GitHub/LineageOS/G12/android_kernel_amlogic_linux-4.9.git
12 years agoBluetooth: trivial: Use defined PSMLEN instead of magic
Andrei Emeltchenko [Tue, 29 May 2012 07:04:05 +0000 (10:04 +0300)]
Bluetooth: trivial: Use defined PSMLEN instead of magic

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: check for already existent channel before create new one
Gustavo Padovan [Mon, 28 May 2012 01:27:58 +0000 (22:27 -0300)]
Bluetooth: check for already existent channel before create new one

Move this check to before the channel time creation simplifies the code
and avoid memory allocation if the channel already exist.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Move check for backlog size to l2cap_sock.c
Gustavo Padovan [Mon, 28 May 2012 01:27:55 +0000 (22:27 -0300)]
Bluetooth: Move check for backlog size to l2cap_sock.c

Remove socket specific code from l2cap_core.c

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Use chan->state instead of sk->sk_state
Gustavo Padovan [Mon, 28 May 2012 01:27:54 +0000 (22:27 -0300)]
Bluetooth: Use chan->state instead of sk->sk_state

These vars are kept in sync so we can use chan->state here.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Add l2cap_chan->ops->ready()
Andrei Emeltchenko [Mon, 28 May 2012 01:27:53 +0000 (22:27 -0300)]
Bluetooth: Add l2cap_chan->ops->ready()

This move socket specific code to l2cap_sock.c.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Move clean up code and set of SOCK_ZAPPED to l2cap_sock.c
Andrei Emeltchenko [Mon, 28 May 2012 01:27:52 +0000 (22:27 -0300)]
Bluetooth: Move clean up code and set of SOCK_ZAPPED to l2cap_sock.c

This remove a bit more of socket code from l2cap core, this calls set the
SOCK_ZAPPED and do some clean up depending on the socket state.

Reported-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Use chan as parameters for l2cap chan ops
Gustavo Padovan [Mon, 28 May 2012 01:27:51 +0000 (22:27 -0300)]
Bluetooth: Use chan as parameters for l2cap chan ops

Use chan instead of void * makes more sense here.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Really fix registering hci with duplicate name
Sasha Levin [Sun, 27 May 2012 20:36:56 +0000 (22:36 +0200)]
Bluetooth: Really fix registering hci with duplicate name

Commit fc50744 ("Bluetooth: Fix registering hci with duplicate name") didn't
fully fix the duplicate naming issue with devices, and duplicate device names
could still be created:

[  142.484097] device: 'hci1': device_add
[...]
[  150.545263] device: 'hci1': device_add
[  150.550128] kobject: 'hci1' (ffff880014cc4e58): kobject_add_internal: parent: 'bluetooth', set: 'devices'
[  150.558979] ------------[ cut here ]------------
[  150.561438] WARNING: at fs/sysfs/dir.c:529 sysfs_add_one+0xb0/0xd0()
[  150.572974] Hardware name: Bochs
[  150.580502] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1'
[  150.584444] Pid: 7563, comm: trinity-child1 Tainted: G        W    3.4.0-next-20120524-sasha #296
[...]

Instead of the weird logic and the attempt at keeping the device list sorted,
just use an IDA.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Use l2cap_chan_ready() in LE path
Gustavo Padovan [Fri, 25 May 2012 12:30:56 +0000 (09:30 -0300)]
Bluetooth: Use l2cap_chan_ready() in LE path

This replace code in l2cap_le_conn_ready() by a similar code in
l2cap_chan_ready().

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Remove extra l2cap_state_change(BT_CONNECTED)
Gustavo Padovan [Fri, 25 May 2012 12:30:53 +0000 (09:30 -0300)]
Bluetooth: Remove extra l2cap_state_change(BT_CONNECTED)

This is already performed inside l2cap_chan_ready(), so we don't need it
here again.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Get a more accurate L2CAP PDU len
Gustavo Padovan [Fri, 25 May 2012 21:57:05 +0000 (18:57 -0300)]
Bluetooth: Get a more accurate L2CAP PDU len

Both FCS and Extended header might be or might not be present in a ERTM
channel.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Define HCI AMP cmd struct
Andrei Emeltchenko [Fri, 25 May 2012 12:09:26 +0000 (15:09 +0300)]
Bluetooth: Define HCI AMP cmd struct

Add HCI commands to deal with Bluetooth AMP controllers.
Those commands will be used by bluetooth and softamp code.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Use __constant modifier in HCI code
Andrei Emeltchenko [Fri, 25 May 2012 08:38:27 +0000 (11:38 +0300)]
Bluetooth: Use __constant modifier in HCI code

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Use __constant when dealing with constants
Andrei Emeltchenko [Thu, 24 May 2012 12:42:51 +0000 (15:42 +0300)]
Bluetooth: Use __constant when dealing with constants

__constant_cpu_to_le16() is the right go here.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Define and use PSM identifiers
Andrei Emeltchenko [Thu, 24 May 2012 12:42:50 +0000 (15:42 +0300)]
Bluetooth: Define and use PSM identifiers

Define assigned Protocol and Service Multiplexor (PSM) identifiers
and use them instead of magic numbers.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Use lmp_ssp_capable() macro
Gustavo Padovan [Thu, 24 May 2012 06:36:37 +0000 (03:36 -0300)]
Bluetooth: Use lmp_ssp_capable() macro

Make the check more user friendly.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: btmrvl: add SD8787 Bluetooth AMP device ID
Bing Zhao [Thu, 24 May 2012 01:50:04 +0000 (18:50 -0700)]
Bluetooth: btmrvl: add SD8787 Bluetooth AMP device ID

SD8787 SDIO function 3 (device ID 0x911B) is for Bluetooth AMP.

Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Send a configuration request after security confirmation
Mat Martineau [Wed, 23 May 2012 21:59:30 +0000 (14:59 -0700)]
Bluetooth: Send a configuration request after security confirmation

Sometimes an ACL link must be raised to a higher security level after
an L2CAP connection is requested, but before a connection response is
sent.  In this case, a connection response sent by L2CAP was not
immediately followed by a configuration request.  Other code paths do
send this configuration request right away.  It was possible for the
connection to stall while L2CAP waited for the remote device (like
PTS) to trigger the configuration process.

Here is an abbreviated hcidump of the failure case with PTS:

1337806446.051982 > ACL data: handle 43 flags 0x02 dlen 10
    L2CAP(s): Info req: type 2
1337806446.052050 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x000000b8
1337806446.595320 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 4097 scid 0x0041
1337806446.595673 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 0
1337806446.595679 < ACL data: handle 43 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
1337806446.669835 > ACL data: handle 43 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00000028
1337806446.669899 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
1337806446.669906 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 1
<security setup here>
1337806446.769888 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 0 status 0

At this point, the connection stalls and no further messages are sent
on the L2CAP signaling channel.  No data is received either.

