Commit Graph

175230 Commits

Author SHA1 Message Date
Emil Tantilov
07ce870bed ixgbe: allow reading of SFF-8472 data over i2c
This patch adds functions needed for reading SFF-8472 diagnostic data
from SFP modules.

Based on original patch from Aurélien Guillaume <footplus@gmail.com>

CC: Aurélien Guillaume <footplus@gmail.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-05 00:47:13 -08:00
Bruce Allan
a7a1d9da29 e1000e: cleanup checkpatch braces checks
Resolve the following strict checkpatch checks:
CHECK:BRACES: Blank lines aren't necessary after an open brace '{'
CHECK:BRACES: Blank lines aren't necessary before a close brace '}'
CHECK:BRACES: braces {} should be used on all arms of this statement

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>
2013-02-05 00:37:47 -08:00
Bruce Allan
c556d6072d e1000e: convert enums of register offsets and move #defines to regs.h
There are enough register offsets to warrant being in their own header
file, and doing so logically separates them from other header file content.
They have been converted from an enumerated data type to #defines as is
done in all the other Intel wired ethernet drivers.

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>
2013-02-05 00:30:59 -08:00
Bruce Allan
948f97aca6 e1000e: cosmetic move of #defines and prototypes to the new manage.h
Move #defines, function prototypes and data types which are applicable to
all/most devices supported by the driver but are specific to the
manageability component of each device to the new manage.h header file.
These #defines, function prototypes and data types can be used by other
files in the driver and moving them to the manageability-specific file
makes it clearer to which component they are applicable.

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>
2013-02-05 00:12:27 -08:00
Bruce Allan
d22631134d e1000e: cosmetic move of #defines and function prototypes to the new nvm.h
Move #defines and function prototypes which are applicable to all/most
devices supported by the driver and are specific to the NVM component of
each device to the new nvm.h header file.  These #defines and function
prototypes can be used by other files in the driver and moving them to the
NVM-specific file makes it clearer to which component they are applicable.

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>
2013-02-05 00:05:41 -08:00
Bruce Allan
93b9f8bfd7 e1000e: cosmetic move of #defines and function prototypes to the new phy.h
Move #defines and function prototypes which are applicable to all/most
devices supported by the driver and are specific to the PHY component of
each device to the new phy.h header file.  These function prototypes can be
used by other files in the driver and moving them to the PHY-specific file
makes it clearer to which component they are applicable.

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>
2013-02-04 23:59:16 -08:00
Bruce Allan
bdfe2da6ae e1000e: cosmetic move of function prototypes to the new mac.h
Move prototypes for functions which are applicable to all/most devices
supported by the driver and are specific to the MAC component of each
device to the new mac.h header file.  These function prototypes can be used
by other files in the driver and moving them to the MAC-specific file makes
it clearer to which component they are applicable.

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>
2013-02-04 23:52:44 -08:00
Bruce Allan
1b41db37f4 e1000e: cosmetic move of #defines and prototypes to the new ich8lan.h
Move #defines and function prototypes specific to the ICH/PCH family of
devices (ICH8/82562, ICH8/82566, ICH8/82567, ICH9/82562, ICH9/82566,
ICH9/82567, ICH10/82567, 82577, 82578, 82579, I217, I218) to the new
ich8lan.h header file (the convention for Intel wired ethernet drivers is
to use the name of the first device in the family for related file and
function names).  These defines and function prototypes can be used by
other files in the driver and moving them to the ICH/PCH-family-specific
file makes it clearer to which devices they are applicable.

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>
2013-02-04 23:45:47 -08:00
Bruce Allan
21b5a6f8ff e1000e: cosmetic move of #defines to the new 80003es2lan.h
Move #defines specific to the ESB2/82563 family of devices to the new
80003es2lan.h header file.  These defines can be used by other files in the
driver and moving them to the 80003es2lan-family-specific file makes it
clearer to which devices they are applicable.

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>
2013-02-04 23:32:20 -08:00
Bruce Allan
f25701df2e e1000e: cosmetic move of #defines and prototypes to the new 82571.h
Move #defines and function prototypes specific to the 8257x family of
devices (82571, 82572, 82573, 82574, 82583) to the new 82571.h header file
(the convention for Intel wired ethernet drivers is to use the name of the
first device in the family for related file and function names).  These
defines and function prototypes can be used by other files in the driver
and moving them to the 8257x-family-specific file makes it clearer to which
devices they are applicable.

