GitHub/mt8127/android_kernel_alcatel_ttab.git
15 years agotcp: tcp_vegas cong avoid fix
Doug Leith [Tue, 9 Dec 2008 08:13:04 +0000 (00:13 -0800)]
tcp: tcp_vegas cong avoid fix

This patch addresses a book-keeping issue in tcp_vegas.c.  At present
tcp_vegas does separate book-keeping of cwnd based on packet sequence
numbers.  A mismatch can develop between this book-keeping and
tp->snd_cwnd due, for example, to delayed acks acking multiple
packets.  When vegas transitions to reno operation (e.g. following
loss), then this mismatch leads to incorrect behaviour (akin to a cwnd
backoff).  This seems mostly to affect operation at low cwnds where
delayed acking can lead to a significant fraction of cwnd being
covered by a single ack, leading to the book-keeping mismatch.  This
patch modifies the congestion avoidance update to avoid the need for
separate book-keeping while leaving vegas congestion avoidance
functionally unchanged.  A secondary advantage of this modification is
that the use of fixed-point (via V_PARAM_SHIFT) and 64 bit arithmetic
is no longer necessary, simplifying the code.

Some example test measurements with the patched code (confirming no functional
change in the congestion avoidance algorithm) can be seen at:

http://www.hamilton.ie/doug/vegaspatch/

Signed-off-by: Doug Leith <doug.leith@nuim.ie>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agosungem: Make PCS PHY support partially work again.
David S. Miller [Tue, 9 Dec 2008 08:10:11 +0000 (00:10 -0800)]
sungem: Make PCS PHY support partially work again.

As reported by Hermann Lauer, PCS PHY support in the sungem
driver simply doesn't work.

When the chip is reset due to open, or some other similar operation,
the PCS is reset too but we don't program it back into a running
state.  The result is no link when the device is brought up.

This partially rectifies the situation for the moment, by kicking
the PCS after a sungem chip reset so that it will renegotiate and
be re-enabled again.

The behavior is still a little bit dodgy as the added renegotiate
make the link take some time after bringing the interface up,
but this is a significant improvement in that things actually work
now :-)

Based almost entirely upon an initial patch by Hermann.

Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotproxy: fixe a possible read from an invalid location in the socket match
Balazs Scheidler [Mon, 8 Dec 2008 07:53:46 +0000 (23:53 -0800)]
tproxy: fixe a possible read from an invalid location in the socket match

TIME_WAIT sockets need to be handled specially, and the socket match
casted inet_timewait_sock instances to inet_sock, which are not
compatible.

Handle this special case by checking sk->sk_state.

Signed-off-by: Balazs Scheidler <bazsi@balabit.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Sat, 6 Dec 2008 06:09:56 +0000 (22:09 -0800)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

15 years agozd1211rw: use unaligned safe memcmp() in-place of compare_ether_addr()
Shaddy Baddah [Fri, 28 Nov 2008 06:10:45 +0000 (17:10 +1100)]
zd1211rw: use unaligned safe memcmp() in-place of compare_ether_addr()

Under my 2.6.28-rc6 sparc64, when associating to an AP through my
zd1211rw device, I was seeing kernel log messages like (not exact output):

  Kernel unaligned access at TPC[10129b68] zd_mac_rx+0x144/0x32c [zd1211rw]

For the zd1211rw module, on RX, the 80211 packet will be located after
the PLCP header in the skb data buffer. The PLCP header being 5 bytes
long, the 80211 header will start unaligned from an aligned skb
buffer.

As per Documentation/unaligned-memory-access.txt, we must replace the
not unaligned() safe compare_ether_addr() with memcmp() to protect
architectures that require alignment.

Signed-off-by: Shaddy Baddah <shaddy_baddah@hotmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agomac80211: use unaligned safe memcmp() in-place of compare_ether_addr()
Shaddy Baddah [Fri, 28 Nov 2008 06:08:10 +0000 (17:08 +1100)]
mac80211: use unaligned safe memcmp() in-place of compare_ether_addr()

After fixing zd1211rw: use unaligned safe memcmp() in-place of
compare_ether_addr(), I started to see kernel log messages detailing
unaligned access:

  Kernel unaligned access at TPC[100f7f44] sta_info_get+0x24/0x68 [mac80211]

As with the aforementioned patch, the unaligned access was eminating
from a compare_ether_addr() call. Concerned that whilst it was safe to
assume that unalignment was the norm for the zd1211rw, and take
preventative measures, it may not be the case or acceptable to use the
easy fix of changing the call to memcmp().

My research however indicated that it was OK to do this, as there are
a few instances where memcmp() is the preferred mechanism for doing
mac address comparisons throughout the module.

Signed-off-by: Shaddy Baddah <shaddy_baddah@hotmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agoipw2200: fix netif_*_queue() removal regression
Zhu Yi [Thu, 27 Nov 2008 05:42:20 +0000 (13:42 +0800)]
ipw2200: fix netif_*_queue() removal regression

In "ipw2200: Call netif_*_queue() interfaces properly", netif_stop_queue()
and netif_wake_queue() were removed with the reason
"netif_carrier_{on,off}() handles starting and stopping packet flow into
the driver". The patch also removes a valid condition check that
ipw_tx_skb() cannot be called if device is not in STATUS_ASSOCIATED state.
But netif_carrier_off() doesn't guarantee netdev->hard_start_xmit won't
be called because linkwatch event is handled in a delayed workqueue. This
caused a kernel oops reported by Frank Seidel:
https://bugzilla.novell.com/show_bug.cgi?id=397390

This patch fixes the problem by moving the STATUS_ASSOCIATED check back
to ipw_tx_skb(). It also adds a missing netif_carrier_off() call to
ipw_disassociate().

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Chatre, Reinette <reinette.chatre@intel.com>
Tested-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agoiwlwifi: clean key table in iwl_clear_stations_table function
Tomas Winkler [Tue, 25 Nov 2008 21:29:03 +0000 (23:29 +0200)]
iwlwifi: clean key table in iwl_clear_stations_table function

This patch cleans uCode key table bit map iwl_clear_stations_table
since all stations are cleared also the key table must be.

Since the keys are not removed properly on suspend by mac80211
this may result in exhausting key table on resume leading
to memory corruption during removal

This patch also fixes a memory corruption problem reported in
http://marc.info/?l=linux-wireless&m=122641417231586&w=2 and tracked in
http://bugzilla.kernel.org/show_bug.cgi?id=12040.

When the key is removed a second time the offset is set to 255 - this
index is not valid for the ucode_key_table and corrupts the eeprom pointer
(which is 255 bits from ucode_key_table).

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Reported-by: Carlos R. Mafra <crmafra2@gmail.com>
Reported-by: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agotcp: tcp_vegas ssthresh bug fix
Doug Leith [Fri, 5 Dec 2008 01:17:18 +0000 (17:17 -0800)]
tcp: tcp_vegas ssthresh bug fix

This patch fixes a bug in tcp_vegas.c.  At the moment this code leaves
ssthresh untouched.  However, this means that the vegas congestion
control algorithm is effectively unable to reduce cwnd below the
ssthresh value (if the vegas update lowers the cwnd below ssthresh,
then slow start is activated to raise it back up).  One example where
this matters is when during slow start cwnd overshoots the link
capacity and a flow then exits slow start with ssthresh set to a value
above where congestion avoidance would like to adjust it.

Signed-off-by: Doug Leith <doug.leith@nuim.ie>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agocan: omit received RTR frames for single ID filter lists
Oliver Hartkopp [Thu, 4 Dec 2008 23:01:08 +0000 (15:01 -0800)]
can: omit received RTR frames for single ID filter lists

Since commit d253eee20195b25e298bf162a6e72f14bf4803e5 the single CAN
identifier filter lists handle only non-RTR CAN frames.

So we need to omit the check of these filter lists when receiving RTR
CAN frames.

Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoATM: CVE-2008-5079: duplicate listen() on socket corrupts the vcc table
Chas Williams [Thu, 4 Dec 2008 22:58:13 +0000 (14:58 -0800)]
ATM: CVE-2008-5079: duplicate listen() on socket corrupts the vcc table

As reported by Hugo Dias that it is possible to cause a local denial
of service attack by calling the svc_listen function twice on the same
socket and reading /proc/net/atm/*vc

Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetx-eth: initialize per device spinlock
Uwe Kleine-König [Thu, 4 Dec 2008 06:18:59 +0000 (22:18 -0800)]
netx-eth: initialize per device spinlock

The spinlock used in the netx-eth driver was never properly initialized.
This was noticed using CONFIG_DEBUG_SPINLOCK=y

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotcp: make urg+gso work for real this time
Ilpo Järvinen [Thu, 4 Dec 2008 05:24:48 +0000 (21:24 -0800)]
tcp: make urg+gso work for real this time

I should have noticed this earlier... :-) The previous solution
to URG+GSO/TSO will cause SACK block tcp_fragment to do zig-zig
patterns, or even worse, a steep downward slope into packet
counting because each skb pcount would be truncated to pcount
of 2 and then the following fragments of the later portion would
restore the window again.

Basically this reverts "tcp: Do not use TSO/GSO when there is
urgent data" (33cf71cee1). It also removes some unnecessary code
from tcp_current_mss that didn't work as intented either (could
be that something was changed down the road, or it might have
been broken since the dawn of time) because it only works once
urg is already written while this bug shows up starting from
~64k before the urg point.

The retransmissions already are split to mss sized chunks, so
only new data sending paths need splitting in case they have
a segment otherwise suitable for gso/tso. The actually check
can be improved to be more narrow but since this is late -rc
already, I'll postpone thinking the more fine-grained things.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenc28j60: Fix sporadic packet loss (corrected again)
Baruch Siach [Tue, 2 Dec 2008 05:07:01 +0000 (05:07 +0000)]
enc28j60: Fix sporadic packet loss (corrected again)

Packet data read from the RX buffer the when the RSV is at the end of the RX
buffer does not warp around. This causes packet loss, as the actual data is
never read. Fix this by calculating the right packet data location.

Thanks to Shachar Shemesh for suggesting the fix.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Claudio Lanconelli <lanconelli.claudio@eptar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agohysdn: fix writing outside the field on 64 bits
Pascal Terjan [Mon, 1 Dec 2008 12:24:25 +0000 (12:24 +0000)]
hysdn: fix writing outside the field on 64 bits

ifa_local is assumed to be unsigned long which lead to writing the address
at dev->dev_addr-2 instead of +2

noticed thanks to gcc:

drivers/isdn/hysdn/hysdn_net.c: In function `net_open':
drivers/isdn/hysdn/hysdn_net.c:91: warning: array subscript is below array bounds

Signed-off-by: Pascal Terjan <pterjan@mandriva.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agob1isa: fix b1isa_exit() to really remove registered capi controllers
Wilfried Klaebe [Thu, 4 Dec 2008 04:57:19 +0000 (20:57 -0800)]
b1isa: fix b1isa_exit() to really remove registered capi controllers

On "/etc/init.d/capiutils stop", this oops happened.

The oops happens on reading /proc/capi/controllers because
capi_ctrl->procinfo is called for the wrongly not unregistered
controller, which points to b1isa_procinfo(), which was removed on
module unload.

b1isa_exit() did not call b1isa_remove() for its controllers because
io[0] == 0 on module unload despite having been 0x340 on module load.

Besides, just removing the controllers that where added on module
load time and not those that were added later via b1isa_add_card() is
wrong too - the place where all added cards are found is isa_dev[].

relevant dmesg lines:

[    0.000000] Linux version 2.6.27.4 (w@shubashi) (gcc version 4.3.2 (Debian 4.3.2-1) ) #3 Thu Oct 30 16:49:03 CET 2008

[   67.403555] CAPI Subsystem Rev 1.1.2.8
[   68.529154] capifs: Rev 1.1.2.3
[   68.563292] capi20: Rev 1.1.2.7: started up with major 68 (middleware+capifs)
[   77.026936] b1: revision 1.1.2.2
[   77.049992] b1isa: revision 1.1.2.3
[   77.722655] kcapi: Controller [001]: b1isa-340 attached
[   77.722671] b1isa: AVM B1 ISA at i/o 0x340, irq 5, revision 255
[   81.272669] b1isa-340: card 1 "B1" ready.
[   81.272683] b1isa-340: card 1 Protocol: DSS1
[   81.272689] b1isa-340: card 1 Linetype: point to multipoint
[   81.272695] b1isa-340: B1-card (3.11-03) now active
[   81.272702] kcapi: card [001] "b1isa-340" ready.

[  153.721281] kcapi: card [001] down.
[  154.151889] BUG: unable to handle kernel paging request at e87af000
[  154.152081] IP: [<e87af000>]
[  154.153292] *pde = 2655b067 *pte = 00000000
[  154.153307] Oops: 0000 [#1]
[  154.153360] Modules linked in: rfcomm l2cap ppdev lp ipt_MASQUERADE tun capi capifs kernelcapi ac battery nfsd exportfs nfs lockd nfs_acl sunrpc sit tunnel4 bridge stp llc ipt_REJECT ipt_LOG xt_tcpudp xt_state iptable_filter iptable_mangle iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables nls_utf8 isofs nls_base zlib_inflate loop ipv6 netconsole snd_via82xx dvb_usb_dib0700 gameport dib7000p dib7000m dvb_usb snd_ac97_codec ac97_bus dvb_core mt2266 snd_pcm tuner_xc2028 dib3000mc dibx000_common mt2060 dib0070 snd_page_alloc snd_mpu401_uart snd_seq_midi snd_seq_midi_event btusb snd_rawmidi bluetooth snd_seq snd_timer snd_seq_device snd via686a i2c_viapro soundcore i2c_core parport_pc parport button dm_mirror dm_log dm_snapshot floppy sg ohci1394 uhci_hcd ehci_hcd 8139too mii ieee1394 usbcore sr_mod cdrom sd_mod thermal processor fan [last unloaded: b1]
[  154.153360]
[  154.153360] Pid: 4132, comm: capiinit Not tainted (2.6.27.4 #3)
[  154.153360] EIP: 0060:[<e87af000>] EFLAGS: 00010286 CPU: 0
[  154.153360] EIP is at 0xe87af000
[  154.153360] EAX: e6b9ccc8 EBX: e6b9ccc8 ECX: e87a0c67 EDX: e87af000
[  154.153360] ESI: e142bbc0 EDI: e87a56e0 EBP: e0505f0c ESP: e0505ee4
[  154.153360]  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
[  154.153360] Process capiinit (pid: 4132, ti=e0504000 task=d1196cf0 task.ti=e0504000)
[  154.153360] Stack: e879f650 00000246 e0505ef4 c01472eb e0505f0c 00000246 e7001780 fffffff4
[  154.153360]        fffffff4 e142bbc0 e0505f48 c01a56c6 00000400 b805e000 d102dc80 e142bbe0
[  154.153360]        00000000 e87a56e0 00000246 e12617ac 00000000 00000000 e1261760 fffffffb
[  154.153360] Call Trace:
[  154.153360]  [<e879f650>] ? controller_show+0x20/0x90 [kernelcapi]
[  154.153360]  [<c01472eb>] ? trace_hardirqs_on+0xb/0x10
[  154.153360]  [<c01a56c6>] ? seq_read+0x126/0x2f0
[  154.153360]  [<c01a55a0>] ? seq_read+0x0/0x2f0
[  154.153360]  [<c01c033c>] ? proc_reg_read+0x5c/0x90
[  154.153360]  [<c0189919>] ? vfs_read+0x99/0x140
[  154.153360]  [<c01c02e0>] ? proc_reg_read+0x0/0x90
[  154.153360]  [<c0189a7d>] ? sys_read+0x3d/0x70
[  154.153360]  [<c0103c3d>] ? sysenter_do_call+0x12/0x35
[  154.153360]  =======================
[  154.153360] Code:  Bad EIP value.
[  154.153360] EIP: [<e87af000>] 0xe87af000 SS:ESP 0068:e0505ee4
[  154.153360] ---[ end trace 23750b6c2862de94 ]---

Signed-off-by: Wilfried Klaebe <linux-kernel@lebenslange-mailadresse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agocan: Fix CAN_(EFF|RTR)_FLAG handling in can_filter
Oliver Hartkopp [Wed, 3 Dec 2008 23:52:35 +0000 (15:52 -0800)]
can: Fix CAN_(EFF|RTR)_FLAG handling in can_filter

Due to a wrong safety check in af_can.c it was not possible to filter
for SFF frames with a specific CAN identifier without getting the
same selected CAN identifier from a received EFF frame also.

