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We want the tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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-> The ledptrs[] array is never initialized.
-> There is no place where kbd->ledmode is set to LED_SHOW_MEM therefore the if
statement does not make much sense.
-> Since LED_SHOW_MEM is not used, it can be removed from the header file as well.
Signed-off-by: Andreas Platschek <andi.platschek@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These two defines are no longer used. They were only used by the PCI
serial driver "8250_pci" to support the original ADDI-DATA APCI-7800
card. In that driver, PCI_VENDOR_ID_ADDIDATA_OLD has been replaced with
PCI_VENDOR_ID_AMCC which has the same value (0x10e8), and
PCI_DEVICE_ID_ADDIDATA_APCI7800 has been replaced with a local #define
PCI_DEVICE_ID_AMCC_ADDIDATA_APCI7800 with the same value (0x818e).
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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PCI_VENDOR_ID_AMCC is defined locally in
"drivers/staging/comedi/comedidev.h" for a few comedi hardware drivers,
namely "adl_pci9118", "addi_apci_1500" and "addi_apci_3120" (also
"addi_apci_1710" but that is not currently built and will probably be
removed soon). Move the define into "include/linux/pci_ids.h" as it is
shared by several drivers (albeit all comedi drivers currently).
PCI_VENDOR_ID_AMCC happens to have the same value (0x10e8) as
PCI_VENDOR_ID_ADDIDATA_OLD. The vendor ID is actually assigned to
Applied Micro Circuits Corporation and Addi-Data were using device IDs
assigned by AMCC on some of their earlier PCI boards. The
PCI_VENDOR_ID_ADDIDATA_OLD define is still being used by the "8250_pci"
PCI serial board driver.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds support for MAX14830 (advanced quad universal asynchronous
receiver-transmitter) into max310x driver.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds support for MAX3109 (advanced dual universal asynchronous
receiver-transmitter) into max310x driver.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch rework max310x driver.
Major changes have been made:
- Prepare driver to support ICs with more than one UART.
- Prepare driver to support work with I2C-bus.
The patch changes almost every function and can not be divided into parts.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These are just two fixes, a revert of the would-be backlight fix that
didn't work and an intel_pstate fix for two problems related to
maximum P-state selection.
Specifics:
- Revert of the ACPI video commit that I hoped would help fix
backlight problems related to Windows 8 compatibility on some
systems. Unfortunately, it turned out to cause problems to happen
too.
- Fix for two problems in intel_pstate, a possible failure to respond
to a load change on a quiet system and a possible failure to select
the highest available P-state on some systems. From Dirk
Brandewie"
* tag 'pm+acpi-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPI / video / i915: No ACPI backlight if firmware expects Windows 8"
cpufreq / intel_pstate: Change to scale off of max P-state
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"This is a largeish batch of fixes, mostly because I missed -rc2 due to
travel/vacation. So in number these are a bit more than ideal unless
you amortize them over two -rcs.
Quick breakdown:
- Defconfig updates
- Making multi_v7_defconfig useful on more hardware to encourage
single-image usage
- Davinci and nomadik updates due to new code merged this merge
window
- Fixes for UART on Samsung platforms, both PM and clock-related
- A handful of warning fixes from defconfig builds, including for
max8925 backlight and pxamci (both with appropriate acks)
- Exynos5440 fixes for LPAE configuration, PM
- ...plus a bunch of other smaller changes all over the place
I expect to switch to regressions-or-severe-bugs-only fixes from here
on out"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
mfd: max8925: fix dt code for backlight
ARM: omap5: Only select errata 798181 if SMP
ARM: EXYNOS: Update CONFIG_ARCH_NR_GPIO for Exynos
ARM: EXYNOS: Fix low level debug support
ARM: SAMSUNG: Save/restore only selected uart's registers
ARM: SAMSUNG: Add SAMSUNG_PM config option to select pm
ARM: S3C24XX: Add missing clkdev entries for s3c2440 UART
ARM: multi_v7_defconfig: Select USB chipidea driver
ARM: pxa: propagate errors from regulator_enable() to pxamci
ARM: zynq: fix compilation warning
ARM: keystone: fix compilation warning
ARM: highbank: Only touch common coherency control register fields
ARM: footbridge: fix overlapping PCI mappings
dmaengine: shdma: fix a build failure on platforms with no DMA support
ARM: STi: Set correct ARM ERRATAs.
ARM: dts: STi: Fix pinconf setup for STiH416 serial2
ARM: nomadik: configure for NO_HZ and HRTIMERS
ARM: nomadik: update defconfig base
ARM: nomadik: Update MMC defconfigs
ARM: davinci: defconfig: enable EDMA driver
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of USB fixes for 3.11-rc3.
Lots of little things, nothing major. A number of new device ids,
build fixes for DMA, and a bunch of other minor things. All of these
have been in the linux-next tree"
* tag 'usb-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (40 commits)
usb: Clear both buffers when clearing a control transfer TT buffer.
usb/gadget: free opts struct on error recovery
USB: mos7840: fix memory leak in open
usb: serial: option.c: remove ONDA MT825UP product ID fromdriver
usb: serial: option: add Olivetti Olicard 200
usb: serial: option: blacklist ONDA MT689DC QMI interface
xhci: fix null pointer dereference on ring_doorbell_for_active_rings
usb: host: xhci: Enable XHCI_SPURIOUS_SUCCESS for all controllers with xhci 1.0
usb: fix build warning in pci-quirks.h when CONFIG_PCI is not enabled
usb: xhci: Mark two functions __maybe_unused
xhci: Avoid NULL pointer deref when host dies.
usb: serial: option: Add ONYX 3G device support
USB: ti_usb_3410_5052: fix dynamic-id matching
usb: option: add TP-LINK MA260
USB: option: add D-Link DWM-152/C1 and DWM-156/C1
USB: EHCI: Fix resume signalling on remote wakeup
USB: cp210x: add MMB and PI ZigBee USB Device Support
usb: cp210x support SEL C662 Vendor/Device
USB: option: append Petatel NP10T device to GSM modems list
USB: misc: Add Manhattan Hi-Speed USB DVI Converter to sisusbvga
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
"Assorted libata updates.
The most critical one is a fix for ahci oops during boot. Also, a new
smallish platform ahci driver is added and sata_inic162x is marked
clearly as experimental (it whines during boot too) as data corruption
seems rather common on the device and it's unlikely to get any love in
the foreseeable future. If the whining doesn't draw any attention, I
think we'd probably be better of making the driver depend on BROKEN in
a couple releases"
This is v2 of this pull request with fixed dependencies for ahci_imx.
