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* eeepc-laptop: remove redundant rfkill_set_sw_state in resume handlerAlan Jenkins2009-08-281-2/+1
| | | | | | | | rfkill_set_sw_state() will already be called by eeepc_rfkill_hotplug(). Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
* eeepc-laptop: make input device a child of the platform deviceAlan Jenkins2009-08-281-29/+41
| | | | | | | | | | | | | | | | Sysfs showed the ehotk input device as a "virtual" device - lies! The input device is provided by a physical device, the eeepc platform. This requires that we move the creation of the input device to come after platform device is created. Input initialization is moved from ehotk_check() [sic] to a new function called eeepc_input_init(). This brings the input device into line with the other eeepc-laptop devices. Also, refuse to load if we fail to register the input device. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
* eeepc-laptop: fix ordering of init and exit functionsAlan Jenkins2009-08-281-61/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. input and backlight devices were registered after acpi notifications are enabled. This left a window where eeepc_hotk_notify() might find these devices in an inconsistent (half-initialized) state. -> Move all device registration into eeepc_hotk_add(), which is called before enabling acpi notifications. 2. input and backlight devices were unregistered before acpi notifications are disabled. This left a window where eeepc_hotk_notify() might find these devices in an inconsistent (half-destroyed) state. -> Move all device unregistration into eeepc_hotk_remove(), which is called after disabling acpi notifications. 3. The acpi driver was not freed if an error occured further down in eeepc_laptop_init(). -> The rest of eeepc_laptop_init() has been moved to eeepc_hotk_add(), so this is no longer a problem. 4. The acpi driver was unregistered before the platform driver. This left a window where a sysfs access could attempt to read the ehotk structure after it had been freed by eeepc_hotk_remove(). -> The acpi driver is now unregistered as the last step in eeepc_laptop_exit(), so this is no longer a problem. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
* eeepc-laptop: fix pci hotplug race on load and unloadAlan Jenkins2009-08-281-32/+45
| | | | | | | | | | | | | | | | | Wifi rfkill state changes can race with pci hotplug cleanup. A simple fix is to refresh the hotplug state just before deregistering the pci hotplug slot. There is also potential for a hotplug notification to fire too early during setup, while the structures it uses are still being initialised. (This could only happen if the BIOS performs hotplug itself; a bug triggered by removing the battery while hibernated). Avoid this by registering the notifier later. The same refresh mechanism is used to handle rfkill state changes which can now race with registration. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
* eeepc-laptop: use a mutex to serialize pci hotplug (resume vs. notify)Alan Jenkins2009-08-281-8/+13
| | | | | | | | | | | | Commit d0265f0 "eeepc-laptop: fix hot-unplug on resume" used a workqueue to protect pci hotplug against multiple simultaneous calls during resume. It seems to work, but a mutex would be more appropriate. This is in preparation to fix the potential pci hotplug race on unload. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
* eeepc-laptop: don't touch the pci slot if it was claimed by a different driverAlan Jenkins2009-08-281-5/+8
| | | | | | | | | | | | The whole point of registering as a PCI hotplug driver was to prevent conflict with pciehp. At the moment it happens to work because eeepc-laptop is loaded first, but it doesn't work the other way round. If pciehp is loaded first then we fail to claim the slot - we need to respect this and not handle hotplug events. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
* xenfb: connect to backend before registering fbJeremy Fitzhardinge2009-08-271-4/+4
| | | | | | | | | | | | | | As soon as the framebuffer is registered, our methods may be called by the kernel. This leads to a crash as xenfb_refresh() gets called before we have the irq. Connect to the backend before registering our framebuffer with the kernel. [ Fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=14059 ] Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-08-272-16/+47