If we immediately send a configuration request after a successful connect
response, the connection completes:

1337724090.041162 > ACL data: handle 43 flags 0x02 dlen 10
    L2CAP(s): Info req: type 2
1337724090.041236 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x000000b8
1337724090.597128 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 4097 scid 0x0041
1337724090.597236 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 0
1337724090.597244 < ACL data: handle 43 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
1337724090.660842 > ACL data: handle 43 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00000028
1337724090.660926 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
1337724090.660934 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 1
<security setup here>
1337724090.755162 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 0 status 0
1337724090.755171 < ACL data: handle 43 flags 0x00 dlen 23
    L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 11
1337724091.361847 > ACL data: handle 43 flags 0x02 dlen 29
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 15
1337724091.863808 > ACL data: handle 43 flags 0x02 dlen 23
    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 11
1337724091.863882 < ACL data: handle 43 flags 0x00 dlen 29
    L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 15
1337724092.683745 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(d): cid 0x0040 len 8 [psm 4097]
      0000: 00 00 11 22 33 44 34 2f                           ..."3D4/

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Define L2CAP conf continuation flag
Andrei Emeltchenko [Wed, 23 May 2012 12:44:06 +0000 (15:44 +0300)]
Bluetooth: Define L2CAP conf continuation flag

Define Continuation flag which the only flag used from Flags field
in L2CAP Configuration Request and Response.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Remove unneeded EXPORT_SYMBOL
Gustavo Padovan [Wed, 23 May 2012 07:04:23 +0000 (04:04 -0300)]
Bluetooth: Remove unneeded EXPORT_SYMBOL

After l2cap, sco and bluetooth modules merge some symbols doesn't need to
be exported anymore.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Remove unnecessary headers include
Gustavo Padovan [Wed, 23 May 2012 07:04:22 +0000 (04:04 -0300)]
Bluetooth: Remove unnecessary headers include

Most of the include were unnecessary or already included by some other
header.
Replace module.h by export.h where possible.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in the subsystem
Gustavo Padovan [Wed, 23 May 2012 07:04:21 +0000 (04:04 -0300)]
Bluetooth: Fix coding style in the subsystem

This is some leftover from the last patches that fixed style. It is mostly
line over 80 characters fixes reported by checkpatch.pl.
checkpatch.pl is clean for these files now.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in include/net/bluetooth
Gustavo Padovan [Wed, 23 May 2012 07:04:20 +0000 (04:04 -0300)]
Bluetooth: Fix coding style in include/net/bluetooth

Fix all warning and errors reported by checkpatch but license trailing
whitespace and bdaddr_t definition.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Remove 'register' usage from the subsystem
Gustavo Padovan [Wed, 23 May 2012 07:04:19 +0000 (04:04 -0300)]
Bluetooth: Remove 'register' usage from the subsystem

Let the compiler chooses what is best.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Remove most of the inline usage
Gustavo Padovan [Wed, 23 May 2012 07:04:18 +0000 (04:04 -0300)]
Bluetooth: Remove most of the inline usage

Only obvious cases were left as inline, mostly oneline functions.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: trivial: Remove empty line
Andrei Emeltchenko [Wed, 23 May 2012 08:31:23 +0000 (11:31 +0300)]
Bluetooth: trivial: Remove empty line

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Preserve L2CAP flags values
Andrei Emeltchenko [Wed, 23 May 2012 08:31:22 +0000 (11:31 +0300)]
Bluetooth: Preserve L2CAP flags values

Previous callers of l2cap_build_conf_rsp in l2cap_config_req use
flags instead of continuation flag hardcoded value. It does not change
logic and preserve future possible flags.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Use defined link key size
Andrei Emeltchenko [Wed, 23 May 2012 08:31:20 +0000 (11:31 +0300)]
Bluetooth: Use defined link key size

Remove magic number with defined link key size.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Rename HCI_QUIRK_NO_RESET to HCI_QUIRK_RESET_ON_CLOSE
Szymon Janc [Wed, 23 May 2012 10:35:46 +0000 (12:35 +0200)]
Bluetooth: Rename HCI_QUIRK_NO_RESET to HCI_QUIRK_RESET_ON_CLOSE

HCI_QUIRK_NO_RESET name is misleading - purpose of this quirk is to
reset device on close instead of init, not to not reset at all.
Rename it to HCI_QUIRK_RESET_ON_CLOSE to avoid confusion.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix trailing whitespaces in license text
Gustavo Padovan [Tue, 22 May 2012 22:00:20 +0000 (19:00 -0300)]
Bluetooth: Fix trailing whitespaces in license text

As reported by checkpatch.pl

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Remove dead int returns
Gustavo Padovan [Mon, 21 May 2012 16:58:22 +0000 (13:58 -0300)]
Bluetooth: Remove dead int returns

These functions were returning always 0, we just make then void.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Remove double check for BT_CONNECTED
Gustavo Padovan [Mon, 21 May 2012 16:58:21 +0000 (13:58 -0300)]
Bluetooth: Remove double check for BT_CONNECTED

The same check is done just before call l2cap_streaming_send()

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Silent sparse warnings
Andrei Emeltchenko [Mon, 21 May 2012 12:47:46 +0000 (15:47 +0300)]
Bluetooth: Silent sparse warnings

Silence warnings below:

net/bluetooth/l2cap_core.c:1662:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1662:27: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1683:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1683:27: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2260:46: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2574:33: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2581:33: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:4556:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:4556:27: warning: Using plain integer
as NULL pointer

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Do not purge queue in Basic Mode
Gustavo Padovan [Fri, 18 May 2012 23:22:38 +0000 (20:22 -0300)]
Bluetooth: Do not purge queue in Basic Mode

chan->tx_q is only initialized if we use ERTM or Streaming mode.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Enable ERTM by default
Mat Martineau [Fri, 18 May 2012 03:53:55 +0000 (20:53 -0700)]
Bluetooth: Enable ERTM by default

This enables the new receive and transmit state machines.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Remove unused ERTM control field macros
Mat Martineau [Fri, 18 May 2012 03:53:54 +0000 (20:53 -0700)]
Bluetooth: Remove unused ERTM control field macros

Now that l2cap_ctrl is used to set up control fields, these macros are
not needed.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Set txwin values for streaming mode
Mat Martineau [Fri, 18 May 2012 03:53:53 +0000 (20:53 -0700)]
Bluetooth: Set txwin values for streaming mode