* 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ahci_imx: depend on CONFIG_MFD_SYSCON
ahci_imx: add ahci sata support on imx platforms
ARM: imx6q: update the sata bits definitions of gpr13
ahci: fix Null pointer dereference in achi_host_active()
libata: make it clear that sata_inic162x is experimental
libata: replace strict_strtol() with kstrtol()
ata: Fix DVD not dectected at some platform with Wellsburg PCH
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We attempted to address a regression introduced by commit a57f7f9
(ACPICA: Add Windows8/Server2012 string for _OSI method.) after which
ACPI video backlight support doesn't work on a number of systems,
because the relevant AML methods in the ACPI tables in their BIOSes
become useless after the BIOS has been told that the OS is compatible
with Windows 8. That problem is tracked by the bug entry at:
https://bugzilla.kernel.org/show_bug.cgi?id=51231
Commit 8c5bd7a (ACPI / video / i915: No ACPI backlight if firmware
expects Windows 8) introduced for this purpose essentially prevented
the ACPI backlight support from being used if the BIOS had been told
that the OS was compatible with Windows 8 and the i915 driver was
loaded, in which case the backlight would always be handled by i915.
Unfortunately, however, that turned out to cause problems with
backlight to appear on multiple systems with symptoms indicating that
i915 was unable to control the backlight on those systems as
expected.
For this reason, revert commit 8c5bd7a, but leave the function
acpi_video_backlight_quirks() introduced by it, because another
commit on top of it uses that function.
References: https://lkml.org/lkml/2013/7/21/119
References: https://lkml.org/lkml/2013/7/22/261
References: https://lkml.org/lkml/2013/7/23/429
References: https://lkml.org/lkml/2013/7/23/459
References: https://lkml.org/lkml/2013/7/23/81
References: https://lkml.org/lkml/2013/7/24/27
Reported-and-tested-by: James Hogan <james@albanarts.com>
Reported-and-tested-by: Kamal Mostafa <kamal@canonical.com>
Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
Reported-and-tested-by: Steven Newbury <steve@snewbury.org.uk>
Reported-by: Martin Steigerwald <Martin@lichtvoll.de>
Reported-by: Kalle Valo <kvalo@adurom.com>
Tested-by: Joerg Platte <jplatte@naasa.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Commits 6a1c0680cf3ba94356ecd58833e1540c93472a57 and
9356b535fcb71db494fc434acceb79f56d15bda2, respectively
'tty: Convert termios_mutex to termios_rwsem' and
'n_tty: Access termios values safely'
introduced a circular lock dependency with console_lock and
termios_rwsem.
The lockdep report [1] shows that n_tty_write() will attempt
to claim console_lock while holding the termios_rwsem, whereas
tty_do_resize() may already hold the console_lock while
claiming the termios_rwsem.
Since n_tty_write() and tty_do_resize() do not contend
over the same data -- the tty->winsize structure -- correct
the lock dependency by introducing a new lock which
specifically serializes access to tty->winsize only.
[1] Lockdep report
======================================================
[ INFO: possible circular locking dependency detected ]
3.10.0-0+tip-xeon+lockdep #0+tip Not tainted
-------------------------------------------------------
modprobe/277 is trying to acquire lock:
(&tty->termios_rwsem){++++..}, at: [<ffffffff81452656>] tty_do_resize+0x36/0xe0
but task is already holding lock:
((fb_notifier_list).rwsem){.+.+.+}, at: [<ffffffff8107aac6>] __blocking_notifier_call_chain+0x56/0xc0
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 ((fb_notifier_list).rwsem){.+.+.+}:
[<ffffffff810b6d62>] lock_acquire+0x92/0x1f0
[<ffffffff8175b797>] down_read+0x47/0x5c
[<ffffffff8107aac6>] __blocking_notifier_call_chain+0x56/0xc0
[<ffffffff8107ab46>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff813d7c0b>] fb_notifier_call_chain+0x1b/0x20
[<ffffffff813d95b2>] register_framebuffer+0x1e2/0x320
[<ffffffffa01043e1>] drm_fb_helper_initial_config+0x371/0x540 [drm_kms_helper]
[<ffffffffa01bcb05>] nouveau_fbcon_init+0x105/0x140 [nouveau]
[<ffffffffa01ad0af>] nouveau_drm_load+0x43f/0x610 [nouveau]
[<ffffffffa008a79e>] drm_get_pci_dev+0x17e/0x2a0 [drm]
[<ffffffffa01ad4da>] nouveau_drm_probe+0x25a/0x2a0 [nouveau]
[<ffffffff813b13db>] local_pci_probe+0x4b/0x80
[<ffffffff813b1701>] pci_device_probe+0x111/0x120
[<ffffffff814977eb>] driver_probe_device+0x8b/0x3a0
[<ffffffff81497bab>] __driver_attach+0xab/0xb0
[<ffffffff814956ad>] bus_for_each_dev+0x5d/0xa0
[<ffffffff814971fe>] driver_attach+0x1e/0x20
[<ffffffff81496cc1>] bus_add_driver+0x111/0x290
[<ffffffff814982b7>] driver_register+0x77/0x170
[<ffffffff813b0454>] __pci_register_driver+0x64/0x70
[<ffffffffa008a9da>] drm_pci_init+0x11a/0x130 [drm]
[<ffffffffa022a04d>] nouveau_drm_init+0x4d/0x1000 [nouveau]
[<ffffffff810002ea>] do_one_initcall+0xea/0x1a0
[<ffffffff810c54cb>] load_module+0x123b/0x1bf0
[<ffffffff810c5f57>] SyS_init_module+0xd7/0x120
[<ffffffff817677c2>] system_call_fastpath+0x16/0x1b
-> #1 (console_lock){+.+.+.}:
[<ffffffff810b6d62>] lock_acquire+0x92/0x1f0
[<ffffffff810430a7>] console_lock+0x77/0x80
[<ffffffff8146b2a1>] con_flush_chars+0x31/0x50
[<ffffffff8145780c>] n_tty_write+0x1ec/0x4d0
[<ffffffff814541b9>] tty_write+0x159/0x2e0
[<ffffffff814543f5>] redirected_tty_write+0xb5/0xc0
[<ffffffff811ab9d5>] vfs_write+0xc5/0x1f0
[<ffffffff811abec5>] SyS_write+0x55/0xa0
[<ffffffff817677c2>] system_call_fastpath+0x16/0x1b
-> #0 (&tty->termios_rwsem){++++..}:
[<ffffffff810b65c3>] __lock_acquire+0x1c43/0x1d30
[<ffffffff810b6d62>] lock_acquire+0x92/0x1f0
[<ffffffff8175b724>] down_write+0x44/0x70