This fix has a minimum (but user visible) impact on the CAN filter
API and therefore the CAN version is set to a new date.

Indeed the 'old' API is still working as-is. But when now setting
CAN_(EFF|RTR)_FLAG in can_filter.can_mask you might get less traffic
than before - but still the stuff that you expected to get for your
defined filter ...

Thanks to Kurt Van Dijck for pointing at this issue and for the review.

Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoPhonet: do not dump addresses from other namespaces
remi.denis-courmont@nokia [Mon, 1 Dec 2008 02:37:20 +0000 (02:37 +0000)]
Phonet: do not dump addresses from other namespaces

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetlabel: Fix a potential NULL pointer dereference
Paul Moore [Wed, 3 Dec 2008 08:37:04 +0000 (00:37 -0800)]
netlabel: Fix a potential NULL pointer dereference

Fix a potential NULL pointer dereference seen when trying to remove a
static label configuration with an invalid address/mask combination.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agobnx2: Add workaround to handle missed MSI.
Michael Chan [Wed, 3 Dec 2008 08:36:15 +0000 (00:36 -0800)]
bnx2: Add workaround to handle missed MSI.

The bnx2 chips do not support per MSI vector masking.  On 5706/5708, new MSI
address/data are stored only when the MSI enable bit is toggled.  As a result,
SMP affinity no longer works in the latest kernel.  A more serious problem is
that the driver will no longer receive interrupts when the MSI receiving CPU
goes offline.

The workaround in this patch only addresses the problem of CPU going offline.
When that happens, the driver's timer function will detect that it is making
no forward progress on pending interrupt events and will recover from it.

Eric Dumazet reported the problem.

We also found that if an interrupt is internally asserted while MSI and INTA
are disabled, the chip will end up in the same state after MSI is re-enabled.
The same workaround is needed for this problem.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Tested-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoxfrm: Fix kernel panic when flush and dump SPD entries
Wei Yongjun [Wed, 3 Dec 2008 08:27:18 +0000 (00:27 -0800)]
xfrm: Fix kernel panic when flush and dump SPD entries

After flush the SPD entries, dump the SPD entries will cause kernel painc.

Used the following commands to reproduct:

- echo 'spdflush;' | setkey -c
- echo 'spdadd 3ffe:501:ffff:ff01::/64 3ffe:501:ffff:ff04::/64  any -P out ipsec \
  ah/tunnel/3ffe:501:ffff:ff00:200:ff:fe00:b0b0-3ffe:501:ffff:ff02:200:ff:fe00:a1a1/require;\
  spddump;' | setkey -c
- echo 'spdflush; spddump;' | setkey -c
- echo 'spdadd 3ffe:501:ffff:ff01::/64 3ffe:501:ffff:ff04::/64  any -P out ipsec \
  ah/tunnel/3ffe:501:ffff:ff00:200:ff:fe00:b0b0-3ffe:501:ffff:ff02:200:ff:fe00:a1a1/require;\
  spddump;' | setkey -c

This is because when flush the SPD entries, the SPD entry is not remove
from the list.

This patch fix the problem by remove the SPD entry from the list.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Tue, 2 Dec 2008 23:58:20 +0000 (15:58 -0800)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] hpwdt: Fix kdump when using hpwdt
  [WATCHDOG] hpwdt: set the mapped BIOS address space as executable
  [WATCHDOG] iTCO_wdt: add PCI ID's for ICH9 & ICH10 chipsets
  [WATCHDOG] iTCO_wdt : correct status clearing
  [WATCHDOG] iTCO_wdt : problem with rebooting on new ICH9 based motherboards
  [WATCHDOG] fix mtx1_wdt compilation failure

15 years agoMerge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
Linus Torvalds [Tue, 2 Dec 2008 23:56:55 +0000 (15:56 -0800)]
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6

* 'linux-next' of git://git.infradead.org/ubifs-2.6:
  UBIFS: pre-allocate bulk-read buffer
  UBIFS: do not allocate too much
  UBIFS: do not print scary memory allocation warnings
  UBIFS: allow for gaps when dirtying the LPT
  UBIFS: fix compilation warnings
  MAINTAINERS: change UBI/UBIFS git tree URLs
  UBIFS: endian handling fixes and annotations
  UBIFS: remove printk

15 years agoMerge branch 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 2 Dec 2008 23:56:17 +0000 (15:56 -0800)]
Merge branch 'kvm-updates/2.6.28' of git://git./linux/kernel/git/avi/kvm

* 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
  KVM: MMU: avoid creation of unreachable pages in the shadow
  KVM: ppc: stop leaking host memory on VM exit
  KVM: MMU: fix sync of ptes addressed at owner pagetable
  KVM: ia64: Fix: Use correct calling convention for PAL_VPS_RESUME_HANDLER
  KVM: ia64: Fix incorrect kbuild CFLAGS override
  KVM: VMX: Fix interrupt loss during race with NMI
  KVM: s390: Fix problem state handling in guest sigp handler

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Tue, 2 Dec 2008 23:55:43 +0000 (15:55 -0800)]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix offset calculation in compute_size()
  rtc: rtc-starfire fixes

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Tue, 2 Dec 2008 23:55:05 +0000 (15:55 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (30 commits)
  MAINTAINERS: add netdev to ATM
  ATM: horizon, fix hrz_probe fail path
  pppol2tp: Add missing sock_put() in pppol2tp_release()
  net: Fix soft lockups/OOM issues w/ unix garbage collector
  macvlan: don't broadcast PAUSE frames to macvlan devices
  Phonet: fix oops in phonet_address_del() on non-Phonet device
  netfilter: ctnetlink: fix GFP_KERNEL allocation under spinlock
  sungem: Fix PCS_MIICTRL register write in gem_init_phy().
  net: make skb_truesize_bug() call WARN()
  net: hp-plus uses eip_poll
  net/wireless/reg.c: fix bad WARN_ON in if statement
  ath5k: disable beacon filter when station is not associated
  ath5k: fix Security issue in DebugFS part of ath5k
  ath9k: correct expected max RX buffer size
  ath9k: Fix SW-IOMMU bounce buffer starvation
  mac80211 : Fix setting ad-hoc mode and non-ibss channel
  iwlagn: fix DMA sync
  phylib: Add Vitesse VSC8221 SGMII PHY
  rose: zero length frame filtering in af_rose.c
  bridge: netfilter: fix update_pmtu crash with GRE
  ...

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Tue, 2 Dec 2008 23:53:41 +0000 (15:53 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Update defconfigs for 2.6.28-rc7
  macfb: Do not overflow fb_fix_screeninfo.id

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Tue, 2 Dec 2008 23:53:10 +0000 (15:53 -0800)]
Merge git://git./linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  alim15x3: fix sparse warning
  ide: remove dead code from drive_is_ready()
  ide: fix build for DEBUG_PM
  ide: respect current DMA setting during resume
  ide: add SAMSUNG SP0822N with firmware WA100-10 to ivb_list[]
  amd74xx: workaround unreliable AltStatus register for nVidia controllers
  ide: fix the ide_release_lock imbalance

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Tue, 2 Dec 2008 23:52:28 +0000 (15:52 -0800)]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] stex: switch to block timeout
  [SCSI] make scsi_eh_try_stu use block timeout
  [SCSI] megaraid_sas: switch to block timeout
  [SCSI] ibmvscsi: switch to block timeout
  [SCSI] aacraid: switch to block timeout
  [SCSI] zfcp: prevent double decrement on host_busy while being busy
  [SCSI] zfcp: fix deadlock between wq triggered port scan and ERP
  [SCSI] zfcp: eliminate race between validation and locking
  [SCSI] zfcp: verify for correct rport state before scanning for SCSI devs
  [SCSI] zfcp: returning an ERR_PTR where a NULL value is expected
  [SCSI] zfcp: Fix opening of wka ports
  [SCSI] zfcp: fix remote port status check
  [SCSI] fc_transport: fix old bug on bitflag definitions
  [SCSI] Fix hang in starved list processing