The transmit window values must be configured for streaming mode, even
though streaming mode does not have a window.  This enables use of
extended headers when the transmit window socket option is set to 64
or larger.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Remove unneccesary inline
Mat Martineau [Fri, 18 May 2012 03:53:52 +0000 (20:53 -0700)]
Bluetooth: Remove unneccesary inline

Let the compiler decide if inlining is appropriate.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Simplify the ERTM ack timeout
Mat Martineau [Fri, 18 May 2012 03:53:51 +0000 (20:53 -0700)]
Bluetooth: Simplify the ERTM ack timeout

Since l2cap_send_ack can trigger extra actions like sending iframes,
don't call it.  Just send an RR or RNR frame if an ack needs sending.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Use the ERTM transmit state machine from timeout handlers
Mat Martineau [Fri, 18 May 2012 03:53:50 +0000 (20:53 -0700)]
Bluetooth: Use the ERTM transmit state machine from timeout handlers

Different states have different actions for retransmit and monitor
timeouts, so remove the logic for those actions from the timer handlers.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Check rules when setting retransmit or monitor timers
Mat Martineau [Fri, 18 May 2012 03:53:49 +0000 (20:53 -0700)]
Bluetooth: Check rules when setting retransmit or monitor timers

The ERTM specification requires the retransmit timer to be cancelled
when the monitor timer is set.  The retransmit timer cannot be set
again while the monitor timer is pending.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Use new header structures in l2cap_send_rr_or_rnr
Mat Martineau [Fri, 18 May 2012 03:53:48 +0000 (20:53 -0700)]
Bluetooth: Use new header structures in l2cap_send_rr_or_rnr

struct l2cap_ctrl is now used, and the sframe is now sent directly
rather than depending on a separate call.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Handle incoming REJ frames
Mat Martineau [Fri, 18 May 2012 03:53:47 +0000 (20:53 -0700)]
Bluetooth: Handle incoming REJ frames

REJ frames are sent by the remote device to request that all frames
after a given sequence number be retransmitted.  These are also an
implicit indication that the remote device is not in a busy state and
can receive new iframes.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Handle SREJ requests to resend unacked frames
Mat Martineau [Fri, 18 May 2012 03:53:46 +0000 (20:53 -0700)]
Bluetooth: Handle SREJ requests to resend unacked frames

When a remote device sends an SREJ, retransmit the frame with the
corresponding sequence number (subject to special cases with poll and
final flags).  An SREJ is also an implicit indication the the remote
device is not in a busy state.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Reassemble all available data when retransmissions succeed.
Mat Martineau [Fri, 18 May 2012 03:53:45 +0000 (20:53 -0700)]
Bluetooth: Reassemble all available data when retransmissions succeed.

As retransmitted packets arrive, attempt to reassemble SDUs.  If all
requested retransmissions have been received, acknowledge them and
transition back to the RECV state.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Send SREJ frames when packets go missing
Mat Martineau [Fri, 18 May 2012 03:53:44 +0000 (20:53 -0700)]
Bluetooth: Send SREJ frames when packets go missing

The ERTM specification lays out three scenarios for sending SREJ
frames to request retransmission of specific frames.  l2cap_send_srej
requests all frames up to a given txseq that are not already queued
for reassembly.  l2cap_send_srej_tail only requests the most recent
missing frame.  l2cap_send_srej_list resends SREJ frames for data that
was requested for resend but never received.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Add implementation for retransmitting all unacked frames
Mat Martineau [Fri, 18 May 2012 03:53:43 +0000 (20:53 -0700)]
Bluetooth: Add implementation for retransmitting all unacked frames

This adds l2cap_ertm_resend to retransmit frames based on the sequence
numbers in chan->retrans_list.  If the retransmit limit is reached for
any individual frame is reached, the connection is dropped.  skbs that
are cloned already are copied to avoid modifying shared data (this is
uncommon).  To retransmit all frames, l2cap_retransmit_all now builds
a list of all unacked sequence numbers and then calls
l2cap_ertm_resend.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Add the ERTM receive state machine
Mat Martineau [Fri, 18 May 2012 03:53:42 +0000 (20:53 -0700)]
Bluetooth: Add the ERTM receive state machine

This adds a top-level state machine with handlers for two receive
states defined in the ERTM spec, RECV and SREJ_SENT.  The reqseq value
of the incoming frame is also validated at the top level and a
disconnection is forced if it is invalid.  The actions for the RECV
and SREJ_SENT states are implemented according to the state tables in
the ERTM specification.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Update l2cap_send_i_or_rr_or_rnr to fit the spec better
Mat Martineau [Fri, 18 May 2012 03:53:41 +0000 (20:53 -0700)]
Bluetooth: Update l2cap_send_i_or_rr_or_rnr to fit the spec better

This action now exactly matches what is defined in the ERTM
specification, including clearing the remote busy flag and setting the
retransmit timer rather than retransmitting frames directly.  The spec
does not retransmit frames as part of this action, since
retransmission is only triggered by REJ, SREJ, or an RR with the final
bit set.  struct l2cap_ctrl is also used to set up header values.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Use the transmit state machine for busy state changes
Mat Martineau [Fri, 18 May 2012 03:53:40 +0000 (20:53 -0700)]
Bluetooth: Use the transmit state machine for busy state changes

This lets the transmit state machine handle local busy state changes,
since different actions are taken in the different transmit states.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Refactor l2cap_send_ack
Mat Martineau [Fri, 18 May 2012 03:53:39 +0000 (20:53 -0700)]
Bluetooth: Refactor l2cap_send_ack

The function now encapsulates more of the logic to either immediately
send an ack if the transmit window is over 75% full, or wait for the
ack timer to expire if the transmit window is not full enough.  It is
also able to push out waiting iframes that can carry an
acknowledgement.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Remove receive code that has been superceded
Mat Martineau [Fri, 18 May 2012 03:53:38 +0000 (20:53 -0700)]
Bluetooth: Remove receive code that has been superceded

This deletes the receive code that had handlers for each frame type at
the top level, and then had logic to determine the receive state
within each handler.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Add streaming mode receive and incoming packet classifier
Mat Martineau [Fri, 18 May 2012 03:53:37 +0000 (20:53 -0700)]
Bluetooth: Add streaming mode receive and incoming packet classifier

Streaming mode reception is fairly simple, with in-sequence frames
being reassembled as they arrive.  Out-of-sequence frames are dropped,
and also clear any partially-assembled SDUs that may exist.