[<ffffffff81452656>] tty_do_resize+0x36/0xe0
[<ffffffff8146c841>] vc_do_resize+0x3e1/0x4c0
[<ffffffff8146c99f>] vc_resize+0x1f/0x30
[<ffffffff813e4535>] fbcon_init+0x385/0x5a0
[<ffffffff8146a4bc>] visual_init+0xbc/0x120
[<ffffffff8146cd13>] do_bind_con_driver+0x163/0x320
[<ffffffff8146cfa1>] do_take_over_console+0x61/0x70
[<ffffffff813e2b93>] do_fbcon_takeover+0x63/0xc0
[<ffffffff813e67a5>] fbcon_event_notify+0x715/0x820
[<ffffffff81762f9d>] notifier_call_chain+0x5d/0x110
[<ffffffff8107aadc>] __blocking_notifier_call_chain+0x6c/0xc0
[<ffffffff8107ab46>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff813d7c0b>] fb_notifier_call_chain+0x1b/0x20
[<ffffffff813d95b2>] register_framebuffer+0x1e2/0x320
[<ffffffffa01043e1>] drm_fb_helper_initial_config+0x371/0x540 [drm_kms_helper]
[<ffffffffa01bcb05>] nouveau_fbcon_init+0x105/0x140 [nouveau]
[<ffffffffa01ad0af>] nouveau_drm_load+0x43f/0x610 [nouveau]
[<ffffffffa008a79e>] drm_get_pci_dev+0x17e/0x2a0 [drm]
[<ffffffffa01ad4da>] nouveau_drm_probe+0x25a/0x2a0 [nouveau]
[<ffffffff813b13db>] local_pci_probe+0x4b/0x80
[<ffffffff813b1701>] pci_device_probe+0x111/0x120
[<ffffffff814977eb>] driver_probe_device+0x8b/0x3a0
[<ffffffff81497bab>] __driver_attach+0xab/0xb0
[<ffffffff814956ad>] bus_for_each_dev+0x5d/0xa0
[<ffffffff814971fe>] driver_attach+0x1e/0x20
[<ffffffff81496cc1>] bus_add_driver+0x111/0x290
[<ffffffff814982b7>] driver_register+0x77/0x170
[<ffffffff813b0454>] __pci_register_driver+0x64/0x70
[<ffffffffa008a9da>] drm_pci_init+0x11a/0x130 [drm]
[<ffffffffa022a04d>] nouveau_drm_init+0x4d/0x1000 [nouveau]
[<ffffffff810002ea>] do_one_initcall+0xea/0x1a0
[<ffffffff810c54cb>] load_module+0x123b/0x1bf0
[<ffffffff810c5f57>] SyS_init_module+0xd7/0x120
[<ffffffff817677c2>] system_call_fastpath+0x16/0x1b
other info that might help us debug this:
Chain exists of:
&tty->termios_rwsem --> console_lock --> (fb_notifier_list).rwsem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((fb_notifier_list).rwsem);
lock(console_lock);
lock((fb_notifier_list).rwsem);
lock(&tty->termios_rwsem);
*** DEADLOCK ***
7 locks held by modprobe/277:
#0: (&__lockdep_no_validate__){......}, at: [<ffffffff81497b5b>] __driver_attach+0x5b/0xb0
#1: (&__lockdep_no_validate__){......}, at: [<ffffffff81497b69>] __driver_attach+0x69/0xb0
#2: (drm_global_mutex){+.+.+.}, at: [<ffffffffa008a6dd>] drm_get_pci_dev+0xbd/0x2a0 [drm]
#3: (registration_lock){+.+.+.}, at: [<ffffffff813d93f5>] register_framebuffer+0x25/0x320
#4: (&fb_info->lock){+.+.+.}, at: [<ffffffff813d8116>] lock_fb_info+0x26/0x60
#5: (console_lock){+.+.+.}, at: [<ffffffff813d95a4>] register_framebuffer+0x1d4/0x320
#6: ((fb_notifier_list).rwsem){.+.+.+}, at: [<ffffffff8107aac6>] __blocking_notifier_call_chain+0x56/0xc0
stack backtrace:
CPU: 0 PID: 277 Comm: modprobe Not tainted 3.10.0-0+tip-xeon+lockdep #0+tip
Hardware name: Dell Inc. Precision WorkStation T5400 /0RW203, BIOS A11 04/30/2012
ffffffff8213e5e0 ffff8802aa2fb298 ffffffff81755f19 ffff8802aa2fb2e8
ffffffff8174f506 ffff8802aa2fa000 ffff8802aa2fb378 ffff8802aa2ea8e8
ffff8802aa2ea910 ffff8802aa2ea8e8 0000000000000006 0000000000000007
Call Trace:
[<ffffffff81755f19>] dump_stack+0x19/0x1b
[<ffffffff8174f506>] print_circular_bug+0x1fb/0x20c
[<ffffffff810b65c3>] __lock_acquire+0x1c43/0x1d30
[<ffffffff810b775e>] ? mark_held_locks+0xae/0x120
[<ffffffff810b78d5>] ? trace_hardirqs_on_caller+0x105/0x1d0
[<ffffffff810b6d62>] lock_acquire+0x92/0x1f0
[<ffffffff81452656>] ? tty_do_resize+0x36/0xe0
[<ffffffff8175b724>] down_write+0x44/0x70
[<ffffffff81452656>] ? tty_do_resize+0x36/0xe0
[<ffffffff81452656>] tty_do_resize+0x36/0xe0
[<ffffffff8146c841>] vc_do_resize+0x3e1/0x4c0
[<ffffffff8146c99f>] vc_resize+0x1f/0x30
[<ffffffff813e4535>] fbcon_init+0x385/0x5a0
[<ffffffff8146a4bc>] visual_init+0xbc/0x120
[<ffffffff8146cd13>] do_bind_con_driver+0x163/0x320
[<ffffffff8146cfa1>] do_take_over_console+0x61/0x70
[<ffffffff813e2b93>] do_fbcon_takeover+0x63/0xc0
[<ffffffff813e67a5>] fbcon_event_notify+0x715/0x820
[<ffffffff81762f9d>] notifier_call_chain+0x5d/0x110
[<ffffffff8107aadc>] __blocking_notifier_call_chain+0x6c/0xc0
[<ffffffff8107ab46>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff813d7c0b>] fb_notifier_call_chain+0x1b/0x20
[<ffffffff813d95b2>] register_framebuffer+0x1e2/0x320
[<ffffffffa01043e1>] drm_fb_helper_initial_config+0x371/0x540 [drm_kms_helper]
[<ffffffff8173cbcb>] ? kmemleak_alloc+0x5b/0xc0
[<ffffffff81198874>] ? kmem_cache_alloc_trace+0x104/0x290
[<ffffffffa01035e1>] ? drm_fb_helper_single_add_all_connectors+0x81/0xf0 [drm_kms_helper]
[<ffffffffa01bcb05>] nouveau_fbcon_init+0x105/0x140 [nouveau]
[<ffffffffa01ad0af>] nouveau_drm_load+0x43f/0x610 [nouveau]
[<ffffffffa008a79e>] drm_get_pci_dev+0x17e/0x2a0 [drm]
[<ffffffffa01ad4da>] nouveau_drm_probe+0x25a/0x2a0 [nouveau]
[<ffffffff8175f162>] ? _raw_spin_unlock_irqrestore+0x42/0x80
[<ffffffff813b13db>] local_pci_probe+0x4b/0x80
[<ffffffff813b1701>] pci_device_probe+0x111/0x120
[<ffffffff814977eb>] driver_probe_device+0x8b/0x3a0
[<ffffffff81497bab>] __driver_attach+0xab/0xb0
[<ffffffff81497b00>] ? driver_probe_device+0x3a0/0x3a0
[<ffffffff814956ad>] bus_for_each_dev+0x5d/0xa0
[<ffffffff814971fe>] driver_attach+0x1e/0x20
[<ffffffff81496cc1>] bus_add_driver+0x111/0x290
[<ffffffffa022a000>] ? 0xffffffffa0229fff
[<ffffffff814982b7>] driver_register+0x77/0x170
[<ffffffffa022a000>] ? 0xffffffffa0229fff
[<ffffffff813b0454>] __pci_register_driver+0x64/0x70
[<ffffffffa008a9da>] drm_pci_init+0x11a/0x130 [drm]
[<ffffffffa022a000>] ? 0xffffffffa0229fff
[<ffffffffa022a000>] ? 0xffffffffa0229fff
[<ffffffffa022a04d>] nouveau_drm_init+0x4d/0x1000 [nouveau]