15 years agoMN10300: Fix application of kernel module relocations
Mark Salter [Tue, 2 Dec 2008 14:38:09 +0000 (14:38 +0000)]
MN10300: Fix application of kernel module relocations

This fixes the MN10300 kernel module linking to match the toolchain.  RELA
relocs don't use the value at the location being relocated.  This has been
working because the tools always leave the value at the target location
cleared.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agosgi-gru: call fs_initcall() if statically linked
Dean Nelson [Tue, 2 Dec 2008 14:06:01 +0000 (08:06 -0600)]
sgi-gru: call fs_initcall() if statically linked

If xpc.ko and gru.ko are both statically linked into the kernel, then
xpc_init() can get called before gru_init() and make a call to one of the
gru's exported functions before the gru has initialized itself. The end
result is a NULL dereference.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopowerpc: Use physical cpu id when setting the processor affinity
Kumar Gala [Tue, 2 Dec 2008 19:37:01 +0000 (13:37 -0600)]
powerpc: Use physical cpu id when setting the processor affinity

In the CONFIG_SMP case the irq_choose_cpu() code was returning back
a logical cpu id not the physical id.  We were writing that directly
into the HW register.

We need to be calling get_hard_smp_processor_id() so irq_choose_cpu()
always returns a physical cpu id.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agovmscan: evict streaming IO first
Rik van Riel [Tue, 2 Dec 2008 18:31:52 +0000 (10:31 -0800)]
vmscan: evict streaming IO first

Count the insertion of new pages in the statistics used to drive the
pageout scanning code.  This should help the kernel quickly evict
streaming file IO.

We count on the fact that new file pages start on the inactive file LRU
and new anonymous pages start on the active anon list.  This means
streaming file IO will increment the recent scanned file statistic, while
leaving the recent rotated file statistic alone, driving pageout scanning
to the file LRUs.

Pageout activity does its own list manipulation.

Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Tested-by: Gene Heskett <gene.heskett@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agobdi: register sysfs bdi device only once per queue
Kay Sievers [Tue, 2 Dec 2008 18:31:50 +0000 (10:31 -0800)]
bdi: register sysfs bdi device only once per queue

Devices which share the same queue, like floppies and mtd devices, get
registered multiple times in the bdi interface, but bdi accounts only the
last registered device of the devices sharing one queue.

On remove, all earlier registered devices leak, stay around in sysfs, and
cause "duplicate filename" errors if the devices are re-created.

This prevents the creation of multiple bdi interfaces per queue, and the
bdi device will carry the dev_t name of the block device which is the
first one registered, of the pool of devices using the same queue.

[akpm@linux-foundation.org: add a WARN_ON so we know which drivers are misbehaving]
Tested-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agonfsd: fix vm overcommit crash fix #2
Junjiro R. Okajima [Tue, 2 Dec 2008 18:31:46 +0000 (10:31 -0800)]
nfsd: fix vm overcommit crash fix #2

The previous patch from Alan Cox ("nfsd: fix vm overcommit crash",
commit 731572d39fcd3498702eda4600db4c43d51e0b26) fixed the problem where
knfsd crashes on exported shmemfs objects and strict overcommit is set.

But the patch forgot supporting the case when CONFIG_SECURITY is
disabled.

This patch copies a part of his fix which is mainly for detecting a bug
earlier.

Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Junjiro R. Okajima <hooanon05@yahoo.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agom68k: Update defconfigs for 2.6.28-rc7
Geert Uytterhoeven [Tue, 2 Dec 2008 19:58:26 +0000 (20:58 +0100)]
m68k: Update defconfigs for 2.6.28-rc7

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
15 years agoalim15x3: fix sparse warning
Hannes Eder [Tue, 2 Dec 2008 19:40:04 +0000 (20:40 +0100)]
alim15x3: fix sparse warning

Fix this sparse warning:

  drivers/ide/alim15x3.c:594:2: warning: returning void-valued expression

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove dead code from drive_is_ready()
Bartlomiej Zolnierkiewicz [Tue, 2 Dec 2008 19:40:04 +0000 (20:40 +0100)]
ide: remove dead code from drive_is_ready()

We guarantee 400ns delay at the time of issuing the command.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: fix build for DEBUG_PM
Bartlomiej Zolnierkiewicz [Tue, 2 Dec 2008 19:40:03 +0000 (20:40 +0100)]
ide: fix build for DEBUG_PM

Also while at it:

* Drop unused arguments from ide_complete_power_step().

* Move DEBUG_PM printk() from ide_end_drive_cmd() to
  ide_complete_power_step().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: respect current DMA setting during resume
Bartlomiej Zolnierkiewicz [Tue, 2 Dec 2008 19:40:03 +0000 (20:40 +0100)]
ide: respect current DMA setting during resume

Respect current DMA setting during resume, otherwise PIO timings
may get destroyed if host uses shared PIO/MWDMA timings.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: add SAMSUNG SP0822N with firmware WA100-10 to ivb_list[]
Bartlomiej Zolnierkiewicz [Tue, 2 Dec 2008 19:40:03 +0000 (20:40 +0100)]
ide: add SAMSUNG SP0822N with firmware WA100-10 to ivb_list[]

Should fix kernel.org bug #10225:
http://bugzilla.kernel.org/show_bug.cgi?id=10225

Reported-by: Matthias B. <haferfrost@web.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Sergei Shtyltov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoamd74xx: workaround unreliable AltStatus register for nVidia controllers
Bartlomiej Zolnierkiewicz [Tue, 2 Dec 2008 19:40:03 +0000 (20:40 +0100)]
amd74xx: workaround unreliable AltStatus register for nVidia controllers

It seems that on some nVidia controllers using AltStatus register
can be unreliable so default to Status register if the PCI device
is in Compatibility Mode.  In order to achieve this:

* Add ide_pci_is_in_compatibility_mode() inline helper to <linux/ide.h>.

* Add IDE_HFLAG_BROKEN_ALTSTATUS host flag and set it in amd74xx host
  driver for nVidia controllers in Compatibility Mode.

* Teach actual_try_to_identify() and drive_is_ready() about the new flag.

This fixes the regression caused by removal of CONFIG_IDEPCI_SHARE_IRQ
config option in 2.6.25 and using AltStatus register unconditionally when
available (kernel.org bugs #11659 and #10216).

[ Moreover for CONFIG_IDEPCI_SHARE_IRQ=y (which is what most people
  and distributions use) it never worked correctly. ]

Thanks to Remy LABENE and Lars Winterfeld for help with debugging the problem.

More info at:
http://bugzilla.kernel.org/show_bug.cgi?id=11659
http://bugzilla.kernel.org/show_bug.cgi?id=10216

Reported-by: Remy LABENE <remy.labene@free.fr>
Tested-by: Remy LABENE <remy.labene@free.fr>
Tested-by: Lars Winterfeld <lars.winterfeld@tu-ilmenau.de>
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: fix the ide_release_lock imbalance
Michael Schmitz [Tue, 2 Dec 2008 19:40:02 +0000 (20:40 +0100)]
ide: fix the ide_release_lock imbalance

ide_release_lock() spits out lots of:

ide_release_lock: bug

warnings on Atari Falcon.

Fix the ide_release_lock imbalance.