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>
2013-02-04 23:24:41 -08:00
Olof Johansson
604d11d991 Merge tag 'v3.8-rc6' into next/dt
Linux 3.8-rc6
2013-02-04 22:59:22 -08:00
Olof Johansson
71e45bd2f9 Merge tag 'drivers_for_v3.9' of git://git.infradead.org/users/jcooper/linux into next/soc
From Jason Cooper:
mvebu drivers for v3.9
 - use rtc-mv in mvebu armv7 SoCs
 - add pci-e hotplug for kirkwood

Depends on:
 - tags/mvebu_fixes_for_v3.8-rc6

* tag 'drivers_for_v3.9' of git://git.infradead.org/users/jcooper/linux:
  cpuidle: kirkwood: Move out of mach directory
  rtc: Add support of rtc-mv for MVEBU SoCs
  ARM: Kirkwood: Support basic hotplug for PCI-E
  arm: mvebu: i2c come back in defconfig
  arm: plat-orion: fix printing of "MPP config unavailable on this hardware"
  Dove: activate GPIO interrupts in DT
2013-02-04 22:56:53 -08:00
Olof Johansson
469da62096 Merge tag 'v3.8-rc6' into next/soc
Linux 3.8-rc6
2013-02-04 22:56:41 -08:00
Olof Johansson
5b399db0b7 Merge branch 'next/cleanup-header' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup
From Kukjin Kim:
AS I commented, this makes <mach/*.h> local so that they could be removed.

* 'next/cleanup-header' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (26 commits)
  ARM: S3C64XX: Fix missing header error with CONFIG_CPU_IDLE enabled
  ARM: S3C64XX: make regs-syscon-power.h local
  ARM: S3C64XX: make regs-sys.h local
  ARM: S3C64XX: make regs-srom.h local
  ARM: S3C64XX: make regs-modem.h local
  ARM: S3C64XX: make regs-gpio-memport.h local
  ARM: S3C64XX: make crag6410.h local
  ARM: S3C24XX: remove dsc.c and make regs-dsc.h local
  ARM: S3C24XX: remove idle.h
  ARM: S3C2412: cleanup regs-s3c2412.h
  ARM: S3C2416: remove regs-s3c2416-mem.h and regs-s3c2416.h
  ARM: S3C24XX: make vr1000-cpld.h, vr1000-irq.h and vr1000-map.h local
  ARM: S3C24XX: make otom-map.h local
  ARM: S3C24XX: make osiris-cpld.h and osiris-map.h local
  ARM: S3C24XX: make h1940.h and h1940-latch.h local
  ARM: S3C24XX: make gta02.h local
  ARM: S3C24XX: make bast-cpld.h, bast-irq.h and bast-map.h local
  ARM: S3C24XX: make anubis-cpld, anubis-irq and anubis-map local
  ARM: SAMSUNG: cleanup mach/gpio-fns.h gpio-track.h and gpio-nrs.h
  ARM: SAMSUNG: cleanup mach/regs-audss.h file
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-02-04 21:49:29 -08:00
Jonghwan Choi
c098ea74b2 cpufreq: exynos: Fix hang in pm handler due to frequency mismatch
When pm handler set freq & voltage, frequency mismatch occurred.
Because freqs.new isn't set in pm handler.

Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-02-04 21:01:22 -08:00
Torben Hohn
2fb318ff75 ARM: mxs: use apbx bus clock to drive the timers on timrotv2
timer resolution of ~32us is pretty low.
v2 has 32bits resolution, so we have quite some headroom, and
can use the 24MHz clock.
v1 has only 16bits, so we only increase v2.

So we just exchange the timrot clock in imx28.
On imx23 we have timrotv1 and everything stays the same.

Signed-off-by: Torben Hohn <torbenh@linutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-02-05 11:19:46 +08:00
Jitendra Kalsaria
577ae39ddb qlcnic: Updating copyright information.
We recently refactored the driver source, this patch will take care of
updating copyright date and adding it to newly added files.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 21:08:48 -05:00
Paul Gortmaker
7c1e7e99ab gianfar: dont conditionally alloc Rx/Err irq structs
Commit ee873fda3b

    "gianfar: Pack struct gfar_priv_grp into three cachelines"

causes the following null dereference at driver init on sbc8548:

   libphy: Freescale PowerQUICC MII Bus: probed
   Unable to handle kernel paging request for data at address 0x00000000
   Faulting instruction address: 0xc01d6a38
   Oops: Kernel access of bad area, sig: 11 [#1]
   [...]
   NIP [c01d6a38] gfar_parse_group+0x228/0x280
   LR [c01d6a34] gfar_parse_group+0x224/0x280
   Call Trace:
   [ef82dd60] [c01d6a34] gfar_parse_group+0x224/0x280 (unreliable)
   [ef82dd90] [c01d73a4] gfar_probe+0x284/0xfe0

The reason is that the commit also changed the allocation of the
Rx and error handling irq structs to be skipped for !MQ_MG_MODE.
In the !MQ_MG_MODE case, only the Tx irq struct is allocated.