[<ffffffff810002ea>] do_one_initcall+0xea/0x1a0
[<ffffffff810c54cb>] load_module+0x123b/0x1bf0
[<ffffffff81399a50>] ? ddebug_proc_open+0xb0/0xb0
[<ffffffff813855ae>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[<ffffffff810c5f57>] SyS_init_module+0xd7/0x120
[<ffffffff817677c2>] system_call_fastpath+0x16/0x1b
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull crypto fixes from Herbert Xu:
"This push fixes a memory corruption issue in caam, as well as
reverting the new optimised crct10dif implementation as it breaks boot
on initrd systems.
Hopefully crct10dif will be reinstated once the supporting code is
added so that it doesn't break boot"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
crypto: caam - Fixed the memory out of bound overwrite issue
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Replace the SATA_PHY_# by the more readable definitons.
tj: Being routed through libata branch to enable implementation of
ahci_imx.
Signed-off-by: Richard Zhu <r65037@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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transform framework"
This reverts commits
67822649d7305caf3dd50ed46c27b99c94eff996
39761214eefc6b070f29402aa1165f24d789b3f7
0b95a7f85718adcbba36407ef88bba0a7379ed03
31d939625a9a20b1badd2d4e6bf6fd39fa523405
2d31e518a42828df7877bca23a958627d60408bc
Unfortunately this change broke boot on some systems that used an
initrd which does not include the newly created crct10dif modules.
As these modules are required by sd_mod under certain configurations
this is a serious problem.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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|
git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fix from Tony Luck:
"Fix EDAC lockdep splat"
* tag 'please-pull-bp-edac' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC: Fix lockdep splat
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|
In canonical mode, an EOF which is not the first character of the line
causes read() to complete and return the number of characters read so
far (commonly referred to as EOF push). However, if the previous read()
returned because the user buffer was full _and_ the next character
is an EOF not at the beginning of the line, read() must not return 0,
thus mistakenly indicating the end-of-file condition.
The TTY_PUSH flag is used to indicate an EOF was received which is not
at the beginning of the line. Because the EOF push condition is
evaluated by a thread other than the read(), multiple EOF pushes can
cause a premature end-of-file to be indicated.
Instead, discover the 'EOF push as first read character' condition
from the read() thread itself, and restart the i/o loop if detected.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
TTY_BUFFER_PAGE is only used within drivers/tty/tty_buffer.c;
relocate to that file scope.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Convert the tty_buffer_flush() exclusion mechanism to a
public interface - tty_buffer_lock/unlock_exclusive() - and use
the interface to safely write the paste selection to the line
discipline.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Atomic bit ops are no longer required to indicate a flip buffer
flush is pending, as the flush_mutex is sufficient barrier.
Remove the unnecessary port .iflags field and localize flip buffer
state to struct tty_bufhead.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Separate the head and tail ptrs to avoid cache-line contention
(so called 'false-sharing') between concurrent threads.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Now that dropping the buffer lock is not necessary (as result of
converting the spin lock to a mutex), the flip buffer flush no
longer needs to be handled by the buffer work.
Simply signal a flush is required; the buffer work will exit the
i/o loop, which allows tty_buffer_flush() to proceed.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The buffer work may race with parallel tty_buffer_flush. Use a
mutex to guarantee exclusive modify access to the head flip
buffer.
Remove the unneeded spin lock.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Lockless flip buffers require atomically updating the bytes-in-use
watermark.
The pty driver also peeks at the watermark value to limit
memory consumption to a much lower value than the default; query
the watermark with new fn, tty_buffer_space_avail().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Use a 0-sized sentinel to avoid assigning the head ptr from
the driver side thread. This also eliminates testing head/tail
for NULL.
When the sentinel is first 'consumed' by the buffer work
(or by tty_buffer_flush()), it is detached from the list but not
freed nor added to the free list. Both buffer work and
tty_buffer_flush() continue to preserve at least 1 flip buffer
to which head & tail is pointed.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
In preparation for lockless flip buffers, make the flip buffer
free list lockless.
NB: using llist is not the optimal solution, as the driver and
buffer work may contend over the llist head unnecessarily. However,
test measurements indicate this contention is low.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The char_buf_ptr and flag_buf_ptr values are trivially derived from
the .data field offset; compute values as needed.
Fixes a long-standing type-mismatch with the char and flag ptrs.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
No tty driver modifies termios during throttle() or unthrottle().
Therefore, only read safety is required.