Signed-off-by: Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agomacfb: Do not overflow fb_fix_screeninfo.id
Finn Thain [Tue, 18 Nov 2008 19:40:40 +0000 (20:40 +0100)]
macfb: Do not overflow fb_fix_screeninfo.id

Don't overflow the 16-character fb_fix_screeninfo id string (fixes some
console erasing and blanking artifacts). Have the ID default to "Unknown"
on machines with no built-in video and no nubus devices. Check for
fb_alloc_cmap failure.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
15 years agoLinux 2.6.28-rc7
Linus Torvalds [Tue, 2 Dec 2008 03:59:23 +0000 (19:59 -0800)]
Linux 2.6.28-rc7

15 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Tue, 2 Dec 2008 03:56:34 +0000 (19:56 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (25 commits)
  em28xx: remove backward compat macro added on a previous fix
  V4L/DVB (9748): em28xx: fix compile warning
  V4L/DVB (9743): em28xx: fix oops audio
  V4L/DVB (9742): em28xx-alsa: implement another locking schema
  V4L/DVB (9732): sms1xxx: use new firmware for Hauppauge WinTV MiniStick
  V4L/DVB (9691): gspca: Move the video device to a separate area.
  V4L/DVB (9690): gspca: Lock the subdrivers via module_get/put.
  V4L/DVB (9689): gspca: Memory leak when disconnect while streaming.
  V4L/DVB (9668): em28xx: fix a race condition with hald
  V4L/DVB (9664): af9015: don't reconnect device in USB-bus
  V4L/DVB (9647): em28xx: void having two concurrent control URB's
  V4L/DVB (9646): em28xx: avoid allocating/dealocating memory on every control urb
  V4L/DVB (9645): em28xx: Avoid memory leaks if registration fails
  V4L/DVB (9639): Make dib0700 remote control support work with firmware v1.20
  V4L/DVB (9635): v4l: s2255drv fix firmware test on big-endian
  V4L/DVB (9634): Make sure the i2c gate is open before powering down tuner
  V4L/DVB (9632): make em28xx aux audio input work
  V4L/DVB (9631): Make s2api work for ATSC support
  V4L/DVB (9627): em28xx: Avoid i2c register error for boards without eeprom
  V4L/DVB (9608): Fix section mismatch warning for dm1105 during make
  ...

15 years agodrivers/gpu/drm/i915/i915_irq.c: fix warning
Andrew Morton [Mon, 1 Dec 2008 21:14:08 +0000 (13:14 -0800)]
drivers/gpu/drm/i915/i915_irq.c: fix warning

drivers/gpu/drm/i915/i915_irq.c: In function 'i915_disable_pipestat':
drivers/gpu/drm/i915/i915_irq.c:101: warning: control may reach end of non-void function 'i915_pipestat' being inlined

Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoi82875p_edac: fix module remove
Jarkko Lavinen [Mon, 1 Dec 2008 21:14:08 +0000 (13:14 -0800)]
i82875p_edac: fix module remove

Fix module removal bugs of i82875p_edac.  Also i82975x_edac code seems to
have the same module removal bugs as in i82875p_edac.

The problems were:

1. In module removal i82875p_remove_one() is never called.

   Variable i82875p_registered is newer changed from 1, which
   guarantees i82875p_remove_one() is not called (and even if it were
   called, it would be called in wrong order).

   As a result, the edac_mc workque is not stopped and keeps probing.
   If kernel debugging options are not enabled, user may not notice
   anything going wrong.

   if debugging options are enabled and I do "rmmod i82875p_edac", I
   get:

      edac debug: edac_pci_workq_function() checking
      BUG: unable to handle kernel paging request at f882d16f
      ...
      call trace:
       [<f8834df3>] ? edac_mc_workq_function+0x55/0x7e [edac_core]
       [<c0233974>] ? run_workqueue+0xd7/0x1a5
       [<c023392f>] ? run_workqueue+0x92/0x1a5
       [<f8834d9e>] ? edac_mc_workq_function+0x0/0x7e [edac_core]
       [<c0233af9>] ? worker_thread+0xb7/0xc3
       [<c0236a7b>] ? autoremove_wake_function+0x0/0x33
       [<c0233a42>] ? worker_thread+0x0/0xc3
       [<c0236809>] ? kthread+0x3b/0x61
       [<c02367ce>] ? kthread+0x0/0x61
       [<c0204587>] ? kernel_thread_helper+0x7/0x10

   Fix for this is to get rid of needles variable i82875p_registered
   altogether and run i82875p_remove_one() *before*
   pci_unregister_driver().

2. edac_mc_del_mc() uses mci after freeing mci

   edac_mc_del_mc() calls calls edac_remove_sysfs_mci_device().  The
   kobject refcount of mci drops to 0 and mci is freed.  After this
   mci is accessed via debug print and i82875p_remove_one() still
   uses mci->pvt and tries to free mci again with edac_mc_free().

   The fix for this is add kobject_get(&mci->edac_mci_kobj) after
   edac_mc_alloc(). Then the mci is still available after returning
   from edac_mc_del_mc() with refcount 1, and mci->pvt is still
   available. When i82875p_remove_one() finally calls edac_mc_free(),
   this will cause kobject_put() and mci is released properly.

Signed-off-by: Jarkko Lavinen <jlavi@iki.fi>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoi82875p_edac: fix overflow device resource setup
Jarkko Lavinen [Mon, 1 Dec 2008 21:14:06 +0000 (13:14 -0800)]
i82875p_edac: fix overflow device resource setup

When I do "modprobe i82875p_edac" on my Asus P4C800 MB on kernels 2.6.26
or later, the module load fails due to BAR 0 collision.  On 2.6.25 the
module loads just fine.

The overflow device on the MB seems to be hidden and its resources are not
allocated at normal PCI bus init.  Log shows the missing resource problem:

  EDAC DEBUG: i82875p_probe1()
  PCI: 0000:00:06.0 reg 10 32bit mmio: [fecf0000fecf0fff]
  pci 0000:00:06.0: device not available because of BAR 0
[0xfecf0000-0xfecf0fff] collisions
  EDAC i82875p: i82875p_setup_overfl_dev(): Failed to enable overflow
device

The patch below fixes this by calling pci_bus_assign_resources() after
the overflow device is revealed and added to the bus. With this patch
I am again able to load and use the module.

Signed-off-by: Jarkko Lavinen <jlavi@iki.fi>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofbdev: fix FB console blanking
Dmitry Baryshkov [Mon, 1 Dec 2008 21:14:05 +0000 (13:14 -0800)]
fbdev: fix FB console blanking

The commit aef7db4bd5a3b6068dfa05919a3d685199eed116 fixed the problem with
recursive locking in fb blanking code if blank is caused by user setting
the /sys/class/graphics/fb*/blank.  However this broke the fbcon timeout
blanking.

If you use a driver that defines ->fb_blank operation and at the same time
that driver relies on other driver (e.g.  backlight or lcd class) to blank
the screen, when the fbcon times out and tries to blank the fb, it will
call only fb driver blanker and won't notify the other driver.  Thus FB
output is disabled, but the screen isn't blanked.

Restore fbcon blanking and at the same time apply the proper fix for the
above problem: if fbcon_blank is called with FBINFO_FLAG_USEREVENT, we are
already called through notification from fb_blank, thus we don't have to
blank the fb again.

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agontfs: don't fool kernel-doc
Randy Dunlap [Mon, 1 Dec 2008 21:14:04 +0000 (13:14 -0800)]
ntfs: don't fool kernel-doc

kernel-doc handles macros now (it has for quite some time), so change the
ntfs_debug() macro's kernel-doc to be just before the macro instead of
before a phony function prototype.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agokernel-doc: handle varargs cleanly
Randy Dunlap [Mon, 1 Dec 2008 21:14:03 +0000 (13:14 -0800)]
kernel-doc: handle varargs cleanly

The method for listing varargs in kernel-doc notation is:
 * @...: these arguments are printed by the @fmt argument

but scripts/kernel-doc is confused:  it always lists varargs as:
... variable arguments
and ignores the @...: line's description, but then prints that
line after the list of function parameters as though it's
not part of the function parameters.

This patch makes kernel-doc print the supplied @...  description if it is
present; otherwise a boilerplate "variable arguments" is printed.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agolib/idr.c: fix rcu related race with idr_find
Manfred Spraul [Mon, 1 Dec 2008 21:14:02 +0000 (13:14 -0800)]
lib/idr.c: fix rcu related race with idr_find

2nd part of the fixes needed for
http://bugzilla.kernel.org/show_bug.cgi?id=11796.

When the idr tree is either grown or shrunk, then the update to the number
of layers and the top pointer were not atomic.  This race caused crashes.

The attached patch fixes that by replicating the layers counter in each
layer, thus idr_find doesn't need idp->layers anymore.

Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Clement Calmels <cboulte@gmail.com>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Cc: Pierre Peiffer <peifferp@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoDMA-API.txt: fix description of pci_map_sg/dma_map_sg scatterlists handling
FUJITA Tomonori [Mon, 1 Dec 2008 21:14:01 +0000 (13:14 -0800)]
DMA-API.txt: fix description of pci_map_sg/dma_map_sg scatterlists handling

- pci_map_sg/dma_map_sg are used with a scatter gather list that doesn't
  come from the block layer (e.g.  some network drivers do).

- how IOMMUs merge adjacent elements of the scatter/gather list is
  independent of how the block layer determines sees elements.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofrv: fix mmap2 error handling
David Howells [Mon, 1 Dec 2008 21:14:00 +0000 (13:14 -0800)]
frv: fix mmap2 error handling

Fix the error handling in sys_mmap2().  Currently, if the pgoff check
fails, fput() might have to be called (which it isn't), so do the pgoff
check first, before fget() is called.

Signed-off-by: David Howells <dhowells@redhat.com>
Reported-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotaint: add missing comment
Arjan van de Ven [Mon, 1 Dec 2008 21:14:00 +0000 (13:14 -0800)]
taint: add missing comment

The description for 'D' was missing in the comment...  (causing me a
minute of WTF followed by looking at more of the code)

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoradeonfb: fix problem with color expansion & alignment
Benjamin Herrenschmidt [Mon, 1 Dec 2008 21:13:58 +0000 (13:13 -0800)]
radeonfb: fix problem with color expansion & alignment

The engine on some radeon variants locks up if color expansion is called
for non aligned source data.  This patch enables a feature of the core
fbdev to request aligned input pixmaps and uses the HW clipping engine to
clip the output to the requested size

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11875

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: James Cloos <cloos@jhcloos.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: fix spi_s3c24xx_gpio num_chipselect
Ben Dooks [Mon, 1 Dec 2008 21:13:57 +0000 (13:13 -0800)]
spi: fix spi_s3c24xx_gpio num_chipselect

The spi master driver must have num_chipselect set to allow the bus to
initialise.  Pass this through the platform data.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: fix spi_s3c24xx_gpio device handle lookup
Ben Dooks [Mon, 1 Dec 2008 21:13:56 +0000 (13:13 -0800)]
spi: fix spi_s3c24xx_gpio device handle lookup

The spidev_to_sg() call in spi_s3c24xx_gpio.c was using the wrong method
to convert the spi device into the private data for the driver.  Fix this
by using spi_master_get_devdata.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: au1550_spi full duplex dma fix
Jan Nikitenko [Mon, 1 Dec 2008 21:13:56 +0000 (13:13 -0800)]
spi: au1550_spi full duplex dma fix

Fix unsafe order in dma mapping operation: always flush data from the
cache *BEFORE* invalidating it, to allow full duplex transfers where the
same buffer may be used for both writes and reads.  Tested with mmc-spi.

Signed-off-by: Jan Nikitenko <jan.nikitenko@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: fix spi_imx probe oopsing
Julien Boibessot [Mon, 1 Dec 2008 21:13:55 +0000 (13:13 -0800)]
spi: fix spi_imx probe oopsing

Corrects spi_imx driver oops during initialization/probing: can't use
drv_data before it's allocated.

Signed-off-by: Julien Boibessot <julien.boibessot@armadeus.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoepoll: introduce resource usage limits
Davide Libenzi [Mon, 1 Dec 2008 21:13:55 +0000 (13:13 -0800)]
epoll: introduce resource usage limits

It has been thought that the per-user file descriptors limit would also
limit the resources that a normal user can request via the epoll
interface.  Vegard Nossum reported a very simple program (a modified
version attached) that can make a normal user to request a pretty large
amount of kernel memory, well within the its maximum number of fds.  To
solve such problem, default limits are now imposed, and /proc based
configuration has been introduced.  A new directory has been created,
named /proc/sys/fs/epoll/ and inside there, there are two configuration
points:

  max_user_instances = Maximum number of devices - per user

  max_user_watches   = Maximum number of "watched" fds - per user

The current default for "max_user_watches" limits the memory used by epoll
to store "watches", to 1/32 of the amount of the low RAM.  As example, a
256MB 32bit machine, will have "max_user_watches" set to roughly 90000.
That should be enough to not break existing heavy epoll users.  The
default value for "max_user_instances" is set to 128, that should be
enough too.

This also changes the userspace, because a new error code can now come out
from EPOLL_CTL_ADD (-ENOSPC).  The EMFILE from epoll_create() was already
listed, so that should be ok.

[akpm@linux-foundation.org: use get_current_user()]
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: <stable@kernel.org>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Reported-by: Vegard Nossum <vegardno@ifi.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: mpc52xx_psc_spi chipselect bugfix
Stefano Babic [Mon, 1 Dec 2008 21:13:53 +0000 (13:13 -0800)]
spi: mpc52xx_psc_spi chipselect bugfix

According to the manual the "tdfOnExit" flag must be set on the last byte
we want to send.  The PSC controller holds SS low until the flag is set.

However, the flag was set always on the last byte of the FIFO,
independently if it is the last byte of the transfer.  This generates
spurious toggling of the SS signals that breaks the protocol of some
peripherals.  Fix.

Signed-off-by: Stefano Babic <sbabic@denx.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: avoid spidev crash when device is removed
Wolfgang Ocker [Mon, 1 Dec 2008 21:13:52 +0000 (13:13 -0800)]
spi: avoid spidev crash when device is removed

I saw a kernel oops in spidev_remove() when a spidev device was registered
and I unloaded the SPI master driver:

Unable to handle kernel paging request for data at address 0x00000004
Faulting instruction address: 0xc01c0c50
Oops: Kernel access of bad area, sig: 11 [#1]
CDSPR
Modules linked in: spi_ppc4xx(-)
NIP: c01c0c50 LR: c01bf9e4 CTR: c01c0c34
REGS: cec89c30 TRAP: 0300   Not tainted  (2.6.27.3izt)
MSR: 00021000 <ME>  CR: 24000228  XER: 20000007
DEAR: 00000004, ESR: 00800000
TASK = cf889040[2070] 'rmmod' THREAD: cec88000
GPR00: 00000000 cec89ce0 cf889040 cec8e000 00000004 cec8e000 ffffffff 00000000
GPR08: 0000001c c0336380 00000000 c01c0c34 00000001 1001a338 100e0000 100df49c
GPR16: 100b54c0 100df49c 100ddd20 100f05a8 100b5340 100efd68 00000000 00000000
GPR24: 100ec008 100f0428 c0327788 c0327794 cec8e0ac cec8e000 c0336380 00000000
NIP [c01c0c50] spidev_remove+0x1c/0xe4
LR [c01bf9e4] spi_drv_remove+0x2c/0x3c
Call Trace:
[cec89d00] [c01bf9e4] spi_drv_remove+0x2c/0x3c
[cec89d10] [c01859a0] __device_release_driver+0x78/0xb4
[cec89d20] [c0185ab0] device_release_driver+0x28/0x44
[cec89d40] [c0184be8] bus_remove_device+0xac/0xd8
[cec89d60] [c0183094] device_del+0x100/0x194
[cec89d80] [c0183140] device_unregister+0x18/0x30
[cec89da0] [c01bf30c] __unregister+0x20/0x34
[cec89db0] [c0182778] device_for_each_child+0x38/0x74
[cec89de0] [c01bf2d0] spi_unregister_master+0x28/0x44
[cec89e00] [c01bfeac] spi_bitbang_stop+0x1c/0x58
[cec89e20] [d908a5e0] spi_ppc4xx_of_remove+0x24/0x7c [spi_ppc4xx]
[...]

IMHO a call to spi_set_drvdata() is missing in spidev_probe(). The patch
below helped.

Signed-off-by: Wolfgang Ocker <weo@reccoware.de>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi documentation: use __initdata on struct
roel kluin [Mon, 1 Dec 2008 21:13:51 +0000 (13:13 -0800)]
spi documentation: use __initdata on struct

Use __initdata for data, not __init.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agohwmon: applesmc: make applesmc load automatically on startup
Henrik Rydberg [Mon, 1 Dec 2008 21:13:49 +0000 (13:13 -0800)]
hwmon: applesmc: make applesmc load automatically on startup

make use of the new dmi device loading support to automatically load the
applesmc driver based on the dmi_match table.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Cc: Nicolas Boichat <nicolas@boichat.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoparport_serial: fix array overflow
Takashi Iwai [Mon, 1 Dec 2008 21:13:49 +0000 (13:13 -0800)]
parport_serial: fix array overflow

The netmos_9xx5_combo type assumes that PCI SSID provides always the
correct value for the number of parallel and serial ports, but there are
indeed broken devices with wrong numbers, which may result in Oops.