The packet classifier determines if the txseq value of the incoming
packet is expected, invalid (resulting in a disconnection), invalid
(ignorable), duplicate, or having to do with an SREJ request that was
previously sent.  The rules for each classification are defined in the
ERTM specification, and consolidating these rules in one place helps
clarify the receive state machine.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Consolidate common receive code for ERTM and streaming mode
Mat Martineau [Fri, 18 May 2012 03:53:36 +0000 (20:53 -0700)]
Bluetooth: Consolidate common receive code for ERTM and streaming mode

Creates a new l2cap_data_rcv function that combines previous code from
l2cap_ertm_data_rcv and l2cap_data_channel.  This reduces duplicate
code for streaming mode, and sets up a framework for the ERTM receive
state machine.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Refactor l2cap_send_sframe
Mat Martineau [Fri, 18 May 2012 03:53:35 +0000 (20:53 -0700)]
Bluetooth: Refactor l2cap_send_sframe

The new implementation uses struct l2cap_ctrl to set up the sframe
fields, and also reduces duplicate acks by canceling the ack timer
whenever an RR or RNR frame is sent.  sframe PDU generation is also
split in to a separate function to separate it from the logic related
to the connection state and sframe type.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Refactor l2cap_ertm_send
Mat Martineau [Fri, 18 May 2012 03:53:34 +0000 (20:53 -0700)]
Bluetooth: Refactor l2cap_ertm_send

The new implementation is aware of the new transmit state machine, and
uses struct l2cap_ctrl to compose ERTM headers.  It also has improved
error handling for allocation failures, and does not send the packet
until after all skb and channel data structures are updated.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Refactor l2cap_streaming_send
Mat Martineau [Fri, 18 May 2012 03:53:33 +0000 (20:53 -0700)]
Bluetooth: Refactor l2cap_streaming_send

This new implementation uses struct l2cap_ctrl to compose the
streaming mode headers.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Add a new L2CAP ERTM transmit state machine.
Mat Martineau [Fri, 18 May 2012 03:53:32 +0000 (20:53 -0700)]
Bluetooth: Add a new L2CAP ERTM transmit state machine.

This implements a top-level transmit state machine with handlers for
the two ERTM states defined in the specification: XMIT and WAIT_F.

The state machine accepts an event and, optionally, a list of skbs to
transmit.  In addition to data transmission, the local busy state can
be modified, acks are processed, and monitor and retransmit timeouts
are handled.  This mirrors the structure of the state tables in the
spec.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Change default state of ERTM disable flag
Mat Martineau [Fri, 18 May 2012 03:53:31 +0000 (20:53 -0700)]
Bluetooth: Change default state of ERTM disable flag

This is to allow for ERTM state machine replacement in the patches
that follow.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
12 years agoBluetooth: Fix early return from l2cap_chan_del
Mat Martineau [Fri, 18 May 2012 04:14:09 +0000 (21:14 -0700)]
Bluetooth: Fix early return from l2cap_chan_del

This fixes a regression from commit
2ead70b8390d199ca04cd35311b51f5f3676079e that is present in all
kernels starting at v3.0.

When L2CAP information was moved to struct l2cap_chan, a check was
added to l2cap_chan_del to avoid certain cleanup operations when ERTM
or streaming mode had not yet been initialized.  The logic in the
check did not take in to account that chan->conf_state is set to 0 in
l2cap_chan_ready, so l2cap_chan_del failed to cancel timers and leaked
memory any time the ERTM queues or lists were not empty.

This change makes sure that l2cap_chan_del only returns early if
ERTM initialization was not performed.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Free allocated ERTM SREJ list if init fails
Mat Martineau [Thu, 17 May 2012 23:20:14 +0000 (16:20 -0700)]
Bluetooth: Free allocated ERTM SREJ list if init fails

If the ERTM SREJ list is properly allocated but the retransmit list
allocation fails, the SREJ list must be freed before returning from
l2cap_ertm_init.  l2cap_chan_del will not clean up the SREJ list
if l2cap_ertm_init returns a failure code.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in hci_core.c
Gustavo Padovan [Thu, 17 May 2012 03:36:26 +0000 (00:36 -0300)]
Bluetooth: Fix coding style in hci_core.c

Follow net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in hci_conn.c
Gustavo Padovan [Thu, 17 May 2012 03:36:25 +0000 (00:36 -0300)]
Bluetooth: Fix coding style in hci_conn.c

Follow net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in hci_event.c
Gustavo Padovan [Thu, 17 May 2012 03:36:24 +0000 (00:36 -0300)]
Bluetooth: Fix coding style in hci_event.c

Follow the net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in hci_sysfs.c
Gustavo Padovan [Thu, 17 May 2012 03:36:23 +0000 (00:36 -0300)]
Bluetooth: Fix coding style in hci_sysfs.c

Follow the net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in hci_sock.c
Gustavo Padovan [Thu, 17 May 2012 03:36:22 +0000 (00:36 -0300)]
Bluetooth: Fix coding style in hci_sock.c

Follow the net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in sco.c
Gustavo Padovan [Thu, 17 May 2012 03:36:21 +0000 (00:36 -0300)]
Bluetooth: Fix coding style in sco.c

Follow the net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoBluetooth: Fix coding style in mgmt.c
Gustavo Padovan [Thu, 17 May 2012 03:36:20 +0000 (00:36 -0300)]
Bluetooth: Fix coding style in mgmt.c

Follow the coding style of the net subsystem.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
12 years agoLinux 3.5-rc1
Linus Torvalds [Sun, 3 Jun 2012 01:29:26 +0000 (18:29 -0700)]
Linux 3.5-rc1

12 years agoMerge tag 'dm-3.5-changes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/agk...
Linus Torvalds [Sun, 3 Jun 2012 00:39:40 +0000 (17:39 -0700)]
Merge tag 'dm-3.5-changes-1' of git://git./linux/kernel/git/agk/linux-dm

Pull device-mapper updates from Alasdair G Kergon:
 "Improve multipath's retrying mechanism in some defined circumstances
  and provide a simple reserve/release mechanism for userspace tools to
  access thin provisioning metadata while the pool is in use."

* tag 'dm-3.5-changes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm thin: provide userspace access to pool metadata
  dm thin: use slab mempools
  dm mpath: allow ioctls to trigger pg init
  dm mpath: delay retry of bypassed pg
  dm mpath: reduce size of struct multipath

12 years agodm thin: provide userspace access to pool metadata
Joe Thornber [Sat, 2 Jun 2012 23:30:01 +0000 (00:30 +0100)]
dm thin: provide userspace access to pool metadata

This patch implements two new messages that can be sent to the thin
pool target allowing it to take a snapshot of the _metadata_.  This,
read-only snapshot can be accessed by userland, concurrently with the
live target.