However, tty_throttle_safe and tty_unthrottle_safe must still be
mutually exclusive; introduce throttle_mutex for that purpose.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
termios is commonly accessed unsafely (especially by N_TTY)
because the existing mutex forces exclusive access.
Convert existing usage.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Although line discipline receiving is single-producer/single-consumer,
using tty->receive_room to manage flow control creates unnecessary
critical regions requiring additional lock use.
Instead, introduce the optional .receive_buf2() ldisc method which
returns the # of bytes actually received. Serialization is guaranteed
by the caller.
In turn, the line discipline should schedule the buffer work item
whenever space becomes available; ie., when there is room to receive
data and receive_room() previously returned 0 (the buffer work
item stops processing if receive_buf2() returns 0). Note the
'no room' state need not be atomic despite concurrent use by two
threads because only the buffer work thread can set the state and
only the read() thread can clear the state.
Add n_tty_receive_buf2() as the receive_buf2() method for N_TTY.
Provide a public helper function, tty_ldisc_receive_buf(), to use
when directly accessing the receive_buf() methods.
Line disciplines not using input flow control can continue to set
tty->receive_room to a fixed value and only provide the receive_buf()
method.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Line discipline locking was performed with a combination of
a mutex, a status bit, a count, and a waitqueue -- basically,
a rw semaphore.
Replace the existing combination with an ld_semaphore.
Fixes:
1) the 'reference acquire after ldisc locked' bug
2) the over-complicated halt mechanism
3) lock order wrt. tty_lock()
4) dropping locks while changing ldisc
5) previously unidentified deadlock while locking ldisc from
both linked ttys concurrently
6) previously unidentified recursive deadlocks
Adds much-needed lockdep diagnostics.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Fix the following:
BUG: key ffff88043bdd0330 not in .data!
------------[ cut here ]------------
WARNING: at kernel/lockdep.c:2987 lockdep_init_map+0x565/0x5a0()
DEBUG_LOCKS_WARN_ON(1)
Modules linked in: glue_helper sb_edac(+) edac_core snd acpi_cpufreq lrw gf128mul ablk_helper iTCO_wdt evdev i2c_i801 dcdbas button cryptd pcspkr iTCO_vendor_support usb_common lpc_ich mfd_core soundcore mperf processor microcode
CPU: 2 PID: 599 Comm: modprobe Not tainted 3.10.0 #1
Hardware name: Dell Inc. Precision T3600/0PTTT9, BIOS A08 01/24/2013
0000000000000009 ffff880439a1d920 ffffffff8160a9a9 ffff880439a1d958
ffffffff8103d9e0 ffff88043af4a510 ffffffff81a16e11 0000000000000000
ffff88043bdd0330 0000000000000000 ffff880439a1d9b8 ffffffff8103dacc
Call Trace:
dump_stack
warn_slowpath_common
warn_slowpath_fmt
lockdep_init_map
? trace_hardirqs_on_caller
? trace_hardirqs_on
debug_mutex_init
__mutex_init
bus_register
edac_create_sysfs_mci_device
edac_mc_add_mc
sbridge_probe
pci_device_probe
driver_probe_device
__driver_attach
? driver_probe_device
bus_for_each_dev
driver_attach
bus_add_driver
driver_register
__pci_register_driver
? 0xffffffffa0010fff
sbridge_init
? 0xffffffffa0010fff
do_one_initcall
load_module
? unset_module_init_ro_nx
SyS_init_module
tracesys
---[ end trace d24a70b0d3ddf733 ]---
EDAC MC0: Giving out device to 'sbridge_edac.c' 'Sandy Bridge Socket#0': DEV 0000:3f:0e.0
EDAC sbridge: Driver loaded.
What happens is that bus_register needs a statically allocated lock_key
because the last is handed in to lockdep. However, struct mem_ctl_info
embeds struct bus_type (the whole struct, not a pointer to it) and the
whole thing gets dynamically allocated.
Fix this by using a statically allocated struct bus_type for the MC bus.
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: stable@kernel.org # v3.10
Signed-off-by: Tony Luck <tony.luck@intel.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup changes from Tejun Heo:
"This contains two patches, both of which aren't fixes per-se but I
think it'd be better to fast-track them.
One removes bcache_subsys_id which was added without proper review
through the block tree. Fortunately, bcache cgroup code is
unconditionally disabled, so this was never exposed to userland. The
cgroup subsys_id is removed. Kent will remove the affected (disabled)
code through bcache branch.
The other simplifies task_group_path_from_hierarchy(). The function
doesn't currently have in-kernel users but there are external code and
development going on dependent on the function and making the function
available for 3.11 would make things go smoother"
* 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: replace task_cgroup_path_from_hierarchy() with task_cgroup_path()
cgroup: remove bcache_subsys_id which got added stealthily
|
|
The em_x270_mci_setpower() and em_x270_usb_hub_init() functions
call regulator_enable(), which may return an error that must
be checked.
This changes the em_x270_usb_hub_init() function to bail out
if it fails, and changes the pxamci_platform_data->setpower
callback so that the a failed em_x270_mci_setpower call
can be propagated by the pxamci driver into the mmc core.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Chris Ball <cjb@laptop.org>
[olof: fixed order of regulator_enable() and test in em_x270_usb_hub_init]
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
into fixes
From Shawn Guo, imx fixes for 3.11:
- A few device tree source fixes regarding pinctrl, clock, and pwm
backlight.
- Fixes imx28 and imx51 audio driver failure caused by sgtl5000 codec
driver change by supplying the correct clock for codec.
- imx6q emi_sel clock muxing and imx6q-iomuxc-gpr macro fixes
* tag 'imx-fixes-3.11' of git://git.linaro.org/people/shawnguo/linux-2.6:
ARM: dts: imx51-babbage: Pass a real clock to the codec
ARM i.MX53: mba53: Fix PWM backlight DT node
ARM: imx: fix vf610 enet module clock selection
ARM: mxs: saif0 is the clock provider to sgtl5000
ARM: i.MX6Q: correct emi_sel clock muxing
ARM i.MX6Q: Fix IOMUXC GPR1 defines for ENET_CLK_SEL and IPU1/2_MUX
ARM: i.MX27: Typo fix
ARM: imx27: Fix documentation for SPLL clock
ARM i.MX53: Fix UART pad configuration
|
|
On platforms with no support for the shdma dmaengine driver build is
currently failing with
drivers/built-in.o: In function `sh_mobile_sdhi_probe':
drivers/mmc/host/sh_mobile_sdhi.c:170: undefined reference to`shdma_chan_filter'
Fix the breakage by defining shdma_chan_filter to NULL in such
configurations.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
[horms+renesas@verge.net.au: Apply change to shdma-base.h instead of sh_dma.h]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
Pull block IO driver bits from Jens Axboe:
"As I mentioned in the core block pull request, due to real life
circumstances the driver pull request would be late. Now it looks
like -rc2 late... On the plus side, apart form the rsxx update, these
are all things that I could argue could go in later in the cycle as
they are fixes and not features. So even though things are late, it's
not ALL bad.