|\ | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: virtio: net refill on out-of-memory smc91x: fix compilation on SMP
| * virtio: net refill on out-of-memoryRusty Russell2009-08-261-15/+46
| | | | | | | | | | | | | | | | | | If we run out of memory, use keventd to fill the buffer. There's a report of this happening: "Page allocation failures in guest", Message-ID: <20090713115158.0a4892b0@mjolnir.ossman.eu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * smc91x: fix compilation on SMPAlexey Dobriyan2009-08-261-1/+1
| | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'for-linus' of ↵Linus Torvalds2009-08-271-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k,m68knommu: Wire up rt_tgsigqueueinfo and perf_counter_open m68k: Fix redefinition of pgprot_noncached arch/m68k/include/asm/motorola_pgalloc.h: fix kunmap arg m68k: cnt reaches -1, not 0 m68k: count can reach 51, not 50
| * | m68k: count can reach 51, not 50Roel Kluin2009-08-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With while (count++ < 50) { ... } count can reach 51, not 50, so we shouldn't give an error message on a count of 50. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | | leds: after setting inverted attribute, we must update the LEDThadeu Lima de Souza Cascardo2009-08-271-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we change the inverted attribute to another value, the LED will not be inverted until we change the GPIO state. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Cc: Samuel R. C. Vale <srcvale@holoscopio.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | leds: fix multiple requests and releases of IRQ for GPIO LED TriggerThadeu Lima de Souza Cascardo2009-08-271-7/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When setting the same GPIO number, multiple IRQ shared requests will be done without freing the previous request. It will also try to free a failed request or an already freed IRQ if 0 was written to the gpio file. All these oops and leaks were fixed with the following solution: keep the previous allocated GPIO (if any) still allocated in case the new request fails. The alternative solution would desallocate the previous allocated GPIO and set gpio as 0. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Samuel R. C. Vale <srcvale@holoscopio.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | acpi processor: remove superfluous warning messageFrans Pop2009-08-271-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This failure is very common on many platforms. Handling it in the ACPI processor driver is enough, and we don't need a warning message unless CONFIG_ACPI_DEBUG is set. Based on a patch from Zhang Rui. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13389 Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | ACPI processor: force throttling state when BIOS returns incorrect valueFrans Pop2009-08-272-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the BIOS reports an invalid throttling state (which seems to be fairly common after system boot), a reset is done to state T0. Because of a check in acpi_processor_get_throttling_ptc(), the reset never actually gets executed, which results in the error reoccurring on every access of for example /proc/acpi/processor/CPU0/throttling. Add a 'force' option to acpi_processor_set_throttling() to ensure the reset really takes effect. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13389 This patch, together with the next one, fixes a regression introduced in 2.6.30, listed on the regression list. They have been available for 2.5 months now in bugzilla, but have not been picked up, despite various reminders and without any reason given. Google shows that numerous people are hitting this issue. The issue is in itself relatively minor, but the bug in the code is clear. The patches have been in all my kernels and today testing has shown that throttling works correctly with the patches applied when the system overheats (http://bugzilla.kernel.org/show_bug.cgi?id=13918#c14). Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | wmi: fix kernel panic when stack protection enabled.Costantino Leandro2009-08-271-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Kernel panic arise when stack protection is enabled, since strncat will add a null terminating byte '\0'; So in functions like this one (wmi_query_block): char wc[4]="WC"; .... strncat(method, block->object_id, 2); ... the length of wc should be n+1 (wc[5]) or stack protection fault will arise. This is not noticeable when stack protection is disabled,but , isn't good either. Config used: [CONFIG_CC_STACKPROTECTOR_ALL=y, CONFIG_CC_STACKPROTECTOR=y] Panic Trace ------------ .... stack-protector: kernel stack corrupted in : fa7b182c 2.6.30-rc8-obelisco-generic call_trace: [<c04a6c40>] ? panic+0x45/0xd9 [<c012925d>] ? __stack_chk_fail+0x1c/0x40 [<fa7b182c>] ? wmi_query_block+0x15a/0x162 [wmi] [<fa7b182c>] ? wmi_query_block+0x15a/0x162 [wmi] [<fa7e7000>] ? acer_wmi_init+0x00/0x61a [acer_wmi] [<fa7e7135>] ? acer_wmi_init+0x135/0x61a [acer_wmi] [<c0101159>] ? do_one_initcall+0x50+0x126 Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13514 Signed-off-by: Costantino Leandro <lcostantino@gmail.com> Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Cc: Len Brown <len.brown@intel.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | acpi: don't call acpi_processor_init if acpi is disabledYinghai Lu2009-08-271-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jens reported early_ioremap messages with old ASUS board... > [ 1.507461] pci 0000:00:09.0: Firmware left e100 interrupts enabled; disabling > [ 1.532778] early_ioremap(3fffd080, 0000005c) [0] => Pid: 1, comm: swapper Not tainted 2.6.31-rc4 #36 > [ 1.561007] Call Trace: > [ 1.568638] [<c136e48b>] ? printk+0x18/0x1d > [ 1.581734] [<c15513ff>] __early_ioremap+0x74/0x1e9 > [ 1.596898] [<c15515aa>] early_ioremap+0x1a/0x1c > [ 1.611270] [<c154a187>] __acpi_map_table+0x18/0x1a > [ 1.626451] [<c135a7f8>] acpi_os_map_memory+0x1d/0x25 > [ 1.642129] [<c119459c>] acpi_tb_verify_table+0x20/0x49 > [ 1.658321] [<c1193e50>] acpi_get_table_with_size+0x53/0xa1 > [ 1.675553] [<c1193eae>] acpi_get_table+0x10/0x15 > [ 1.690192] [<c155cc19>] acpi_processor_init+0x23/0xab > [ 1.706126] [<c1001043>] do_one_initcall+0x33/0x180 > [ 1.721279] [<c155cbf6>] ? acpi_processor_init+0x0/0xab > [ 1.737479] [<c106893a>] ? register_irq_proc+0xaa/0xc0 > [ 1.753411] [<c10689b7>] ? init_irq_proc+0x67/0x80 > [ 1.768316] [<c15405e7>] kernel_init+0x120/0x176 > [ 1.782678] [<c15404c7>] ? kernel_init+0x0/0x176 > [ 1.797062] [<c10038b7>] kernel_thread_helper+0x7/0x10 > [ 1.812984] 00000080 + ffe00000 that is rather later. acpi_gbl_permanent_mmap should be set in acpi_early_init() if acpi is not disabled and we have > [ 0.000000] ASUS P2B-DS detected: force use of acpi=ht just don't load acpi_processor_init... Reported-and-tested-by: Jens Rosenboom <jens@leia.mcbone.net> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | thermal_sys: check get_temp return valueMichael Brunner2009-08-271-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The return value of the get_temp function is not checked when doing a thermal zone update. This may lead to a critical shutdown if get_temp fails and the content of the temp variable is incorrectly set higher than the critical trip point. This has been observed on a system with incorrect ACPI implementation where the corresponding methods were not serialized and therefore sometimes triggered ACPI errors (AE_ALREADY_EXISTS). The following critical shutdowns indicated a temperature of 2097 C, which was obviously wrong. The patch adds a return value check that jumps over all trip point evaluations printing a warning if get_temp fails. The trip points are evaluated again on the next polling interval with successful get_temp execution. Signed-off-by: Michael Brunner <mibru@gmx.de> Acked-by: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | pps: fix incorrect verdict checkJoonwoo Park2009-08-271-1/+1
|/ / | | | | | | | | | | | | | | | | | | Fix incorrect verdict check and returns error if device_create failed, otherwise driver triggers kernel oops. Signed-off-by: Joonwoo Park<joonwpark81@gmail.com> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-08-262-8/+0
|\| | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: irda/sa1100_ir: fix broken netdev_ops conversion irda/au1k_ir: fix broken netdev_ops conversion pkt_sched: Fix bogon in tasklet_hrtimer changes.
