the original incore nodehdr with the sibling's
 pointers.  This leads to loop considering the original node as a merge
 candidate with itself in the second pass, and so it incorrectly
 determines a merge should occur.)

Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
[v3: added Dave Chinner's (slightly modified) suggestion to the commit header,
cleaned up whitespace.  -bpm]

11 years agovideo: mxsfb: Add missing break
Marek Vasut [Thu, 26 Sep 2013 11:13:58 +0000 (13:13 +0200)]
video: mxsfb: Add missing break

Add missing break into the restore function.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
11 years agohwmon: (applesmc) Check key count before proceeding
Henrik Rydberg [Thu, 26 Sep 2013 06:33:16 +0000 (08:33 +0200)]
hwmon: (applesmc) Check key count before proceeding

After reports from Chris and Josh Boyer of a rare crash in applesmc,
Guenter pointed at the initialization problem fixed below. The patch
has not been verified to fix the crash, but should be applied
regardless.

Reported-by: <jwboyer@fedoraproject.org>
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agovideo: of: display_timing: correct display-timings node finding
Andrzej Hajda [Wed, 25 Sep 2013 11:51:31 +0000 (13:51 +0200)]
video: of: display_timing: correct display-timings node finding

of_get_display_timing(s) use of_find_node_by_name
to get child node, this is incorrect, of_get_child_by_name
should be used instead. The patch fixes it.
Small typo is also corrected.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
11 years agoneofb: fix error return code in neofb_probe()
Wei Yongjun [Mon, 23 Sep 2013 15:00:34 +0000 (23:00 +0800)]
neofb: fix error return code in neofb_probe()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
11 years agos3fb: fix error return code in s3_pci_probe()
Wei Yongjun [Mon, 23 Sep 2013 15:00:15 +0000 (23:00 +0800)]
s3fb: fix error return code in s3_pci_probe()

Fix to return -EINVAL when virtual vertical size smaller than real
instead of 0, as done elsewhere in this function. Also remove dup code.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
11 years agovideo: mmp: drop needless devm cleanup
Uwe Kleine-König [Mon, 23 Sep 2013 16:13:10 +0000 (18:13 +0200)]
video: mmp: drop needless devm cleanup

The nice thing about devm_* is that the driver doesn't need to free the
resources but the driver core takes care about that. This also
simplifies the error path quite a bit and removes the wrong check for a
clock pointer being NULL.

Russell King - ARM Linux <linux@arm.linux.org.uk>:
"And this patch also fixes the above: disabling/unpreparing _after_ putting
the thing - which was quite silly... :)"

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
11 years agoOMAPDSS: Add missing dependency on backlight for DSI-CM panel drier
Mark Brown [Wed, 25 Sep 2013 11:31:01 +0000 (12:31 +0100)]
OMAPDSS: Add missing dependency on backlight for DSI-CM panel drier

The DSI-CM driver uses the backlight class so needs to build depend on it.

Signed-off-by: Mark Brown <broonie@linaro.org>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
11 years agoALSA : hda - not use assigned converters for all unused pins
Mengdong Lin [Sun, 22 Sep 2013 00:34:45 +0000 (20:34 -0400)]
ALSA : hda - not use assigned converters for all unused pins

BIOS can mark a pin as "no physical connection" if the port is used by an
integrated display which is not audio capable. And audio driver will overlook
such pins.

On Haswell, such a disconneted pin will keep muted and connected to the 1st
converter by default. But if the 1st convertor is assigned to a connected pin
for audio streaming. The muted disconnected pin can make the connected pin
no sound output.

So this patch avoids using assigned converters for all unused pins for Haswell,
including the disconected pins.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Reviewed-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoALSA: compress: Make sure we trigger STOP before closing the stream.
Liam Girdwood [Fri, 13 Sep 2013 16:43:16 +0000 (17:43 +0100)]
ALSA: compress: Make sure we trigger STOP before closing the stream.

Currently we assume that userspace will shut down the compressed stream
correctly. However, if userspcae dies (e.g. cplay & ctrl-C) we dont
stop the stream before freeing it.

This now checks that the stream is stopped before freeing.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agotty: Fix SIGTTOU not sent with tcflush()
Peter Hurley [Thu, 26 Sep 2013 00:13:04 +0000 (20:13 -0400)]
tty: Fix SIGTTOU not sent with tcflush()

Commit 'e7f3880cd9b98c5bf9391ae7acdec82b75403776'
  tty: Fix recursive deadlock in tty_perform_flush()
introduced a regression where tcflush() does not generate
SIGTTOU for background process groups.