Digging further, we see that MQ_MG_MODE is set only if we find
the OF compatible string "fsl,etsec2".

A quick grep in the dts directory shows lots of boards that support
Rx/Tx/Err, but without this specific compat string.  And hence they
go after the unallocated Rx/Error structs and cause the above oops.

Hence such a change can not be deployed until all the dts files
are updated and sufficiently deployed.  Further, the optimization
is of limited value, since the kmalloc'd struct in question has only
a single unsigned int, and an (IFNAMSIZ + 6) sized string.

Note that no changes to the freeing code are needed here, as it
already did an unconditional free of Rx/Tx/Error gfar_irqinfo.

Cc: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 21:08:01 -05:00
Peter Hurley
80cace7256 pty: Ignore slave open count for master pty open
Multiple slave pty opens may be performed in parallel with the
master open. Of course, all the slave opens will fail because the
master pty is still locked but during this time the slave pty
count will be artificially greater than 1. This is should not
cause the master pty open to fail.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 15:40:29 -08:00
Peter Hurley
699390354d pty: Ignore slave pty close() if never successfully opened
If the master and slave ptys are opened in parallel, the slave open
fails because the pty is still locked. This is as designed.
However, pty_close() is still called for the slave pty which sets
TTY_OTHER_CLOSED in the master pty. This can cause the master open
to fail as well.

Use a common pattern in other tty drivers by setting TTY_IO_ERROR
until the open is successful and only closing the pty if not set.

Note: the master pty always closes regardless of whether the open
was successful, so that proper cleanup can occur.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 15:40:28 -08:00
Peter Hurley
7acf6cd80b pty: Fix BUG()s when ptmx_open() errors out
If pmtx_open() fails to get a slave inode or fails the pty_open(),
the tty is released as part of the error cleanup. As evidenced by the
first BUG stacktrace below, pty_close() assumes that the linked pty has
a valid, initialized inode* stored in driver_data.

Also, as evidenced by the second BUG stacktrace below, pty_unix98_shutdown()
assumes that the master pty's driver_data has been initialized.

1) Fix the invalid assumption in pty_close().
2) Initialize driver_data immediately so proper devpts fs cleanup occurs.

Fixes this BUG:

[  815.868844] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[  815.869018] IP: [<ffffffff81207bcc>] devpts_pty_kill+0x1c/0xa0
[  815.869190] PGD 7c775067 PUD 79deb067 PMD 0
[  815.869315] Oops: 0000 [#1] PREEMPT SMP
[  815.869443] Modules linked in: kvm_intel kvm snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi microcode snd_rawmidi psmouse serio_raw snd_seq_midi_event snd_seq snd_timer$
[  815.870025] CPU 0
[  815.870143] Pid: 27819, comm: stress_test_tty Tainted: G        W    3.8.0-next-20130125+ttypatch-2-xeon #2 Bochs Bochs
[  815.870386] RIP: 0010:[<ffffffff81207bcc>]  [<ffffffff81207bcc>] devpts_pty_kill+0x1c/0xa0
[  815.870540] RSP: 0018:ffff88007d3e1ac8  EFLAGS: 00010282
[  815.870661] RAX: ffff880079c20800 RBX: 0000000000000000 RCX: 0000000000000000
[  815.870804] RDX: ffff880079c209a8 RSI: 0000000000000286 RDI: 0000000000000000
[  815.870933] RBP: ffff88007d3e1ae8 R08: 0000000000000000 R09: 0000000000000000
[  815.871078] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88007bfb7e00
[  815.871209] R13: 0000000000000005 R14: ffff880079c20c00 R15: ffff880079c20c00
[  815.871343] FS:  00007f2e86206700(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000
[  815.871495] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  815.871617] CR2: 0000000000000028 CR3: 000000007ae56000 CR4: 00000000000006f0
[  815.871752] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  815.871902] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  815.872012] Process stress_test_tty (pid: 27819, threadinfo ffff88007d3e0000, task ffff88007c874530)
[  815.872012] Stack:
[  815.872012]  ffff88007bfb7e00 ffff880079c20c00 ffff88007bfb7e00 0000000000000005
[  815.872012]  ffff88007d3e1b08 ffffffff81417be7 ffff88007caa9bd8 ffff880079c20800
[  815.872012]  ffff88007d3e1bc8 ffffffff8140e5f8 0000000000000000 0000000000000000
[  815.872012] Call Trace:
[  815.872012]  [<ffffffff81417be7>] pty_close+0x157/0x170
[  815.872012]  [<ffffffff8140e5f8>] tty_release+0x138/0x580
[  815.872012]  [<ffffffff816d29f3>] ? _raw_spin_lock+0x23/0x30
[  815.872012]  [<ffffffff816d267a>] ? _raw_spin_unlock+0x1a/0x40
[  815.872012]  [<ffffffff816d0178>] ? __mutex_unlock_slowpath+0x48/0x60
[  815.872012]  [<ffffffff81417dff>] ptmx_open+0x11f/0x180
[  815.872012]  [<ffffffff8119394b>] chrdev_open+0x9b/0x1c0
[  815.872012]  [<ffffffff8118d643>] do_dentry_open+0x203/0x290
[  815.872012]  [<ffffffff811938b0>] ? cdev_put+0x30/0x30
[  815.872012]  [<ffffffff8118d705>] finish_open+0x35/0x50
[  815.872012]  [<ffffffff8119dcce>] do_last+0x6fe/0xe90
[  815.872012]  [<ffffffff8119a7af>] ? link_path_walk+0x7f/0x880
[  815.872012]  [<ffffffff810909d5>] ? cpuacct_charge+0x75/0x80
[  815.872012]  [<ffffffff8119e51c>] path_openat+0xbc/0x4e0
[  815.872012]  [<ffffffff816d0fd0>] ? __schedule+0x400/0x7f0
[  815.872012]  [<ffffffff8140e956>] ? tty_release+0x496/0x580
[  815.872012]  [<ffffffff8119ec11>] do_filp_open+0x41/0xa0
[  815.872012]  [<ffffffff816d267a>] ? _raw_spin_unlock+0x1a/0x40
[  815.872012]  [<ffffffff811abe39>] ? __alloc_fd+0xe9/0x140
[  815.872012]  [<ffffffff8118ea44>] do_sys_open+0xf4/0x1e0
[  815.872012]  [<ffffffff8118eb51>] sys_open+0x21/0x30
[  815.872012]  [<ffffffff816da499>] system_call_fastpath+0x16/0x1b
[  815.872012] Code: 0f 1f 80 00 00 00 00 45 31 e4 eb d7 0f 0b 90 0f 1f 44 00 00 55 48 89 e5 48 83 ec 20 48 89 5d e8 48 89 fb 4c 89 65 f0 4c 89 6d f8 <48> 8b 47 28 48 81 78 58 d1 1c 0$
[  815.872012] RIP  [<ffffffff81207bcc>] devpts_pty_kill+0x1c/0xa0
[  815.872012]  RSP <ffff88007d3e1ac8>
[  815.872012] CR2: 0000000000000028
[  815.897036] ---[ end trace eadf50b7f34e47d5 ]---

Fixes this BUG also:

[  608.366836] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[  608.366948] IP: [<ffffffff812078d8>] devpts_kill_index+0x18/0x70
[  608.367050] PGD 7c75b067 PUD 7b919067 PMD 0
[  608.367135] Oops: 0000 [#1] PREEMPT SMP
[  608.367201] Modules linked in: kvm_intel kvm snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event microcode snd_seq psmouse snd_timer snd_seq_device serio_raw snd mac_hid soundcore snd_page_alloc rfcomm virtio_balloon parport_pc bnep bluetooth ppdev i2c_piix4 lp parport floppy
[  608.367617] CPU 2
[  608.367669] Pid: 1918, comm: stress_test_tty Tainted: G        W    3.8.0-next-20130125+ttypatch-2-xeon #2 Bochs Bochs
[  608.367796] RIP: 0010:[<ffffffff812078d8>]  [<ffffffff812078d8>] devpts_kill_index+0x18/0x70
[  608.367885] RSP: 0018:ffff88007ae41a88  EFLAGS: 00010286
[  608.367951] RAX: ffffffff81417e80 RBX: ffff880036472400 RCX: 0000000180400028
[  608.368010] RDX: ffff880036470004 RSI: 0000000000000004 RDI: 0000000000000000
[  608.368010] RBP: ffff88007ae41a98 R08: 0000000000000000 R09: 0000000000000001
[  608.368010] R10: ffffea0001f22e40 R11: ffffffff814151d5 R12: 0000000000000004
[  608.368010] R13: ffff880036470000 R14: 0000000000000004 R15: ffff880036472400
[  608.368010] FS:  00007ff7a5268700(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000
[  608.368010] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  608.368010] CR2: 0000000000000028 CR3: 000000007a0fd000 CR4: 00000000000006e0
[  608.368010] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  608.368010] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  608.368010] Process stress_test_tty (pid: 1918, threadinfo ffff88007ae40000, task ffff88003688dc40)
[  608.368010] Stack:
[  608.368010]  ffff880036472400 0000000000000001 ffff88007ae41aa8 ffffffff81417e98
[  608.368010]  ffff88007ae41ac8 ffffffff8140c42b ffff88007ac73100 ffff88007ac73100
[  608.368010]  ffff88007ae41b98 ffffffff8140ead5 ffff88007ae41b38 ffff88007ca40e40
[  608.368010] Call Trace:
[  608.368010]  [<ffffffff81417e98>] pty_unix98_shutdown+0x18/0x20
[  608.368010]  [<ffffffff8140c42b>] release_tty+0x3b/0xe0
[  608.368010]  [<ffffffff8140ead5>] __tty_release+0x575/0x5d0
[  608.368010]  [<ffffffff816d2c63>] ? _raw_spin_lock+0x23/0x30
[  608.368010]  [<ffffffff816d28ea>] ? _raw_spin_unlock+0x1a/0x40
[  608.368010]  [<ffffffff816d03e8>] ? __mutex_unlock_slowpath+0x48/0x60
[  608.368010]  [<ffffffff8140ef79>] tty_open+0x449/0x5f0
[  608.368010]  [<ffffffff8119394b>] chrdev_open+0x9b/0x1c0
[  608.368010]  [<ffffffff8118d643>] do_dentry_open+0x203/0x290
[  608.368010]  [<ffffffff811938b0>] ? cdev_put+0x30/0x30
[  608.368010]  [<ffffffff8118d705>] finish_open+0x35/0x50
[  608.368010]  [<ffffffff8119dcce>] do_last+0x6fe/0xe90
[  608.368010]  [<ffffffff8119a7af>] ? link_path_walk+0x7f/0x880
[  608.368010]  [<ffffffff8119e51c>] path_openat+0xbc/0x4e0
[  608.368010]  [<ffffffff8119ec11>] do_filp_open+0x41/0xa0
[  608.368010]  [<ffffffff816d28ea>] ? _raw_spin_unlock+0x1a/0x40
[  608.368010]  [<ffffffff811abe39>] ? __alloc_fd+0xe9/0x140
[  608.368010]  [<ffffffff8118ea44>] do_sys_open+0xf4/0x1e0
[  608.368010]  [<ffffffff816d2c63>] ? _raw_spin_lock+0x23/0x30
[  608.368010]  [<ffffffff8118eb51>] sys_open+0x21/0x30
[  608.368010]  [<ffffffff816da719>] system_call_fastpath+0x16/0x1b
[  608.368010] Code: ec 48 83 c4 10 5b 41 5c 5d c3 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 48 83 ec 10 4c 89 65 f8 41 89 f4 48 89 5d f0 <48> 8b 47 28 48 81 78 58 d1 1c 00 00 74 0b 48 8b 05 4b 66 cf 00
[  608.368010] RIP  [<ffffffff812078d8>] devpts_kill_index+0x18/0x70
[  608.368010]  RSP <ffff88007ae41a88>
[  608.368010] CR2: 0000000000000028
[  608.394153] ---[ end trace afe83b0fb5fbda93 ]---

Reported-by: Ilya Zykov <ilya@ilyx.ru>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 15:40:28 -08:00
Greg Kroah-Hartman
16559ae48c kgdb: remove #include <linux/serial_8250.h> from kgdb.h
There's no reason kgdb.h itself needs to include the 8250 serial port
header file.  So push it down to the _very_ limited number of individual
drivers that need the values in that file, and fix up the places where
people really wanted serial_core.h and platform_device.h.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 15:35:26 -08:00
Ivo Sieben
98001214c0 tty: Use raw spin lock to protect the TTY read section
The "normal" spin lock that guards the N_TTY line discipline read section
is replaced by a raw spin lock.

On a PREEMP_RT system this prevents unwanted scheduling overhead when data is
read at the same time as data is being received: while RX IRQ threaded handling
is busy a TTY read call is performed from a RT priority > threaded IRQ priority.
The read call tries to take the read section spin lock (held by the threaded
IRQ) which blocks and causes a context switch to/from the threaded IRQ handler
until the spin lock is unlocked.

Signed-off-by: Ivo Sieben <meltedpianoman@gmail.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 15:05:04 -08:00
Oleg Nesterov
183d95cdd8 tty: set_termios/set_termiox should not return -EINTR
See https://bugzilla.redhat.com/show_bug.cgi?id=904907
read command causes bash to abort with double free or corruption (out).