| * irda/sa1100_ir: fix broken netdev_ops conversionAlexander Beregalov2009-08-261-4/+0
| | | | | | | | | | | | | | | | | | This patch is based on commit d2f3ad4 (pxaficp-ir: remove incorrect net_device_ops). Do the same for sa1100_ir. Untested. Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * irda/au1k_ir: fix broken netdev_ops conversionAlexander Beregalov2009-08-261-4/+0
| | | | | | | | | | | | | | | | | | This patch is based on commit d2f3ad4 (pxaficp-ir: remove incorrect net_device_ops). Do the same for au1k_ir. Untested. Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2009-08-261-3/+8
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Validate linear D-TLB misses. sparc64: Update defconfig. sparc32: Update defconfig. sparc32: Kill trap table freeing code. sparc: sys32.S incorrect compat-layer splice() system call sparc: Use page_fault_out_of_memory() for VM_FAULT_OOM. sparc64: Sign extend length arg to truncate syscalls when compat. sparc: Fix cleanup crash in bbc_envctrl_cleanup()
| * | sparc: Fix cleanup crash in bbc_envctrl_cleanup()David S. Miller2009-07-171-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If kthread_run() fails or never gets to run we'll have NULL or a pointer encoded error in kenvctrld_task, rather than a legitimate task pointer. So this makes bbc_envctrl_cleanup() crash as it passed this bogus pointer into kthread_stop(). Reported-by: BERTRAND Joël <joel.bertrand@systella.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds2009-08-251-2/+4
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: clockevent: Prevent dead lock on clockevents_lock timers: Drop write permission on /proc/timer_list
| * | | clockevent: Prevent dead lock on clockevents_lockSuresh Siddha2009-08-191-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently clockevents_notify() is called with interrupts enabled at some places and interrupts disabled at some other places. This results in a deadlock in this scenario. cpu A holds clockevents_lock in clockevents_notify() with irqs enabled cpu B waits for clockevents_lock in clockevents_notify() with irqs disabled cpu C doing set_mtrr() which will try to rendezvous of all the cpus. This will result in C and A come to the rendezvous point and waiting for B. B is stuck forever waiting for the spinlock and thus not reaching the rendezvous point. Fix the clockevents code so that clockevents_lock is taken with interrupts disabled and thus avoid the above deadlock. Also call lapic_timer_propagate_broadcast() on the destination cpu so that we avoid calling smp_call_function() in the clockevents notifier chain. This issue left us wondering if we need to change the MTRR rendezvous logic to use stop machine logic (instead of smp_call_function) or add a check in spinlock debug code to see if there are other spinlocks which gets taken under both interrupts enabled/disabled conditions. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: "Pallipadi Venkatesh" <venkatesh.pallipadi@intel.com> Cc: "Brown Len" <len.brown@intel.com> LKML-Reference: <1250544899.2709.210.camel@sbs-t61.sc.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds2009-08-251-1/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] ar7_wdt: fix path to ar7-specific headers
| * | | | [WATCHDOG] ar7_wdt: fix path to ar7-specific headersFlorian Fainelli2009-08-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AR7 is currently being resubmitted for mainline inclusion and we changed the path to the ar7-specific headers from ar7 to mach-ar7 to reflect the other MIPS-based boards header hierarchy. This patch will avoid any future compilation failure due to missing headers. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* | | | | tty: make sure to flush any pending work when halting the ldiscLinus Torvalds2009-08-251-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When I rewrote tty ldisc code to use proper reference counts (commits 65b770468e98 and cbe9352fa08f) in order to avoid a race with hangup, the test-program that Eric Biederman used to trigger the original problem seems to have exposed another long-standing bug: the hangup code did the 'tty_ldisc_halt()' to stop any buffer flushing activity, but unlike the other call sites it never actually flushed any pending work. As a result, if you get just the right timing, the pending work may be just about to execute (ie the timer has already triggered and thus cancel_delayed_work() was a no-op), when we then re-initialize the ldisc from under it. That, in turn, results in various random problems, usually seen as a NULL pointer dereference in run_timer_softirq() or a BUG() in worker_thread (but it can be almost anything). Fix it by adding the required 'flush_scheduled_work()' after doing the tty_ldisc_halt() (this also requires us to move the ldisc halt to before taking the ldisc mutex in order to avoid a deadlock with the workqueue executing do_tty_hangup, which requires the mutex). The locking should be cleaned up one day (the requirement to do this outside the ldisc_mutex is very annoying, and weakens the lock), but that's a larger and separate undertaking. Reported-by: Eric W. Biederman <ebiederm@xmission.com> Tested-by: Xiaotian Feng <xtfeng@gmail.com> Tested-by: Yanmin Zhang <yanmin_zhang@linux.intel.com> Tested-by: Dave Young <hidave.darkstar@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge branch 'fixes' of git://git.marvell.com/orionLinus Torvalds2009-08-241-1/+1
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'fixes' of git://git.marvell.com/orion: [ARM] Orion NAND: Make asm volatile avoid GCC pushing ldrd out of the loop [ARM] Kirkwood: enable eSATA on QNAP TS-219P [ARM] Kirkwood: __init requires linux/init.h
| * | | | | [ARM] Orion NAND: Make asm volatile avoid GCC pushing ldrd out of the loopSimon Kagstrom2009-08-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC 4.3.3 and 4.4.1 happily moves the dword load instruction out of the loop in orion_nand_read_buf. This patch makes the instruction volatile to avoid the issue. I've discussed this at gcc-help, refer to the thread at http://gcc.gnu.org/ml/gcc-help/2009-08/msg00187.html The early clobber is added to avoid the destination registers and the source register overlapping. Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net> Signed-off-by: Nicolas Pitre <nico@marvell.com>
* | | | | | Merge branch 'drm-fixes' of ↵Linus Torvalds2009-08-241-3/+9
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon/kms: Fix radeon_gem_busy_ioctl harder.