The pull request contains:
- Updates to bcache, all bug fixes, from Kent.
- A pile of drbd bug fixes (no big features this time!).
- xen blk front/back fixes.
- rsxx driver updates, some of them deferred form 3.10. So should be
well cooked by now"
* 'for-3.11/drivers' of git://git.kernel.dk/linux-block: (63 commits)
bcache: Allocation kthread fixes
bcache: Fix GC_SECTORS_USED() calculation
bcache: Journal replay fix
bcache: Shutdown fix
bcache: Fix a sysfs splat on shutdown
bcache: Advertise that flushes are supported
bcache: check for allocation failures
bcache: Fix a dumb race
bcache: Use standard utility code
bcache: Update email address
bcache: Delete fuzz tester
bcache: Document shrinker reserve better
bcache: FUA fixes
drbd: Allow online change of al-stripes and al-stripe-size
drbd: Constants should be UPPERCASE
drbd: Ignore the exit code of a fence-peer handler if it returns too late
drbd: Fix rcu_read_lock balance on error path
drbd: fix error return code in drbd_init()
drbd: Do not sleep inside rcu
bcache: Refresh usage docs
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI video support fixes from Rafael Wysocki:
"I'm sending a separate pull request for this as it may be somewhat
controversial. The breakage addressed here is not really new and the
fixes may not satisfy all users of the affected systems, but we've had
so much back and forth dance in this area over the last several weeks
that I think it's time to actually make some progress.
The source of the problem is that about a year ago we started to tell
BIOSes that we're compatible with Windows 8, which we really need to
do, because some systems shipping with Windows 8 are tested with it
and nothing else, so if we tell their BIOSes that we aren't compatible
with Windows 8, we expose our users to untested BIOS/AML code paths.
However, as it turns out, some Windows 8-specific AML code paths are
not tested either, because Windows 8 actually doesn't use the ACPI
methods containing them, so if we declare Windows 8 compatibility and
attempt to use those ACPI methods, things break. That occurs mostly
in the backlight support area where in particular the _BCM and _BQC
methods are plain unusable on some systems if the OS declares Windows
8 compatibility.
[ The additional twist is that they actually become usable if the OS
says it is not compatible with Windows 8, but that may cause
problems to show up elsewhere ]
Investigation carried out by Matthew Garrett indicates that what
Windows 8 does about backlight is to leave backlight control up to
individual graphics drivers. At least there's evidence that it does
that if the Intel graphics driver is used, so we've decided to follow
Windows 8 in that respect and allow i915 to control backlight (Daniel
likes that part).
The first commit from Aaron Lu makes ACPICA export the variable from
which we can infer whether or not the BIOS believes that we are
compatible with Windows 8.
The second commit from Matthew Garrett prepares the ACPI video driver
by making it initialize the ACPI backlight even if it is not going to
be used afterward (that is needed for backlight control to work on
Thinkpads).
The third commit implements the actual workaround making i915 take
over backlight control if the firmware thinks it's dealing with
Windows 8 and is based on the work of multiple developers, including
Matthew Garrett, Chun-Yi Lee, Seth Forshee, and Aaron Lu.
The final commit from Aaron Lu makes us follow Windows 8 by informing
the firmware through the _DOS method that it should not carry out
automatic brightness changes, so that brightness can be controlled by
GUI.
Hopefully, this approach will allow us to avoid using blacklists of
systems that should not declare Windows 8 compatibility just to avoid
backlight control problems in the future.
- Change from Aaron Lu makes ACPICA export a variable which can be
used by driver code to determine whether or not the BIOS believes
that we are compatible with Windows 8.
- Change from Matthew Garrett makes the ACPI video driver initialize
the ACPI backlight even if it is not going to be used afterward
(that is needed for backlight control to work on Thinkpads).
- Fix from Rafael J Wysocki implements Windows 8 backlight support
workaround making i915 take over bakclight control if the firmware
thinks it's dealing with Windows 8. Based on the work of multiple
developers including Matthew Garrett, Chun-Yi Lee, Seth Forshee,
and Aaron Lu.
- Fix from Aaron Lu makes the kernel follow Windows 8 by informing
the firmware through the _DOS method that it should not carry out
automatic brightness changes, so that brightness can be controlled
by GUI"
* tag 'acpi-video-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / video: no automatic brightness changes by win8-compatible firmware
ACPI / video / i915: No ACPI backlight if firmware expects Windows 8
ACPI / video: Always call acpi_video_init_brightness() on init
ACPICA: expose OSI version
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree fixes from Greg KH:
"Here are a few iio driver fixes for 3.11-rc2. They are still spread
across drivers/iio and drivers/staging/iio so they are coming in
through this tree.
I've also removed the drivers/staging/csr/ driver as the developers
who originally sent it to me have moved on to other companies, and CSR
still will not send us the specs for the device, making the driver
pretty much obsolete and impossible to fix up. Deleting it now
prevents people from sending in lots of tiny codingsyle fixes that
will never go anywhere.
It also helps to offset the large lustre filesystem merge that
happened in 3.11-rc1 in the overall 3.11.0 diffstat. :)"
* tag 'staging-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: csr: remove driver
iio: lps331ap: Fix wrong in_pressure_scale output value
iio staging: fix lis3l02dq, read error handling
staging:iio:ad7291: add missing .driver_module to struct iio_info
iio: ti_am335x_adc: add missing .driver_module to struct iio_info
iio: mxs-lradc: Remove useless check in read_raw
iio: mxs-lradc: Fix misuse of iio->trig
iio: inkern: fix iio_convert_raw_to_processed_unlocked
iio: Fix iio_channel_has_info
iio:trigger: device_unregister->device_del to avoid double free
iio: dac: ad7303: fix error return code in ad7303_probe()
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"The sget() one is a long-standing bug and will need to go into -stable
(in fact, it had been originally caught in RHEL6), the other two are
3.11-only"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: constify dentry parameter in d_count()
livelock avoidance in sget()
allow O_TMPFILE to work with O_WRONLY
|
|
so that it can be used in places like d_compare/d_hash
without causing a compiler warning.