This patch simply adds the check of the array range.

Reference: Novell bnc#447067
https://bugzilla.novell.com/show_bug.cgi?id=447067

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agomemcg: memory hotplug fix for notifier callback
KAMEZAWA Hiroyuki [Mon, 1 Dec 2008 21:13:48 +0000 (13:13 -0800)]
memcg: memory hotplug fix for notifier callback

Fixes for memcg/memory hotplug.

While memory hotplug allocate/free memmap, page_cgroup doesn't free
page_cgroup at OFFLINE when page_cgroup is allocated via bootomem.
(Because freeing bootmem requires special care.)

Then, if page_cgroup is allocated by bootmem and memmap is freed/allocated
by memory hotplug, page_cgroup->page == page is no longer true.

But current MEM_ONLINE handler doesn't check it and update
page_cgroup->page if it's not necessary to allocate page_cgroup.  (This
was not found because memmap is not freed if SPARSEMEM_VMEMMAP is y.)

And I noticed that MEM_ONLINE can be called against "part of section".
So, freeing page_cgroup at CANCEL_ONLINE will cause trouble.  (freeing
used page_cgroup) Don't rollback at CANCEL.

One more, current memory hotplug notifier is stopped by slub because it
sets NOTIFY_STOP_MASK to return vaule.  So, page_cgroup's callback never
be called.  (low priority than slub now.)

I think this slub's behavior is not intentional(BUG). and fixes it.

Another way to be considered about page_cgroup allocation:
  - free page_cgroup at OFFLINE even if it's from bootmem
    and remove specieal handler. But it requires more changes.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=12041

Signed-off-by: KAMEZAWA Hiruyoki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Tested-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agomm: vmalloc fix lazy unmapping cache aliasing
Nick Piggin [Mon, 1 Dec 2008 21:13:47 +0000 (13:13 -0800)]
mm: vmalloc fix lazy unmapping cache aliasing

Jim Radford has reported that the vmap subsystem rewrite was sometimes
causing his VIVT ARM system to behave strangely (seemed like going into
infinite loops trying to fault in pages to userspace).

We determined that the problem was most likely due to a cache aliasing
issue.  flush_cache_vunmap was only being called at the moment the page
tables were to be taken down, however with lazy unmapping, this can happen
after the page has subsequently been freed and allocated for something
else.  The dangling alias may still have dirty data attached to it.

The fix for this problem is to do the cache flushing when the caller has
called vunmap -- it would be a bug for them to write anything else to the
mapping at that point.

That appeared to solve Jim's problems.

Reported-by: Jim Radford <radford@blackbean.org>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfashe...
Linus Torvalds [Tue, 2 Dec 2008 02:56:55 +0000 (18:56 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/mfasheh/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  ocfs2: fix regression in ocfs2_read_blocks_sync()
  ocfs2: fix return value set in init_dlmfs_fs()
  ocfs2: Small documentation update
  ocfs2: fix wake_up in unlock_ast
  ocfs2: initialize stack_user lvbptr
  ocfs2: comments typo fix

15 years agoocfs2: fix regression in ocfs2_read_blocks_sync()
Mark Fasheh [Fri, 21 Nov 2008 22:06:55 +0000 (14:06 -0800)]
ocfs2: fix regression in ocfs2_read_blocks_sync()

We're panicing in ocfs2_read_blocks_sync() if a jbd-managed buffer is seen.
At first glance, this seems ok but in reality it can happen. My test case
was to just run 'exorcist'. A struct inode is being pushed out of memory but
is then re-read at a later time, before the buffer has been checkpointed by
jbd. This causes a BUG to be hit in ocfs2_read_blocks_sync().

Reviewed-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
15 years agoocfs2: fix return value set in init_dlmfs_fs()
Coly Li [Mon, 17 Nov 2008 04:38:22 +0000 (12:38 +0800)]
ocfs2: fix return value set in init_dlmfs_fs()

In init_dlmfs_fs(), if calling kmem_cache_create() failed, the code will use return value from
calling bdi_init(). The correct behavior should be set status as -ENOMEM before going to "bail:".

Signed-off-by: Coly Li <coyli@suse.de>
Acked-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
15 years agoocfs2: Small documentation update
Mark Fasheh [Tue, 18 Nov 2008 23:08:42 +0000 (15:08 -0800)]
ocfs2: Small documentation update

Remove some features from the "not-supported" list that are actually
supported now.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
15 years agoocfs2: fix wake_up in unlock_ast
David Teigland [Mon, 17 Nov 2008 18:28:48 +0000 (12:28 -0600)]
ocfs2: fix wake_up in unlock_ast

In ocfs2_unlock_ast(), call wake_up() on lockres before releasing
the spin lock on it.  As soon as the spin lock is released, the
lockres can be freed.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
15 years agoocfs2: initialize stack_user lvbptr
David Teigland [Mon, 10 Nov 2008 22:24:57 +0000 (16:24 -0600)]
ocfs2: initialize stack_user lvbptr

The locking_state dump, ocfs2_dlm_seq_show, reads the lvb on locks where it
has not yet been initialized by a lock call.

Signed-off-by: David Teigland <teigland@redhat.com>
Acked-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
15 years agoocfs2: comments typo fix
Coly Li [Wed, 5 Nov 2008 07:16:24 +0000 (15:16 +0800)]
ocfs2: comments typo fix

This patch fixes two typos in comments of ocfs2.

Signed-off-by: Coly Li <coyli@suse.de>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
15 years agoem28xx: remove backward compat macro added on a previous fix
Mauro Carvalho Chehab [Mon, 1 Dec 2008 20:04:14 +0000 (18:04 -0200)]
em28xx: remove backward compat macro added on a previous fix

commit 50f3beb50abe0cc0228363af804e50e710b3e5b0 fixed em28xx-alsa
locking schema. However, a backport macro was kept.

This patch removes the macro, since it is not needed for the module
compilation against upstream.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
15 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Mon, 1 Dec 2008 19:23:33 +0000 (11:23 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ
  [libata] pata_rb532_cf: fix signature of the xfer function
  [libata] pata_rb532_cf: fix and rename register definitions
  ata_piix: add borked Tecra M4 to broken suspend list

15 years agoV4L/DVB (9748): em28xx: fix compile warning
Hans Verkuil [Mon, 24 Nov 2008 12:53:22 +0000 (09:53 -0300)]
V4L/DVB (9748): em28xx: fix compile warning

Label fail_unreg is no longer used.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
15 years agoV4L/DVB (9743): em28xx: fix oops audio
Douglas Schilling Landgraf [Mon, 24 Nov 2008 12:51:20 +0000 (09:51 -0300)]
V4L/DVB (9743): em28xx: fix oops audio

Replaced usb_kill_usb for usb_unlink_usb
(wait until urb to fully stop require USB core to put the calling process to sleep).

Oops:
http://www.kerneloops.org/raw.php?rawid=71799&msgid=

Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Mon, 1 Dec 2008 19:01:54 +0000 (11:01 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mlx4: Fix MTT leakage in resize CQ
  IB/ehca: Fix problem with generated flush work completions
  IB/ehca: Change misleading error message on memory hotplug
  mlx4_core: Save/restore default port IB capability mask

15 years agolibata: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ
Tejun Heo [Thu, 27 Nov 2008 04:36:48 +0000 (13:36 +0900)]
libata: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ

Some recent Seagate harddrives have firmware bug which causes FLUSH
CACHE to timeout under certain circumstances if NCQ is being used.
This can be worked around by disabling NCQ and fixed by updating the
firmware.  Implement ATA_HORKAGE_FIRMWARE_UPDATE and blacklist these
devices.