A simple test-case from Roman:

	// Compile the reproducer and send sigchld ti that process.
	// EINTR occurs even if SA_RESTART flag is set.

	void handler(int sig)
	{
	}

	main()
	{
	  struct sigaction act;
	  act.sa_handler = handler;
	  act.sa_flags = SA_RESTART;
	  sigaction (SIGCHLD, &act, 0);
	  struct termio ttp;
	  ioctl(0, TCGETA, &ttp);
	  while(1)
	  {
	    if (ioctl(0, TCSETAW, ttp) < 0)
	      {
		if (errno == EINTR)
		{
		  fprintf(stderr, "BUG!"); return(1);
		}
	      }
	  }
	}

Change set_termios/set_termiox to return -ERESTARTSYS to fix this
particular problem.

I didn't dare to change other EINTR's in drivers/tty/, but they look
equally wrong.

Reported-by: Roman Rakus <rrakus@redhat.com>
Reported-by: Lingzhu Xiang <lxiang@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 15:02:14 -08:00
H Hartley Sweeten
5056d87a88 staging: comedi: ni_daq_700: use comedi_pcmcia_disable() for (*detach)
The (*detach) function, daq700_detach() is now a simple wrapper around
comedi_pcmcia_disable(). Just use comedi_pcmcia_disable() directly for
the (*detach).

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 14:47:19 -08:00
H Hartley Sweeten
7dc99109f5 staging: comedi: ni_daq_700: use comedi_pcmcia_{enable, disable}
Use the comedi_pcmcia_{enable,disable} helpers to enable/disable
the PCMCIA device.

This driver does not use interrupts and is not an audio device,
remove CONF_ENABLE_IRQ and CONF_AUTO_AUDIO from the link->config_flags.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 14:47:19 -08:00
H Hartley Sweeten
95f932cea3 staging: comedi: das08_cs: use comedi_pcmcia_{enable, disable}
Use the comedi_pcmcia_{enable,disable} helpers to enable/disable
the PCMCIA device.

This driver does not use interrupts so remove CONF_ENABLE_IRQ from
the link->config_flags.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 14:47:19 -08:00
H Hartley Sweeten
7fadd565f0 staging: comedi: cb_das16_cs: use comedi_pcmcia_disable() for (*detach)
The (*detach) function, das16cs_detach() is a simple wrapper around
comedi_pcmcia_disable(). Just use comedi_pcmcia_disable() directly
for the (*detach).

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 14:47:19 -08:00
H Hartley Sweeten
bcd22e8ece staging: comedi: cb_das16_cs: use pcmcia_request_irq()
Use pcmcia_request_irq() instead of request_irq() to request the
irq for the PCMCIA device. This allows the PCMCIA core to clean
up the registration in pcmcia_disable_device().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 14:47:19 -08:00
H Hartley Sweeten
9e29ce104a staging: comedi: cb_das16_cs: use comedi_pcmcia_{enable, disable}
Use the comedi_pcmcia_{enable,disable} helpers to enable/disable
the PCMCIA device.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 14:47:18 -08:00
H Hartley Sweeten
ddb2d0a018 staging: comedi: comedi_pcmcia: introduce comedi_pcmcia_{enable, disable}
Introduce some helper functions to enable/disable the PCMCIA device.
This will allow removing some of the boilerplate code in the comedi
PCMCIA drivers.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 14:47:18 -08:00
Arend van Spriel
7b2385b953 brcmsmac: rework of mac80211 .flush() callback operation
This patch addresses a long standing issue of the driver with the
mac80211 .flush() callback. Since implementing the .flush() callback
a number of issues have been fixed, but a WARN_ON_ONCE() was still
triggered because the timeout on the flush could still occur.

This patch changes the awkward design using msleep() into one using
a waitqueue. The waiting flush() context will kick the transmit dma
when it is idle and the timeout used waiting for the event is set
to 500 ms. Worst case there can be 64 frames outstanding for transmit
in the driver. At a rate of 1Mbps that would take 1.5 seconds assuming
MTU is 1500 bytes and ignoring retries. The WARN_ON_ONCE() is also
removed as this was put in to indicate the flush timeout as a reason
for the driver to stall. That was not happening since fixing endless
AMPDU retries with following upstream commit:

commit 85091fc0a7
Author: Arend van Spriel <arend@broadcom.com>
Date:   Thu Feb 23 18:38:22 2012 +0100

    brcm80211: smac: fix endless retry of A-MPDU transmissions

bugzilla: 42840 <https://bugzilla.kernel.org/show_bug.cgi?id=42840>
bugzilla@redhat: <https://bugzilla.redhat.com/show_bug.cgi?id=799168>
bugzilla@redhat: <https://bugzilla.redhat.com/show_bug.cgi?id=787649>