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"These are fixes collected over the last week, most importnatly two
cpufreq reverts fixing regressions introduced in 3.10, an autoseelp
fix preventing systems using it from crashing during shutdown and two
ACPI scan fixes related to hotplug.
Specifics:
- Two cpufreq commits from the 3.10 cycle introduced regressions.
The first of them was buggy (it did way much more than it needed to
do) and the second one attempted to fix an issue introduced by the
first one. Fixes from Srivatsa S Bhat revert both.
- If autosleep triggers during system shutdown and the shutdown
callbacks of some device drivers have been called already, it may
crash the system. Fix from Liu Shuo prevents that from happening
by making try_to_suspend() check system_state.
- The ACPI memory hotplug driver doesn't clear its driver_data on
errors which may cause a NULL poiter dereference to happen later.
Fix from Toshi Kani.
- The ACPI namespace scanning code should not try to attach scan
handlers to device objects that have them already, which may
confuse things quite a bit, and it should rescan the whole
namespace branch starting at the given node after receiving a bus
check notify event even if the device at that particular node has
been discovered already. Fixes from Rafael J Wysocki.
- New ACPI video blacklist entry for a system whose initial backlight
setting from the BIOS doesn't make sense. From Lan Tianyu.
- Garbage string output avoindance for ACPI PNP from Liu Shuo.
- Two Kconfig fixes for issues introduced recently in the s3c24xx
cpufreq driver (when moving the driver to drivers/cpufreq) from
Paul Bolle.
- Trivial comment fix in pm_wakeup.h from Chanwoo Choi"
* tag 'pm+acpi-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / video: ignore BIOS initial backlight value for Fujitsu E753
PNP / ACPI: avoid garbage in resource name
cpufreq: Revert commit 2f7021a8 to fix CPU hotplug regression
cpufreq: s3c24xx: fix "depends on ARM_S3C24XX" in Kconfig
cpufreq: s3c24xx: rename CONFIG_CPU_FREQ_S3C24XX_DEBUGFS
PM / Sleep: Fix comment typo in pm_wakeup.h
PM / Sleep: avoid 'autosleep' in shutdown progress
cpufreq: Revert commit a66b2e to fix suspend/resume regression
ACPI / memhotplug: Fix a stale pointer in error path
ACPI / scan: Always call acpi_bus_scan() for bus check notifications
ACPI / scan: Do not try to attach scan handlers to devices having them
|
|
Pull networking fixes from David Miller:
"A couple interesting SKB fragment handling fixes, plus the usual small
bits here and there:
1) Fix 64-bit divide build failure on 32-bit platforms in mlx5, from
Tim Gardner.
2) Get rid of a stupid reimplementation on "%*phC" in our sysfs MAC
address printing helper.
3) Fix NETIF_F_SG capability advertisement in hyperv driver, if the
device can't do checksumming offloads then it shouldn't say it can
do SG either. From Haiyang Zhang.
4) bgmac needs to depend on PHYLIB, from Hauke Mehrtens.
5) Don't leak DMA mappings on mapping failures, from Neil Horman.
6) We need to reset the transport header of SKBs in ipv4 before we
attempt to perform early socket demux, just like ipv6 does. From
Eric Dumazet.
7) Add missing locking on vxlan device removal, from Stephen
Hemminger.
8) xen-netfront has to make two passes over an SKB to prepare it for
transfer. One pass calculates the number of slots needed, the
second massages the SKB and fills the slots. Unfortunately, the
first pass doesn't calculate the number of slots properly so we
can end up trying to build a MAX_SKB_FRAGS + 1 SKB which doesn't
work out so well. Fix from Jan Beulich with help and discussion
with several others.
9) Fix a similar problem in tun and macvtap, which have to split up
scatter-gather elements at PAGE_SIZE boundaries. Don't do
zerocopy if it would result in a > MAX_SKB_FRAGS skb. Fixes from
Jason Wang.
10) On receive, once we've decoded the VLAN state completely, clear
skb->vlan_tci. Otherwise demuxed tunnels underneath can trigger
the VLAN code again, corrupting the packet. Fix from Eric
Dumazet"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
vlan: fix a race in egress prio management
vlan: mask vlan prio bits
macvtap: do not zerocopy if iov needs more pages than MAX_SKB_FRAGS
tuntap: do not zerocopy if iov needs more pages than MAX_SKB_FRAGS
pkt_sched: sch_qfq: remove a source of high packet delay/jitter
xen-netfront: pull on receive skb may need to happen earlier
vxlan: add necessary locking on device removal
hyperv: Fix the NETIF_F_SG flag setting in netvsc
net: Fix sysfs_format_mac() code duplication.
be2net: Fix to avoid hardware workaround when not needed
macvtap: do not assume 802.1Q when send vlan packets
macvtap: fix the missing ret value of TUNSETQUEUE
ipv4: set transport header earlier
mlx5 core: Fix __udivdi3 when compiling for 32 bit arches
bgmac: add dependency to phylib
net/irda: fixed style issues in irlan_eth
ethtool: fixed trailing statements in ethtool
ndisc: bool initializations should use true and false
atl1e: unmap partially mapped skb on dma error and free skb
|
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In commit 48cc32d38a52d0b68f91a171a8d00531edc6a46e
("vlan: don't deliver frames for unknown vlans to protocols")
Florian made sure we set pkt_type to PACKET_OTHERHOST
if the vlan id is set and we could find a vlan device for this
particular id.
But we also have a problem if prio bits are set.
Steinar reported an issue on a router receiving IPv6 frames with a
vlan tag of 4000 (id 0, prio 2), and tunneled into a sit device,
because skb->vlan_tci is set.
Forwarded frame is completely corrupted : We can see (8100:4000)
being inserted in the middle of IPv6 source address :
16:48:00.780413 IP6 2001:16d8:8100:4000:ee1c:0:9d9:bc87 >
9f94:4d95:2001:67c:29f4::: ICMP6, unknown icmp6 type (0), length 64
0x0000: 0000 0029 8000 c7c3 7103 0001 a0ae e651
0x0010: 0000 0000 ccce 0b00 0000 0000 1011 1213
0x0020: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223
0x0030: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233
It seems we are not really ready to properly cope with this right now.
We can probably do better in future kernels :
vlan_get_ingress_priority() should be a netdev property instead of
a per vlan_dev one.
For stable kernels, lets clear vlan_tci to fix the bugs.
Reported-by: Steinar H. Gunderson <sesse@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core patches from Greg KH:
"Here are some driver core patches for 3.11-rc2. They aren't really
bugfixes, but a bunch of new helper macros for drivers to properly
create attribute groups, which drivers and subsystems need to fix up a
ton of race issues with incorrectly creating sysfs files (binary and
normal) after userspace has been told that the device is present.