Only one metadata snapshot can be held at a time.  The pool's status
line will give the block location for the current msnap.

Since version 0.1.5 of the userland thin provisioning tools, the
thin_dump program displays the msnap as follows:

    thin_dump -m <msnap root> <metadata dev>

Available here: https://github.com/jthornber/thin-provisioning-tools

Now that userland can access the metadata we can do various things
that have traditionally been kernel side tasks:

     i) Incremental backups.

     By using metadata snapshots we can work out what blocks have
     changed over time.  Combined with data snapshots we can ensure
     the data doesn't change while we back it up.

     A short proof of concept script can be found here:

     https://github.com/jthornber/thinp-test-suite/blob/master/incremental_backup_example.rb

     ii) Migration of thin devices from one pool to another.

     iii) Merging snapshots back into an external origin.

     iv) Asyncronous replication.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm thin: use slab mempools
Mike Snitzer [Sat, 2 Jun 2012 23:30:00 +0000 (00:30 +0100)]
dm thin: use slab mempools

Use dedicated caches prefixed with a "dm_" name rather than relying on
kmalloc mempools backed by generic slab caches so the memory usage of
thin provisioning (and any leaks) can be accounted for independently.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm mpath: allow ioctls to trigger pg init
Mikulas Patocka [Sat, 2 Jun 2012 23:29:58 +0000 (00:29 +0100)]
dm mpath: allow ioctls to trigger pg init

After the failure of a group of paths, any alternative paths that
need initialising do not become available until further I/O is sent to
the device.  Until this has happened, ioctls return -EAGAIN.

With this patch, new paths are made available in response to an ioctl
too.  The processing of the ioctl gets delayed until this has happened.

Instead of returning an error, we submit a work item to kmultipathd
(that will potentially activate the new path) and retry in ten
milliseconds.

Note that the patch doesn't retry an ioctl if the ioctl itself fails due
to a path failure.  Such retries should be handled intelligently by the
code that generated the ioctl in the first place, noting that some SCSI
commands should not be retried because they are not idempotent (XOR write
commands).  For commands that could be retried, there is a danger that
if the device rejected the SCSI command, the path could be errorneously
marked as failed, and the request would be retried on another path which
might fail too.  It can be determined if the failure happens on the
device or on the SCSI controller, but there is no guarantee that all
SCSI drivers set these flags correctly.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm mpath: delay retry of bypassed pg
Mike Christie [Sat, 2 Jun 2012 23:29:45 +0000 (00:29 +0100)]
dm mpath: delay retry of bypassed pg

If I/O needs retrying and only bypassed priority groups are available,
set the pg_init_delay_retry flag to wait before retrying.

If, for example, the reason for the bypass is that the controller is
getting reset or there is a firmware upgrade happening, retrying right
away would cause a flood of log messages and retries for what could be a
few seconds or even several minutes.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm mpath: reduce size of struct multipath
Mike Snitzer [Sat, 2 Jun 2012 23:29:43 +0000 (00:29 +0100)]
dm mpath: reduce size of struct multipath

Move multipath structure's 'lock' and 'queue_size' members to eliminate
two 4-byte holes.  Also use a bit within a single unsigned int for each
existing flag (saves 8-bytes).  This allows future flags to be added
without each consuming an unsigned int.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 2 Jun 2012 23:22:51 +0000 (16:22 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking updates from David Miller:

 1) Make syn floods consume significantly less resources by

    a) Not pre-COW'ing routing metrics for SYN/ACKs
    b) Mirroring the device queue mapping of the SYN for the SYN/ACK
       reply.

    Both from Eric Dumazet.

 2) Fix calculation errors in Byte Queue Limiting, from Hiroaki SHIMODA.

 3) Validate the length requested when building a paged SKB for a
    socket, so we don't overrun the page vector accidently.  From Jason
    Wang.

 4) When netlabel is disabled, we abort all IP option processing when we
    see a CIPSO option.  This isn't the right thing to do, we should
    simply skip over it and continue processing the remaining options
    (if any).  Fix from Paul Moore.

 5) SRIOV fixes for the mellanox driver from Jack orgenstein and Marcel
    Apfelbaum.

 6) 8139cp enables the receiver before the ring address is properly
    programmed, which potentially lets the device crap over random
    memory.  Fix from Jason Wang.

 7) e1000/e1000e fixes for i217 RST handling, and an improper buffer
    address reference in jumbo RX frame processing from Bruce Allan and
    Sebastian Andrzej Siewior, respectively.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  fec_mpc52xx: fix timestamp filtering
  mcs7830: Implement link state detection
  e1000e: fix Rapid Start Technology support for i217
  e1000: look into the page instead of skb->data for e1000_tbi_adjust_stats()
  r8169: call netif_napi_del at errpaths and at driver unload
  tcp: reflect SYN queue_mapping into SYNACK packets
  tcp: do not create inetpeer on SYNACK message
  8139cp/8139too: terminate the eeprom access with the right opmode
  8139cp: set ring address before enabling receiver
  cipso: handle CIPSO options correctly when NetLabel is disabled
  net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()
  bql: Avoid possible inconsistent calculation.
  bql: Avoid unneeded limit decrement.
  bql: Fix POSDIFF() to integer overflow aware.
  net/mlx4_core: Fix obscure mlx4_cmd_box parameter in QUERY_DEV_CAP
  net/mlx4_core: Check port out-of-range before using in mlx4_slave_cap
  net/mlx4_core: Fixes for VF / Guest startup flow
  net/mlx4_en: Fix improper use of "port" parameter in mlx4_en_event
  net/mlx4_core: Fix number of EQs used in ICM initialisation
  net/mlx4_core: Fix the slave_id out-of-range test in mlx4_eq_int

12 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 2 Jun 2012 23:17:03 +0000 (16:17 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull straggler x86 fixes from Peter Anvin:
 "Three groups of patches:

  - EFI boot stub documentation and the ability to print error messages;
  - Removal for PTRACE_ARCH_PRCTL for x32 (obsolete interface which
    should never have been ported, and the port is broken and
    potentially dangerous.)
  - ftrace stack corruption fixes.  I'm not super-happy about the
    technical implementation, but it is probably the least invasive in
    the short term.  In the future I would like a single method for
    nesting the debug stack, however."