Make sure ioctl(TCFLSH) calls tty_check_change() when
invoked from the line discipline.

Cc: stable@vger.kernel.org # v3.10+
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoclocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast
Magnus Damm [Wed, 18 Sep 2013 20:01:16 +0000 (15:01 -0500)]
clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast

Update the STI driver by setting cpu_possible_mask to make EMEV2
SMP work as expected together with the ARM broadcast timer.

This breakage was introduced by:

f7db706 ARM: 7674/1: smp: Avoid dummy clockevent being preferred over real hardware clock-event

Without this fix SMP operation is broken on EMEV2 since no
broadcast timer interrupts trigger on the secondary CPU cores.

Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
11 years agousb/core/devio.c: Don't reject control message to endpoint with wrong direction bit
Kurt Garloff [Tue, 24 Sep 2013 12:13:48 +0000 (14:13 +0200)]
usb/core/devio.c: Don't reject control message to endpoint with wrong direction bit

Trying to read data from the Pegasus Technologies NoteTaker (0e20:0101)
[1] with the Windows App (EasyNote) works natively but fails when
Windows is running under KVM (and the USB device handed to KVM).

The reason is a USB control message
 usb 4-2.2: control urb: bRequestType=22 bRequest=09 wValue=0200 wIndex=0001 wLength=0008
This goes to endpoint address 0x01 (wIndex); however, endpoint address
0x01 does not exist. There is an endpoint 0x81 though (same number,
but other direction); the app may have meant that endpoint instead.

The kernel thus rejects the IO and thus we see the failure.

Apparently, Linux is more strict here than Windows ... we can't change
the Win app easily, so that's a problem.

It seems that the Win app/driver is buggy here and the driver does not
behave fully according to the USB HID class spec that it claims to
belong to.  The device seems to happily deal with that though (and
seems to not really care about this value much).

So the question is whether the Linux kernel should filter here.
Rejecting has the risk that somewhat non-compliant userspace apps/
drivers (most likely in a virtual machine) are prevented from working.
Not rejecting has the risk of confusing an overly sensitive device with
such a transfer. Given the fact that Windows does not filter it makes
this risk rather small though.

The patch makes the kernel more tolerant: If the endpoint address in
wIndex does not exist, but an endpoint with toggled direction bit does,
it will let the transfer through. (It does NOT change the message.)

With attached patch, the app in Windows in KVM works.
 usb 4-2.2: check_ctrlrecip: process 13073 (qemu-kvm) requesting ep 01 but needs 81

I suspect this will mostly affect apps in virtual environments; as on
Linux the apps would have been adapted to the stricter handling of the
kernel. I have done that for mine[2].

[1] http://www.pegatech.com/
[2] https://sourceforge.net/projects/notetakerpen/

Signed-off-by: Kurt Garloff <kurt@garloff.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agousb: chipidea: USB_CHIPIDEA should depend on HAS_DMA
Geert Uytterhoeven [Tue, 17 Sep 2013 04:37:25 +0000 (12:37 +0800)]
usb: chipidea: USB_CHIPIDEA should depend on HAS_DMA

If NO_DMA=y:

drivers/built-in.o: In function `dma_set_coherent_mask':
include/linux/dma-mapping.h:93: undefined reference to `dma_supported'

Reviewed-and-tested-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agousb: chipidea: udc: free pending TD at removal procedure
Peter Chen [Tue, 17 Sep 2013 04:37:24 +0000 (12:37 +0800)]
usb: chipidea: udc: free pending TD at removal procedure

There is a pending TD which is not freed after request finishes,
we do this due to a controller bug. This TD needs to be freed when
the driver is removed. It prints below error message when unload
chipidea driver at current code:
"ci_hdrc ci_hdrc.0: dma_pool_destroy ci_hw_td, b0001000 busy"
It indicates the buffer at dma pool are still in use.

This commit will free the pending TD at driver's removal procedure,
it can fix the problem described above.

Acked-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agousb: chipidea: imx: Add usb_phy_shutdown at probe's error path
Peter Chen [Tue, 17 Sep 2013 04:37:23 +0000 (12:37 +0800)]
usb: chipidea: imx: Add usb_phy_shutdown at probe's error path

If not, the PHY will be active even the controller is not in use.
We find this issue due to the PHY's clock refcount is not correct
due to -EPROBE_DEFER return after phy's init.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>