Also here is the ability to create binary files as attribute groups,
to solve that race condition, which was impossible to do before this,
so that's my fault the drivers were broken.
The majority of the .c changes is indenting and moving code around a
bit. It affects no existing code, but allows the large backlog of 70+
patches that I already have created to start flowing into the
different subtrees, instead of having to live in my driver-core tree,
causing merge nightmares in linux-next for the next few months.
These were finalized too late for the -rc1 merge window, which is why
they were didn't make that pull request, testing and review from
others didn't happen until a few weeks ago, and then there's the whole
distraction of the past few days, which prevented these from getting
to you sooner, sorry about that.
Oh, and there's a bugfix for the documentation build warning in here
as well. All of these have been in linux-next this week, with no
reported problems"
* tag 'driver-core-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
driver-core: fix new kernel-doc warning in base/platform.c
sysfs: use file mode defines from stat.h
sysfs: add more helper macro's for (bin_)attribute(_groups)
driver core: add default groups to struct class
driver core: Introduce device_create_groups
sysfs: prevent warning when only using binary attributes
sysfs: add support for binary attributes in groups
driver core: device.h: add RW and RO attribute macros
sysfs.h: add BIN_ATTR macro
sysfs.h: add ATTRIBUTE_GROUPS() macro
sysfs.h: add __ATTR_RW() macro
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git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
Pull phase two of __cpuinit removal from Paul Gortmaker:
"With the __cpuinit infrastructure removed earlier, this group of
commits only removes the function/data tagging that was done with the
various (now no-op) __cpuinit related prefixes.
Now that the dust has settled with yesterday's v3.11-rc1, there
hopefully shouldn't be any new users leaking back in tree, but I think
we can leave the harmless no-op stubs there for a release as a
courtesy to those who still have out of tree stuff and weren't paying
attention.
Although the commits are against the recent tag to allow for minor
context refreshes for things like yesterday's v3.11-rc1~ slab content,
the patches have been largely unchanged for weeks, aside from such
trivial updates.
For detail junkies, the largely boring and mostly irrelevant history
of the patches can be viewed at:
http://git.kernel.org/cgit/linux/kernel/git/paulg/cpuinit-delete.git
If nothing else, I guess it does at least demonstrate the level of
involvement required to shepherd such a treewide change to completion.
This is the same repository of patches that has been applied to the
end of the daily linux-next branches for the past several weeks"
* 'cpuinit_phase2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (28 commits)
block: delete __cpuinit usage from all block files
drivers: delete __cpuinit usage from all remaining drivers files
kernel: delete __cpuinit usage from all core kernel files
rcu: delete __cpuinit usage from all rcu files
net: delete __cpuinit usage from all net files
acpi: delete __cpuinit usage from all acpi files
hwmon: delete __cpuinit usage from all hwmon files
cpufreq: delete __cpuinit usage from all cpufreq files
clocksource+irqchip: delete __cpuinit usage from all related files
x86: delete __cpuinit usage from all x86 files
score: delete __cpuinit usage from all score files
xtensa: delete __cpuinit usage from all xtensa files
openrisc: delete __cpuinit usage from all openrisc files
m32r: delete __cpuinit usage from all m32r files
hexagon: delete __cpuinit usage from all hexagon files
frv: delete __cpuinit usage from all frv files
cris: delete __cpuinit usage from all cris files
metag: delete __cpuinit usage from all metag files
tile: delete __cpuinit usage from all tile files
sh: delete __cpuinit usage from all sh files
...
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According to Matthew Garrett, "Windows 8 leaves backlight control up
to individual graphics drivers rather than making ACPI calls itself.
There's plenty of evidence to suggest that the Intel driver for
Windows [8] doesn't use the ACPI interface, including the fact that
it's broken on a bunch of machines when the OS claims to support
Windows 8. The simplest thing to do appears to be to disable the
ACPI backlight interface on these systems".
There's a problem with that approach, however, because simply
avoiding to register the ACPI backlight interface if the firmware
calls _OSI for Windows 8 may not work in the following situations:
(1) The ACPI backlight interface actually works on the given system
and the i915 driver is not loaded (e.g. another graphics driver
is used).
(2) The ACPI backlight interface doesn't work on the given system,
but there is a vendor platform driver that will register its
own, equally broken, backlight interface if not prevented from
doing so by the ACPI subsystem.
Therefore we need to allow the ACPI backlight interface to be
registered until the i915 driver is loaded which then will unregister
it if the firmware has called _OSI for Windows 8 (or will register
the ACPI video driver without backlight support if not already
present).
For this reason, introduce an alternative function for registering
ACPI video, acpi_video_register_with_quirks(), that will check
whether or not the ACPI video driver has already been registered
and whether or not the backlight Windows 8 quirk has to be applied.
If the quirk has to be applied, it will block the ACPI backlight
support and either unregister the backlight interface if the ACPI
video driver has already been registered, or register the ACPI
video driver without the backlight interface otherwise. Make
the i915 driver use acpi_video_register_with_quirks() instead of
acpi_video_register() in i915_driver_load().
This change is based on earlier patches from Matthew Garrett,
Chun-Yi Lee and Seth Forshee and includes a fix from Aaron Lu's.
References: https://bugzilla.kernel.org/show_bug.cgi?id=51231
Tested-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Tested-by: Yves-Alexis Perez <corsac@debian.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
The first round of IIO fixes for the 3.11 cycle.
This set is larger than I would like, partly due to my lack of review
time in the weeks before the merge window and partly because a
couple of large drivers and the subsystem as a whole seem to be
getting a lot more exposure and testing recently.
1) A long term bug in trigger handling gave a double free of the device.
2) Wrong return value handling means offsets are ignored in
iio_convert_raw_to_processed_unlocked.
3) The iio_channel_has_info utility function was incorrectly updated
during the recent info_mask split, this is now fixed.
4) mxs-lradc has a couple of little fixes.
5) A couple of missing .driver_module entries meant that drivers
could be removed from underneath their users.
6) Error path fixes for ad7303 and lis3l02dq.
7) The scale value for presure in the lps331ap driver was out by
a factor of 100.
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__list_for_each used to be the non prefetch() aware list walking
primitive. When we removed the prefetch macros from the list routines,
it became redundant. Given it does exactly the same thing as
list_for_each now, we might as well remove it and call list_for_each
directly.
All users of __list_for_each have been converted to list_for_each calls
in the current merge window.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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