Cc: Jonathan Nieder <jrnieder@gmail.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Camaleón <noelamac@gmail.com>
Cc: Milan Bouchet-Valat <nalimilan@club-internet.fr>
Cc: Seth Forshee <seth.forshee@canonical.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-04 16:46:28 -05:00
Hauke Mehrtens
600485edae ssb: unregister gpios before unloading ssb
This patch unregisters the gpio chip before ssb gets unloaded.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-04 16:46:24 -05:00
Hauke Mehrtens
c50ae9470e bcma: unregister gpios before unloading bcma
This patch unregisters the gpio chip before bcma gets unloaded.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reported-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-04 16:46:24 -05:00
Larry Finger
a5ffbe0a19 rtlwifi: Fix scheduling while atomic bug
Kernel commits 41affd5 and 6539306 changed the locking in rtl_lps_leave()
from a spinlock to a mutex by doing the calls indirectly from a work queue
to reduce the time that interrupts were disabled. This change was fine for
most systems; however a scheduling while atomic bug was reported in
https://bugzilla.redhat.com/show_bug.cgi?id=903881. The backtrace indicates
that routine rtl_is_special(), which calls rtl_lps_leave() in three places
was entered in atomic context. These direct calls are replaced by putting a
request on the appropriate work queue.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-and-tested-by: Nathaniel Doherty <ntdoherty@gmail.com>
Cc: Nathaniel Doherty <ntdoherty@gmail.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-04 16:41:56 -05:00
Linus Torvalds
d92dd35920 Merge tag 'for-linus-20130204' of git://git.infradead.org/linux-mtd
Pull MTD fixes from David Woodhouse:
 "A small set of simple regression and build fixes for 3.8:
   - Fix a warning introduced in ONFI NAND probe
   - Fix commandline partition parsing
   - Require BITREVERSE for DiskOnChip G3 driver
   - Fix build failure for davinci_nand as module
   - Bump NFLASH_READY_RETRIES for bcm47xxnflash"

* tag 'for-linus-20130204' of git://git.infradead.org/linux-mtd:
  mtd: nand: onfi don't WARN if we are in 16 bits mode
  mtd: physmap_of: fix cmdline partition method w/o linux, mtd-name
  mtd: docg3 fix missing bitreverse lib
  mtd: davinci_nand: fix modular build with CONFIG_OF=y
  mtd: bcm47xxnflash: increase NFLASH_READY_RETRIES
2013-02-05 07:54:11 +11:00
Alexandre Courbot
476171ce78 gpiolib: add missing braces in gpio_direction_show
Add missing braces in an if..else condition.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-04 21:46:56 +01:00
Mathias Nyman
1107ca104f gpiolib-acpi: Fix error checks in interrupt requesting
Print error message if requesting an interrupt fails.
Use int instead of unsigned for interrupts in case of error values

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-04 21:41:47 +01:00
Anatolij Gustschin
de0ccf7881 gpio: mpc8xxx: don't set IRQ_TYPE_NONE when creating irq mapping
Exporting gpios over sysfs GPIO interface throws genirq
error messages, i.e. on an mpc5121 based board exporting
GPIO 5 triggers it:

    # echo 229 > /sys/class/gpio/export
    genirq: Setting trigger mode 0 for irq 44 failed
    (mpc512x_irq_set_type+0x0/0x18c)

Similar error messages appear in the kernel boot log since the
board specifies GPIOs for matrix keypad and also SD Card write
protect and card detect GPIOs in its device tree. For all these
GPIOs there is an error message in the log.

The issue is triggered by setting the irq type to IRQ_TYPE_NONE
in the driver's irq_domain map function mpc8xxx_gpio_irq_map().

...
  mpc8xxx_gpio_irq_map
    irq_set_irq_type
      __irq_set_trigger

__irq_set_trigger() calls irq_set_type() callback of the mpc8xxx gpio
irq chip with the IRQ_TYPE_NONE in its 'flags' argument. This callback
is either mpc8xxx_irq_set_type() or mpc512x_irq_set_type(). Both these
functions return -EINVAL in the case if IRQ_TYPE_NONE is passed in the
flow_type argument. This return value triggers the observed error
message in __irq_set_trigger(). Modifying these callbacks to not
return an error in IRQ_TYPE_NONE case doesn't make any sense to me.
The line setting IRQ_TYPE_NONE type has been originally added by
commit 345e5c8a "powerpc: Add interrupt support to mpc8xxx_gpio".
At this time set_irq_type() checked its type argument and returned 0
if the type argument didn't specify any meaningful type in its type
sense bits (and thus was equal to IRQ_TYPE_NONE). Effectively this
line was a nop and I wonder what was the point of adding it.