The wiki page has been updated to contain information on this issue.

  http://ata.wiki.kernel.org/index.php/Known_issues

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
15 years ago[libata] pata_rb532_cf: fix signature of the xfer function
Phil Sutter [Fri, 28 Nov 2008 19:48:35 +0000 (20:48 +0100)]
[libata] pata_rb532_cf: fix signature of the xfer function

Per definition, this function should return the number of bytes
consumed. As the original parameter "buflen" is being decremented inside
the read/write loop, save it in "retlen" at the beginning.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Acked-by: Sergei Shtyltov <sshtylyov@ru.mvista.com>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
15 years ago[libata] pata_rb532_cf: fix and rename register definitions
Phil Sutter [Fri, 28 Nov 2008 19:48:26 +0000 (20:48 +0100)]
[libata] pata_rb532_cf: fix and rename register definitions

The original standalone driver uses a custom address for the error
register. Use it in pata_rb532_cf, too.

Rename two register definitions:
- The address offset 0x0800 in fact is the ATA base, not ATA command
  address.
- The offset 0x0C00 is not a regular ATA data address, but a buffered one
  allowing 4-byte IO.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
15 years agoata_piix: add borked Tecra M4 to broken suspend list
Tejun Heo [Sat, 29 Nov 2008 13:37:21 +0000 (22:37 +0900)]
ata_piix: add borked Tecra M4 to broken suspend list

Tecra M4 sometimes forget what it is and reports bogus data via DMI
which makes the machine evade broken suspend matching and thus fail
suspend/resume.  This patch updates piix_broken_suspend() such that it
can match such case.  As the borked DMI data is a bit generic,
matching many entries to make the match more specific is necessary.
As the usual DMI matching is limited to four entries, this patch uses
hard coded manual matching.

This is reported by Alexandru Romanescu.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Alexandru Romanescu <a_romanescu@yahoo.co.uk>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
15 years agoMerge branches 'ehca' and 'mlx4' into for-linus
Roland Dreier [Mon, 1 Dec 2008 18:11:50 +0000 (10:11 -0800)]
Merge branches 'ehca' and 'mlx4' into for-linus

15 years agoIB/mlx4: Fix MTT leakage in resize CQ
Jack Morgenstein [Mon, 1 Dec 2008 18:09:37 +0000 (10:09 -0800)]
IB/mlx4: Fix MTT leakage in resize CQ

When resizing a CQ, MTTs associated with the old CQE buffer were not
freed.  As a result, if any app used resize CQ repeatedly, all MTTs
were eventually exhausted, which led to all memory registration
operations failing until the driver is reloaded.

Once the RESIZE_CQ command returns successfully from FW, FW no longer
accesses the old CQ buffer, so it is safe to deallocate the MTT
entries used by the old CQ buffer.

Finally, if the RESIZE_CQ command fails, the MTTs allocated for the
new CQEs buffer also need to be de-allocated.

This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1416>.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
15 years agoIB/ehca: Fix problem with generated flush work completions
Stefan Roscher [Mon, 1 Dec 2008 18:05:50 +0000 (10:05 -0800)]
IB/ehca: Fix problem with generated flush work completions

This fix enables ehca device driver to generate flush work completions
even if the application doesn't request completions for all work
requests. The current implementation of ehca will generate flush work
completions for the wrong work requests if an application uses non
signaled work completions.

Signed-off-by: Stefan Roscher <stefan.roscher@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
15 years agoIB/ehca: Change misleading error message on memory hotplug
Joachim Fenkes [Mon, 1 Dec 2008 18:05:44 +0000 (10:05 -0800)]
IB/ehca: Change misleading error message on memory hotplug

The error message printed when the eHCA driver prevents memory hotplug
is misleading -- the user might think that hot-removing the lhca,
hotplugging memory, then hot-adding the lhca again will work, but it
actually doesn't.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Mon, 1 Dec 2008 17:34:23 +0000 (09:34 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  ieee1394: sbp2: fix race condition in state change
  ieee1394: fix list corruption (reported at module removal)
  firewire: fw-sbp2: another iPod mini quirk entry
  ieee1394: sbp2: another iPod mini quirk entry

15 years ago[SCSI] stex: switch to block timeout
James Bottomley [Sun, 30 Nov 2008 16:38:08 +0000 (10:38 -0600)]
[SCSI] stex: switch to block timeout

stex sets the timeout in its slave configure routine for all devices.
This now needs to update the request queue timeout in block.

Cc: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
15 years ago[SCSI] make scsi_eh_try_stu use block timeout
James Bottomley [Sun, 30 Nov 2008 16:32:26 +0000 (10:32 -0600)]
[SCSI] make scsi_eh_try_stu use block timeout

scsi_eh_try_stu() was still using the timeout parameter in the device
which is now not set (i.e. zero filled) meaning that it waited no time
at all for the start unit command to complete (leading the routine to
conclude failure every time).  This lead to a 2.6.27 regression:

http://bugzilla.kernel.org/show_bug.cgi?id=12120

Where firewire devices that were non spec compliant wouldn't spin up.

Fix this by using the block queue timeout value instead.

Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
15 years ago[SCSI] megaraid_sas: switch to block timeout
James Bottomley [Sun, 30 Nov 2008 16:27:51 +0000 (10:27 -0600)]
[SCSI] megaraid_sas: switch to block timeout

megaraid_sas sets the timeout in its slave configure routine for devices
on special channels.  This now needs to update the request queue timeout
in block.

Cc: "Yang, Bo" <Bo.Yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
15 years ago[SCSI] ibmvscsi: switch to block timeout
James Bottomley [Sun, 30 Nov 2008 16:20:37 +0000 (10:20 -0600)]
[SCSI] ibmvscsi: switch to block timeout

ibmvscsi sets the timeout in its slave configure routine for disk
devices.  This now needs to update the request queue timeout in block.

Cc: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
15 years ago[SCSI] aacraid: switch to block timeout
James Bottomley [Sun, 30 Nov 2008 16:15:37 +0000 (10:15 -0600)]
[SCSI] aacraid: switch to block timeout

aacraid updates the timeout in its slave configure routine if it is too
small.  This now needs to update the request queue timeout in block.

Cc: AACRAID list <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Mon, 1 Dec 2008 16:33:59 +0000 (08:33 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: Apple ALU wireless keyboards are bluetooth devices
  HID: remove setup mutex, fix possible deadlock
  HID: add USB ID for another dual gameron adapter
  HID: unignore mouse on unibody macbooks
  HID: fix blacklist entries for greenasia/pantherlord

15 years agoAdd kref to fake tty used by USB console
Kevin Hao [Mon, 1 Dec 2008 11:36:16 +0000 (11:36 +0000)]
Add kref to fake tty used by USB console

We alloc a fake tty in usb serial console setup function. we should
init the tty's kref otherwise we will face WARN_ON after following
invoke of tty_port_tty_set --> tty_kref_get.

Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agodrivers/char/tty_io.c: Avoid panic when no console is configured.
Will Newton [Mon, 1 Dec 2008 11:36:06 +0000 (11:36 +0000)]
drivers/char/tty_io.c: Avoid panic when no console is configured.

When no console is configured tty_open tries to call kref_get on a NULL
pointer, return ENODEV instead.

Signed-off-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years ago[SCSI] zfcp: prevent double decrement on host_busy while being busy
Swen Schillig [Thu, 27 Nov 2008 10:44:07 +0000 (11:44 +0100)]
[SCSI] zfcp: prevent double decrement on host_busy while being busy

The zfcp_scsi_queuecommand was not acting according to the standard
when the respective unit was not available. In this case an -EBUSY was
returned, which is not valid in itself, and in addition scsi_done
was called. This combination is not allowed and was leading to a
double finish of the request and therefor double decrement of the
host_busy counter.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
15 years ago[SCSI] zfcp: fix deadlock between wq triggered port scan and ERP
Swen Schillig [Wed, 26 Nov 2008 17:07:40 +0000 (18:07 +0100)]
[SCSI] zfcp: fix deadlock between wq triggered port scan and ERP

Waiting for the ERP to be finished in a task running in the global
kernel work-queue is a bad idea, especially if the ERP needs to run
another job in this work-queue before it can finish. -> deadlock.

This patch removes the necessity to wait for a finished ERP from the
scan task and moves the job scheduling to the end of the ERP.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>