| * | | | | | drm/radeon/kms: Fix radeon_gem_busy_ioctl harder.Michel Dänzer2009-08-231-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was mixing up TTM placement values and flags. Signed-off-by: Michel Dänzer <daenzer@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* | | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-08-245-45/+85
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: ucb1400_ts - enable interrupt unconditionally Input: ucb1400_ts - enable ADC Filter Input: wacom - don't use on-stack memory for report buffers Input: iforce - support new revision of ACT LABS Force RS Input: joydev - decouple axis and button map ioctls from input constants
| * | | | | | | Input: ucb1400_ts - enable interrupt unconditionallyPavel Revak2009-08-211-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes, when using the touchscreen, it stops working till next restart and the following message is printed: ucb1400: unexpected IE_STATUS = 0x0 The following patch retriggers the touchscreen interrupt unconditionally. This prevents hanging of the touchscreen in case of bogus interrupt occurence. Signed-off-by: Pavel Revak <palo@bielyvlk.sk> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | | | | | | Input: ucb1400_ts - enable ADC FilterMarek Vasut2009-08-211-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables ADC filtering on UCB1400 codec by default. The benefit from this change is mostly on some Colibri boards where the ADCSYNC pin of the UCB1400 codec isn't connected causing the touchscreen to jitter very badly. This change has no visible effect on boards where the ADCSYNC pin is connected. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Tested-by: Palo Revak <palo@bielyvlk.sk> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | | | | | | Input: wacom - don't use on-stack memory for report buffersDmitry Torokhov2009-08-211-14/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tested-by: Martin Capitanio <martin@capitanio.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | | | | | | Input: iforce - support new revision of ACT LABS Force RSJiri Kosina2009-08-202-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reported-by: cemede@gmail.com Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | | | | | | Input: joydev - decouple axis and button map ioctls from input constantsStephen Kitt2009-08-121-27/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The KEY_MAX change in 2.6.28 changed the values of the JSIOCSBTNMAP and JSIOCGBTNMAP constants; software compiled with the old values no longer works with kernels following 2.6.28, because the ioctl switch statement no longer matches the values given by the software. This patch handles these ioctls independently of the length of data specified, and applies the same treatment to JSIOCSAXMAP and JSIOCGAXMAP which currently depend on ABS_MAX. Signed-off-by: Stephen Kitt <steve@sk2.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-08-2413-49/+73
|\ \ \ \ \ \ \ \ | | |_|_|_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: smc91x: let smc91x work well under netpoll pxaficp-ir: remove incorrect net_device_ops NET: llc, zero sockaddr_llc struct drivers/net: fixed drivers that support netpoll use ndo_start_xmit() netpoll: warning for ndo_start_xmit returns with interrupts enabled net: Fix Micrel KSZ8842 Kconfig description netfilter: xt_quota: fix wrong return value (error case) ipv6: Fix commit 63d9950b08184e6531adceb65f64b429909cc101 (ipv6: Make v4-mapped bindings consistent with IPv4) E100: fix interaction with swiotlb on X86. pkt_sched: Convert CBQ to tasklet_hrtimer. pkt_sched: Convert qdisc_watchdog to tasklet_hrtimer rtl8187: always set MSR_LINK_ENEDCA flag with RTL8187B ibm_newemac: emac_close() needs to call netif_carrier_off() net: fix ks8851 build errors net: Rename MAC platform driver for w90p910 platform yellowfin: Fix buffer underrun after dev_alloc_skb() failure orinoco: correct key bounds check in orinoco_hw_get_tkip_iv mac80211: fix todo lock