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, x32, ptrace: Remove PTRACE_ARCH_PRCTL for x32
  x86, efi: Add EFI boot stub documentation
  x86, efi; Add EFI boot stub console support
  x86, efi: Only close open files in error path
  ftrace/x86: Do not change stacks in DEBUG when calling lockdep
  x86: Allow nesting of the debug stack IDT setting
  x86: Reset the debug_stack update counter
  ftrace: Use breakpoint method to update ftrace caller
  ftrace: Synchronize variable setting with breakpoints

12 years agotty: Revert the tty locking series, it needs more work
Linus Torvalds [Sat, 2 Jun 2012 22:21:43 +0000 (15:21 -0700)]
tty: Revert the tty locking series, it needs more work

This reverts the tty layer change to use per-tty locking, because it's
not correct yet, and fixing it will require some more deep surgery.

The main revert is d29f3ef39be4 ("tty_lock: Localise the lock"), but
there are several smaller commits that built upon it, they also get
reverted here. The list of reverted commits is:

  fde86d310886 - tty: add lockdep annotations
  8f6576ad476b - tty: fix ldisc lock inversion trace
  d3ca8b64b97e - pty: Fix lock inversion
  b1d679afd766 - tty: drop the pty lock during hangup
  abcefe5fc357 - tty/amiserial: Add missing argument for tty_unlock()
  fd11b42e3598 - cris: fix missing tty arg in wait_event_interruptible_tty call
  d29f3ef39be4 - tty_lock: Localise the lock

The revert had a trivial conflict in the 68360serial.c staging driver
that got removed in the meantime.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agofec_mpc52xx: fix timestamp filtering
Stephan Gatzka [Sat, 2 Jun 2012 03:04:06 +0000 (03:04 +0000)]
fec_mpc52xx: fix timestamp filtering

skb_defer_rx_timestamp was called with a freshly allocated skb but must
be called with rskb instead.

Signed-off-by: Stephan Gatzka <stephan@gatzka.org>
Cc: stable <stable@vger.kernel.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomcs7830: Implement link state detection
Ondrej Zary [Fri, 1 Jun 2012 10:29:08 +0000 (10:29 +0000)]
mcs7830: Implement link state detection

Add .status callback that detects link state changes.
Tested with MCS7832CV-AA chip (9710:7830, identified as rev.C by the driver).
Fixes https://bugzilla.kernel.org/show_bug.cgi?id=28532

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge 'for-linus' branches from git://git.kernel.org/pub/scm/linux/kernel/git/viro...
Linus Torvalds [Sat, 2 Jun 2012 16:03:54 +0000 (09:03 -0700)]
Merge 'for-linus' branches from git://git./linux/kernel/git/viro/{vfs,signal}

Pull vfs fix and a fix from the signal changes for frv from Al Viro.

The __kernel_nlink_t for powerpc got scrogged because 64-bit powerpc
actually depended on the default "unsigned long", while 32-bit powerpc
had an explicit override to "unsigned short".  Al didn't notice, and
made both of them be the unsigned short.

The frv signal fix is fallout from simplifying the do_notify_resume()
code, and leaving an extra parenthesis.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  powerpc: Fix size of st_nlink on 64bit

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  frv: Remove bogus closing parenthesis

12 years agopowerpc: Fix size of st_nlink on 64bit
Anton Blanchard [Sat, 2 Jun 2012 11:34:52 +0000 (21:34 +1000)]
powerpc: Fix size of st_nlink on 64bit

commit e57f93cc53b7 (powerpc: get rid of nlink_t uses, switch to
explicitly-sized type) changed the size of st_nlink on ppc64 from
a long to a short, resulting in boot failures.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
12 years agofrv: Remove bogus closing parenthesis
Geert Uytterhoeven [Sat, 2 Jun 2012 11:08:39 +0000 (13:08 +0200)]
frv: Remove bogus closing parenthesis

Introduced by commit 6fd84c0831ec78d98736b76dc5e9b849f1dbfc9e
("TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is set")

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
12 years agoe1000e: fix Rapid Start Technology support for i217
Bruce Allan [Thu, 10 May 2012 02:51:17 +0000 (02:51 +0000)]
e1000e: fix Rapid Start Technology support for i217

The definition of I217_PROXY_CTRL must use the BM_PHY_REG() macro instead
of the PHY_REG() macro for PHY page 800 register 70 since it is for a PHY
register greater than the maximum allowed by the latter macro, and fix a
typo setting the I217_MEMPWR register in e1000_suspend_workarounds_ich8lan.

Also for clarity, rename a few defines as bit definitions instead of masks.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoe1000: look into the page instead of skb->data for e1000_tbi_adjust_stats()
Sebastian Andrzej Siewior [Tue, 15 May 2012 09:18:55 +0000 (09:18 +0000)]
e1000: look into the page instead of skb->data for e1000_tbi_adjust_stats()

This is another fixup where the data is not transfered into buffer
addressed by skb->data but into a page.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoMerge branch 'akpm' (Fixups for Andrew's patchbomb)
Linus Torvalds [Sat, 2 Jun 2012 02:56:23 +0000 (19:56 -0700)]
Merge branch 'akpm' (Fixups for Andrew's patchbomb)

Merge fixups for the mac NLS tables from Andrew.

* emailed from Andrew Morton, and one cleanup by me:
  nls: fix (and rename) mac NLS table files and config options
  fs/nls/Makefile: remove bogus CONFIG_ assignments

12 years agonls: fix (and rename) mac NLS table files and config options
Linus Torvalds [Sat, 2 Jun 2012 02:51:22 +0000 (19:51 -0700)]
nls: fix (and rename) mac NLS table files and config options

The config options in the Kconfig file (with _CODEPAGE_ in the name)
didn't match the config option name in the Makefile (no _CODEPAGE_).

And both of them were of the hard-to-read MACXYZZY variety, which made
them hard to parse for normal humans: MACROMAN easily reads as "macro
man", not as "Mac Roman".

So rename the options to be consistent, and be NLS_MAC_xyzzy.  Rename
the files to be mac-xyzzy.c too, and drop the "nls" part entirely (it's
already in the directory name).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agofs/nls/Makefile: remove bogus CONFIG_ assignments
Andrew Morton [Fri, 1 Jun 2012 21:57:41 +0000 (14:57 -0700)]
fs/nls/Makefile: remove bogus CONFIG_ assignments

These were debug things which snuck through.