Remove IRQ_TYPE_NONE setting in the irq_domain mapping function.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-04 21:41:46 +01:00
Alexandre Courbot
710b40eac4 gpiolib: remove gpiochip_reserve()
gpiochip_reserve() has no user and stands in the way of the removal of
the static gpio_desc[] array. Remove this function as well as the now
unneeded RESERVED flag of struct gpio_desc.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-04 21:41:46 +01:00
Frank Li
7d3e673f2e net: fec: fix miss init spinlock
BUG: spinlock bad magic on CPU#1, swapper/0/1
lock: 0xbfae0f8c, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
Backtrace:
 [<80011d54>] (dump_backtrace+0x0/0x10c) from [<804e7800>] (dump_stack+0x18/0x1c)
 r6:bfae0000 r5:bfae0f8c r4:00000000 r3:806c1310
 [<804e77e8>] (dump_stack+0x0/0x1c) from [<804e9f20>] (spin_dump+0x80/0x94)
 [<804e9ea0>] (spin_dump+0x0/0x94) from [<804e9f60>] (spin_bug+0x2c/0x30)
 r5:805f6f8c r4:bfae0f8c
 [<804e9f34>] (spin_bug+0x0/0x30) from [<80257984>] (do_raw_spin_lock+0x170/0x1b0                                         )
 r5:806b4950 r4:bfae0f8c
 [<80257814>] (do_raw_spin_lock+0x0/0x1b0) from [<804ed15c>] (_raw_spin_lock_irqs                                         ave+0x18/0x20)
 [<804ed144>] (_raw_spin_lock_irqsave+0x0/0x20) from [<8033c694>] (fec_ptp_start_                                         cyclecounter+0x3c/0x120)
 r4:bfae0f8c r3:00000002
 [<8033c658>] (fec_ptp_start_cyclecounter+0x0/0x120) from [<80339e08>] (fec_resta                                         rt+0x56c/0x5f8)
 r8:00000000 r7:806e6f48 r6:00000112 r5:806b4950 r4:bfae0000
 [<8033989c>] (fec_restart+0x0/0x5f8) from [<8033b9e4>] (fec_probe+0x508/0xa48)

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 15:03:46 -05:00
Jiri Pirko
675b8044e1 team: ab: set active port option as changed when port is leaving
In case port is leaving the team, set the option "activeport" as changed
so the change can be properly propagated to userspace

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 14:55:45 -05:00
Jiri Pirko
c3969d80a3 team: move netlink event notifiers after team_port_leave()
In team_port_del(), there is need to be do all the cleanup related
things first and netlink event notifiers should be called after that.
This fixes two problems:
team carrier is now correctly set (port is removed from list first)
mode can set option as changed in .port_leave op

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 14:55:45 -05:00
Jiri Pirko
d90f889e9c team: handle sending port list in the same way option list is sent
Essentially do the same thing with port list as with option list.
Multipart netlink message.
Side effect is that port event message can send port which is not longer
in team->port_list.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 14:55:45 -05:00
Mark Brown
4c47c2b0f8 Merge tag 'async' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into asoc-adsp
regmap: Add async I/O support

Allow drivers to take advantage of any support the underlying transports
may have for pipelining data.
2013-02-04 19:52:17 +00:00
Peter Huewe
e44adfdb67 staging/xgifb: Simplify XGISetModeNew
This patch simplifies the code of XGISetModeNew by reordering the
if/else if/case conditions when both branches are doing exactly the
same.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 10:46:28 -08:00
Peter Huewe
06cc47b90b staging/xgifb: Consolidate XGI_EnableChISLCD and XGI_DisableChISLCD
These two functions share the same code except one line - thus we can
simply merge them and add a parameter to switch between both variants.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 10:46:28 -08:00
Peter Huewe
5d1c2a9b28 staging/xgifb: Remove unnecessary bitshifts in XGI_SetCRT1ModeRegs
Since data can only be 0x0000, 0x0035 or 0x0048 we can simply skip the
bit shifting and masking as data & 0xFF is always equal to data and
data & 0xFF00 is always 0.
So we simply use data and 0 directly and save the assignment.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 10:46:28 -08:00
Peter Huewe
a5e080b83e staging/xgifb: remove unnecessary temp variable in XGIfb_mode_rate_to_ddata
Instead of subtracting one and then assign a different name and add 1
again we simply use HDE directly. HDE wasn't used directly before, so no
change in functionality.
Same applies to VDE.

-> now we can remove the variable with the very descriptive name E ;)

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 10:46:27 -08:00
Peter Huewe
bae31702cd staging/xgifb: rewrite XGIfb_get_cmap_len
We don't need to use this switch-case here for a simple two case
if-else.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04 10:46:27 -08:00