| * | | | | | | smc91x: let smc91x work well under netpollDongdong Deng2009-08-241-18/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NETPOLL requires that interrupts remain disabled in its callbacks. Using *_irq_save()/irq_restore() to replace *_irq_disable()/irq_enable() functions in NETPOLL's callbacks of smc91x, so that it doesn't enable interrupts when already disabled, and kgdboe/netconsole would work properly over smc91x. Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com> Acked-by: Nicolas Pitre <nico@cam.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | pxaficp-ir: remove incorrect net_device_opsMarek Vasut2009-08-241-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes broken pxaficp-ir. The problem was in incorrect net_device_ops being specified which prevented the driver from operating. The symptoms were: - failing ifconfig for IrLAN, resulting in SIOCSIFFLAGS: Cannot assign requested address - irattach working for IrCOMM, but the port stayed disabled Moreover this patch corrects missing sysfs device link. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | drivers/net: fixed drivers that support netpoll use ndo_start_xmit()Dongdong Deng2009-08-244-9/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NETPOLL API requires that interrupts remain disabled in netpoll_send_skb(). The use of "A functions set" in the NETPOLL API callbacks causes the interrupts to get enabled and can lead to kernel instability. The solution is to use "B functions set" to prevent the irqs from getting enabled while in netpoll_send_skb(). A functions set: local_irq_disable()/local_irq_enable() spin_lock_irq()/spin_unlock_irq() spin_trylock_irq()/spin_unlock_irq() B functions set: local_irq_save()/local_irq_restore() spin_lock_irqsave()/spin_unlock_irqrestore() spin_trylock_irqsave()/spin_unlock_irqrestore() Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com> Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | net: Fix Micrel KSZ8842 Kconfig descriptionAndreas Mohr2009-08-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andreas Mohr <andi@lisas.de> Acked-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | E100: fix interaction with swiotlb on X86.Krzysztof Hałasa2009-08-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | E100 places it's RX packet descriptors inside skb->data and uses them with bidirectional streaming DMA mapping. Data in descriptors is accessed simultaneously by the chip (writing status and size when a packet is received) and CPU (reading to check if the packet was received). This isn't a valid usage of PCI DMA API, which requires use of the coherent (consistent) memory for such purpose. Unfortunately e100 chips working in "simplified" RX mode have to store received data directly after the descriptor. Fixing the driver to conform to the API would require using unsupported "flexible" RX mode or receiving data into a coherent memory and using CPU to copy it to network buffers. This patch, while not yet making the driver conform to the PCI DMA API, allows it to work correctly on X86 with swiotlb (while not breaking other architectures). Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | Merge branch 'master' of ↵David S. Miller2009-08-211-4/+10
| |\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * | | | | | | rtl8187: always set MSR_LINK_ENEDCA flag with RTL8187BHerton Ronaldo Krzesinski2009-08-211-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RTL8187B always needs MSR_LINK_ENEDCA flag to be set even when it is in no link mode, otherwise it'll not be able to associate when this flag is not set after the change "mac80211: fix managed mode BSSID handling". By accident, setting BSSID of AP before association makes 8187B to successfuly associate even when ENEDCA flag isn't set, which was the case before the mac80211 change. But now the BSSID of AP we are trying to associate is only available after association is successful, and any attempt to associate without the needed flag doesn't work. Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Acked-by: Hin-Tak Leung <htl10@users.sourceforge.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | | | | | | | ibm_newemac: emac_close() needs to call netif_carrier_off()Petri Gynther2009-08-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When ibm_newemac netdev instance is shutdown with "ifconfig down", the netdev interface does not go properly down. netif_carrier_ok() keeps returning TRUE even after "ifconfig down". The problem can be seen when ibm_newemac instances are slaves of a bonding interface. The bonding interface code uses netif_carrier_ok() to determine the link status of its slaves. When ibm_newemac slave is shutdown with "ifconfig down", the bonding interface won't detect any link status change because netif_carrier_ok() keeps returning TRUE. Signed-off-by: Petri Gynther <pgynther@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | net: fix ks8851 build errorsRandy Dunlap2009-08-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix build errors due to missing Kconfig select of CRC32: ks8851.c:(.text+0x7d2ee): undefined reference to `crc32_le' ks8851.c:(.text+0x7d2f5): undefined reference to `bitrev32' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-03 18:34:56 +0100