Reported-by: Yinghai Lu <yinghai@kernel.org>
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge tag 'fbdev-updates-for-3.5' of git://github.com/schandinat/linux-2.6
Linus Torvalds [Fri, 1 Jun 2012 23:57:51 +0000 (16:57 -0700)]
Merge tag 'fbdev-updates-for-3.5' of git://github.com/schandinat/linux-2.6

Pull fbdev updates from Florian Tobias Schandinat:
 - driver for AUO-K1900 and AUO-K1901 epaper controller
 - large updates for OMAP (e.g. decouple HDMI audio and video)
 - some updates for Exynos and SH Mobile
 - various other small fixes and cleanups

* tag 'fbdev-updates-for-3.5' of git://github.com/schandinat/linux-2.6: (130 commits)
  video: bfin_adv7393fb: Fix cleanup code
  video: exynos_dp: reduce delay time when configuring video setting
  video: exynos_dp: move sw reset prioir to enabling sw defined function
  video: exynos_dp: use devm_ functions
  fb: handle NULL pointers in framebuffer release
  OMAPDSS: HDMI: OMAP4: Update IRQ flags for the HPD IRQ request
  OMAPDSS: Apply VENC timings even if panel is disabled
  OMAPDSS: VENC/DISPC: Delay dividing Y resolution for managers connected to VENC
  OMAPDSS: DISPC: Support rotation through TILER
  OMAPDSS: VRFB: remove compiler warnings when CONFIG_BUG=n
  OMAPFB: remove compiler warnings when CONFIG_BUG=n
  OMAPDSS: remove compiler warnings when CONFIG_BUG=n
  OMAPDSS: DISPC: fix usage of dispc_ovl_set_accu_uv
  OMAPDSS: use DSI_FIFO_BUG workaround only for manual update displays
  OMAPDSS: DSI: Support command mode interleaving during video mode blanking periods
  OMAPDSS: DISPC: Update Accumulator configuration for chroma plane
  drivers/video: fsl-diu-fb: don't initialize the THRESHOLDS registers
  video: exynos mipi dsi: support reverse panel type
  video: exynos mipi dsi: Properly interpret the interrupt source flags
  video: exynos mipi dsi: Avoid races in probe()
  ...

12 years agoMerge tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 1 Jun 2012 23:55:42 +0000 (16:55 -0700)]
Merge tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd

Pull mtd update from David Woodhouse:
 - More robust parsing especially of xattr data in JFFS2
 - Updates to mxc_nand and gpmi drivers to support new boards and device tree
 - Improve consistency of information about ECC strength in NAND devices
 - Clean up partition handling of plat_nand
 - Support NAND drivers without dedicated access to OOB area
 - BCH hardware ECC support for OMAP
 - Other fixes and cleanups, and a few new device IDs

Fixed trivial conflict in drivers/mtd/nand/gpmi-nand/gpmi-nand.c due to
added include files next to each other.

* tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd: (75 commits)
  mtd: mxc_nand: move ecc strengh setup before nand_scan_tail
  mtd: block2mtd: fix recursive call of mtd_writev
  mtd: gpmi-nand: define ecc.strength
  mtd: of_parts: fix breakage in Kconfig
  mtd: nand: fix scan_read_raw_oob
  mtd: docg3 fix in-middle of blocks reads
  mtd: cfi_cmdset_0002: Slight cleanup of fixup messages
  mtd: add fixup for S29NS512P NOR flash.
  jffs2: allow to complete xattr integrity check on first GC scan
  jffs2: allow to discriminate between recoverable and non-recoverable errors
  mtd: nand: omap: add support for hardware BCH ecc
  ARM: OMAP3: gpmc: add BCH ecc api and modes
  mtd: nand: check the return code of 'read_oob/read_oob_raw'
  mtd: nand: remove 'sndcmd' parameter of 'read_oob/read_oob_raw'
  mtd: m25p80: Add support for Winbond W25Q80BW
  jffs2: get rid of jffs2_sync_super
  jffs2: remove unnecessary GC pass on sync
  jffs2: remove unnecessary GC pass on umount
  jffs2: remove lock_super
  mtd: gpmi: add gpmi support for mx6q
  ...

12 years agoMerge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
Linus Torvalds [Fri, 1 Jun 2012 23:51:37 +0000 (16:51 -0700)]
Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86

Pull x86 platform driver updates from Matthew Garrett:
 "Some significant improvements for the Sony driver on newer machines,
  but other than that mostly just minor fixes and a patch to remove the
  broken rfkill code from the Dell driver."

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (35 commits)
  apple-gmux: Fix up the suspend/resume patch
  dell-laptop: Remove rfkill code
  toshiba_acpi: Fix mis-merge
  dell-laptop: Add touchpad led support for Dell V3450
  acer-wmi: add 3 laptops to video backlight vendor mode quirk table
  sony-laptop: add touchpad enable/disable function
  sony-laptop: add missing Fn key combos for 0x100 handlers
  sony-laptop: add support for more WWAN modems
  sony-laptop: new keyboard backlight handle
  sony-laptop: add high speed battery charging function
  sony-laptop: support automatic resume on lid open
  sony-laptop: adjust error handling in finding SNC handles
  sony-laptop: add thermal profiles support
  sony-laptop: support battery care functions
  sony-laptop: additional debug statements
  sony-laptop: improve SNC initialization and acpi notify callback code
  sony-laptop: use kstrtoul to parse sysfs values
  sony-laptop: generalise ACPI calls into SNC functions
  sony-laptop: fix return path when no ACPI buffer is allocated
  sony-laptop: use soft rfkill status stored in hw
  ...

12 years agoMerge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penber...
Linus Torvalds [Fri, 1 Jun 2012 23:50:23 +0000 (16:50 -0700)]
Merge branch 'slab/for-linus' of git://git./linux/kernel/git/penberg/linux

Pull slab updates from Pekka Enberg:
 "Mainly a bunch of SLUB fixes from Joonsoo Kim"

* 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux:
  slub: use __SetPageSlab function to set PG_slab flag
  slub: fix a memory leak in get_partial_node()
  slub: remove unused argument of init_kmem_cache_node()
  slub: fix a possible memory leak
  Documentations: Fix slabinfo.c directory in vm/slub.txt
  slub: fix incorrect return type of get_any_partial()

12 years agoMerge remote-tracking branch 'rostedt/tip/perf/urgent-2' into x86-urgent-for-linus
H. Peter Anvin [Fri, 1 Jun 2012 22:55:31 +0000 (15:55 -0700)]
Merge remote-tracking branch 'rostedt/tip/perf/urgent-2' into x86-urgent-for-linus

12 years agoMerge branch 'ux500/hickup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Fri, 1 Jun 2012 22:46:46 +0000 (15:46 -0700)]
Merge branch 'ux500/hickup' of git://git./linux/kernel/git/arm/arm-soc

Pull arm fixes for ux500 mismerge mishap from Arnd Bergmann:
 "The device tree conversion for arm/ux500 in 3.5 turns out to be
  incomplete because of a mismerge done by Linus Walleij that I failed
  to notice early enough and that Lee Jones as the original author of
  those patches did not manage to fix during the -next cycle.  While we
  originally to get a much larger set of ux500 device tree enablement
  patches merged, this did not happen in time.

  After some discussion at Linaro Connect conference this week, Lee has
  been able to do damage control and provide a series to put the broken
  platform back into usable shape for both DT and non-DT based booting.

  This series has not been part of linux-next and is based on top of the
  current state of the upstream kernel rather than an -rc, but this is
  the best we could manage given the earlier breakage."

* 'ux500/hickup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: ux500: Enable probing of pinctrl through Device Tree
  ARM: ux500: Add support for ab8500 regulators into the Device Tree
  ARM: ux500: Provide regulator support for SMSC911x via Device Tree
  ARM: ux500: Allow PRCMU regulator to be probed during a DT enabled boot
  ARM: ux500: Apply db8500-prcmu regulator information to db8500 Device Tree
  ARM: ux500: Only initialise STE's UIBs on boards which support them
  ARM: ux500: Disable platform setup of the ab8500 when DT is enabled
  ARM: ux500: Use correct format for dynamic IRQ assignment
  ARM: ux500: Re-enable SMSC911x platform code registration during non-DT boots
  ARM: ux500: PRCMU related configuration and layout corrections for Device Tree
  ARM: ux500: Remove DB8500 PRCMU platform registration when DT is enabled
  ARM: ux500: Disable SMSC911x platform code registration when DT is enabled
  ARM: ux500: New DT:ed u8500_init_devices for one-by-one device enablement
  ARM: ux500: New DT:ed snowball_platform_devs for one-by-one device enablement
  pinctrl-nomadik: Allow Device Tree driver probing

12 years agor8169: call netif_napi_del at errpaths and at driver unload
Devendra Naga [Thu, 31 May 2012 01:51:20 +0000 (01:51 +0000)]
r8169: call netif_napi_del at errpaths and at driver unload

when register_netdev fails, the init'ed NAPIs by netif_napi_add must be
deleted with netif_napi_del, and also when driver unloads, it should
delete the NAPI before unregistering netdevice using unregister_netdev.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 1 Jun 2012 22:40:29 +0000 (15:40 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "A bunch of fixes:
   - vmware memory corruption
   - ttm spinlock balance
   - cirrus/mgag200 work in the presence of efifb
  and finally Alex and Jerome managed to track down a magic set of bits
  that on certain rv740 and evergreen cards allow the correct use of the
  complete set of render backends, this makes the cards operate
  correctly in a number of scenarios we had issues in before, it also
  manages to boost speed on benchmarks my large amounts on these
  specific gpus."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/edid: Make the header fixup threshold tunable
  drm/radeon: fix regression in UMS CS ioctl
  drm/vmwgfx: Fix nasty write past alloced memory area
  drm/ttm: Fix spinlock imbalance
  drm/radeon: fixup tiling group size and backendmap on r6xx-r9xx (v4)
  drm/radeon: fix HD6790, HD6570 backend programming
  drm/radeon: properly program gart on rv740, juniper, cypress, barts, hemlock
  drm/radeon: fix bank information in tiling config
  drm/mgag200: kick off conflicting framebuffers earlier.
  drm/cirrus: kick out conflicting framebuffers earlier
  cirrus: avoid crash if driver fails to load

12 years agoMerge tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 1 Jun 2012 22:39:26 +0000 (15:39 -0700)]
Merge tag 'sound-3.5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Just a few trivial driver-specific fixes."

* tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hdspm - Work around broken DDS value on PCI RME MADI
  ALSA: usb-audio: fix rate_list memory leak
  ASoC: fsi: bugfix: ensure dma is terminated
  ASoC: fsi: bugfix: correct dma area
  ASoC: fsi: bugfix: enable master clock control on DMA stream
  ASoC: imx-ssi: Use clk_prepare_enable/clk_disable_unprepare

12 years agox86, x32, ptrace: Remove PTRACE_ARCH_PRCTL for x32
H.J. Lu [Tue, 22 May 2012 03:29:45 +0000 (20:29 -0700)]
x86, x32, ptrace: Remove PTRACE_ARCH_PRCTL for x32

When I added x32 ptrace to 3.4 kernel, I also include PTRACE_ARCH_PRCTL
support for x32 GDB  For ARCH_GET_FS/GS, it takes a pointer to int64.  But
at user level, ARCH_GET_FS/GS takes a pointer to int32.  So I have to add
x32 ptrace to glibc to handle it with a temporary int64 passed to kernel and
copy it back to GDB as int32.  Roland suggested that PTRACE_ARCH_PRCTL
is obsolete and x32 GDB should use fs_base and gs_base fields of
user_regs_struct instead.

Accordingly, remove PTRACE_ARCH_PRCTL completely from the x32 code to
avoid possible memory overrun when pointer to int32 is passed to
kernel.

Link: http://lkml.kernel.org/r/CAMe9rOpDzHfS7NH7m1vmD9QRw8SSj4Sc%2BaNOgcWm_WJME2eRsQ@mail.gmail.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@vger.kernel.org> v3.4
12 years agomtd: mxc_nand: move ecc strengh setup before nand_scan_tail
Sascha Hauer [Fri, 25 May 2012 14:22:42 +0000 (16:22 +0200)]
mtd: mxc_nand: move ecc strengh setup before nand_scan_tail

Since commit 6a918bade9dab40aaef80559bd1169c69e8d69cb, the mxc_nand driver
fails with:

Driver must set ecc.strength when using hardware ECC

This is because nand_scan_tail checks for correct ecc strength
settings, so we must set them up before nand_scan_tail.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@vger.kernel.org [3.4+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: block2mtd: fix recursive call of mtd_writev
Gabor Juhos [Wed, 23 May 2012 22:17:23 +0000 (00:17 +0200)]
mtd: block2mtd: fix recursive call of mtd_writev

The 'mtd_writev' interface calls the function assigned
to the '_write' field of a given mtd device if that is
not NULL. The block2mtd driver sets the '_writev' field
to the 'mtd_writev' function itself and thus causes a
endless loop.

This is caused by 1dbebd32562b3c2caeca35960e5cb00bfcc12900
(mtd: harmonize mtd_writev usage).

Remove the assignment from the block2mtd driver to fix the
issue.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: stable@kernel.org [3.3+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>