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* thinkpad-acpi: remove uneeded tp_features.hotkey tests in hotkey_exitHenrique de Moraes Holschuh2009-09-201-10/+8
| | | | | | | | | | hotkey_exit() is only called if hotkey_init() finished sucessfully, or by direct calls inside hotkey_init(). The tp_features.hotkey test is always true, and just adds to the confusion, remove it. Also, avoid calling hotkey_mask_set() when it won't do anything useful. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: don't leave ERR_PTR() pointers aroundHenrique de Moraes Holschuh2009-09-201-1/+3
| | | | | | | | | | | | backlight_device_register returns ERR_PTR() in case of problems, and the current code would leave that ERR_PTR in ibm_backlight_device. The current code paths won't touch it in that situation, but that could change. Make sure to set ibm_backlight_device to NULL in the error path. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad_acpi: fix rfkill memory leak on unloadCorentin Chary2009-09-191-0/+1
| | | | | | | | rfkill_unregister() should always be followed by rfkill_destroy() Signed-off-by: Corentin Chary <corentincj@iksaif.net> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: report brightness events when requiredHenrique de Moraes Holschuh2009-09-191-11/+19
| | | | | | | | | | | | | | | | | | | | | Report KEY_BRIGHTNESSUP and KEY_BRIGHTNESSDOWN input events when the ThinkPad is in "passive brightness control" mode (because either we or ACPI video touched _BCL), and ACPI video is not processing these events by itself. This happens only on Lenovo ThinkPads with ACPI video support, when operating with the ACPI video driver in acpi_backlight=vendor mode. Issuing these events is the right thing to do, and will work around bugzilla #13368, if userspace is properly configured and actively handles these events. For other ThinkPads, and when ACPI video is handling brightness changes, thinkpad-acpi will continue NOT sending KEY_BRIGHTNESS* events by default. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: don't poll by default any of the reserved hotkeysHenrique de Moraes Holschuh2009-09-191-13/+15
| | | | | | | | | Init hotkey_source_mask late, so that we can make use of hotkey_reserved_mask to avoid polling any of the reserved hotkeys by default. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: Fix procfs hotkey reset commandHenrique de Moraes Holschuh2009-09-191-1/+2
| | | | | | | | | | | echo "reset" > /proc/acpi/ibm/hotkey should do something non-useless, so instead of setting it to Fn+F2, Fn+F3, Fn+F5, set it to hotkey_recommended_mask. It is not like it will survive for much longer, anyway. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: deprecate hotkey_bios_maskHenrique de Moraes Holschuh2009-09-191-0/+2
| | | | | | | | | | | | | | | | Some analysis of the ACPI DSDTs shows that the HKEY pre-enabled mask is always 0x80c (FN+F3,FN+F4 and FN+F12), which are the hotkeys that the second gen of HKEY firmware supported (the first gen didn't report any hotkeys, the second reported these tree hotkeys but had no mask support, and the third added mask support). So, this is probably some sort of backwards compatibility with older versions of the IBM ThinkVantage suite. We have no use for that, and I know of exactly ZERO users of that attribute, anyway. Start the process of getting rid of it. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: hotkey poll fixesHenrique de Moraes Holschuh2009-09-191-35/+73
| | | | | | | | | | | Fix some locking, avoid exiting the kthread before kthread_stop() is called on it, and clean up the hotkey poll routines a little bit. Also, restore bits in the firmware mask after hotkey_source_mask is changed. Without this, we leave events disabled... Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: be more strict when detecting a ThinkPadHenrique de Moraes Holschuh2009-09-191-9/+13
| | | | | | | | | Use stricter checks to decide that we're running on a supported ThinkPad. This should remove some possible false positives, although nobody ever bothered to report any. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: firmware version checksHenrique de Moraes Holschuh2009-09-191-0/+182
| | | | | | | | Use the quirk infrastructure to warn of outdated firmware and also of firmware versions that are known to cause problems. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* thinkpad-acpi: don't ask about brightness_mode for fw. 1V and 1RHenrique de Moraes Holschuh2009-09-191-4/+4
| | | | | | | | | | | | | | | X40 (firmware 1V) and T41 (firmware 1R) have been confirmed to work well with the new defaults, so we can stop pestering people to confirm that fact. For now, whitelist just these two firmware types. It is best to have at least one more firmware type confirmed for Radeon 9xxx and Intel GMA-2 ThinkPads before removing the confirmation requests entirely. Reported-by: Robert de Rooy <robert.de.rooy@gmail.com> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: stable@kernel.org Signed-off-by: Len Brown <len.brown@intel.com>
* aoe: allocate unused request_queue for sysfsEd Cashin2009-09-093-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andy Whitcroft reported an oops in aoe triggered by use of an incorrectly initialised request_queue object: [ 2645.959090] kobject '<NULL>' (ffff880059ca22c0): tried to add an uninitialized object, something is seriously wrong. [ 2645.959104] Pid: 6, comm: events/0 Not tainted 2.6.31-5-generic #24-Ubuntu [ 2645.959107] Call Trace: [ 2645.959139] [<ffffffff8126ca2f>] kobject_add+0x5f/0x70 [ 2645.959151] [<ffffffff8125b4ab>] blk_register_queue+0x8b/0xf0 [ 2645.959155] [<ffffffff8126043f>] add_disk+0x8f/0x160 [ 2645.959161] [<ffffffffa01673c4>] aoeblk_gdalloc+0x164/0x1c0 [aoe] The request queue of an aoe device is not used but can be allocated in code that does not sleep. Bruno bisected this regression down to cd43e26f071524647e660706b784ebcbefbd2e44 block: Expose stacked device queues in sysfs "This seems to generate /sys/block/$device/queue and its contents for everyone who is using queues, not just for those queues that have a non-NULL queue->request_fn." Addresses http://bugs.launchpad.net/bugs/410198 Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13942 Note that embedding a queue inside another object has always been an illegal construct, since the queues are reference counted and must persist until the last reference is dropped. So aoe was always buggy in this respect (Jens). Signed-off-by: Ed Cashin <ecashin@coraid.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Bruno Premont <bonbons@linux-vserver.org> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* i915: disable interrupts before tearing down GEM stateLinus Torvalds2009-09-081-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reinette Chatre reports a frozen system (with blinking keyboard LEDs) when switching from graphics mode to the text console, or when suspending (which does the same thing). With netconsole, the oops turned out to be BUG: unable to handle kernel NULL pointer dereference at 0000000000000084 IP: [<ffffffffa03ecaab>] i915_driver_irq_handler+0x26b/0xd20 [i915] and it's due to the i915_gem.c code doing drm_irq_uninstall() after having done i915_gem_idle(). And the i915_gem_idle() path will do i915_gem_idle() -> i915_gem_cleanup_ringbuffer() -> i915_gem_cleanup_hws() -> dev_priv->hw_status_page = NULL; but if an i915 interrupt comes in after this stage, it may want to access that hw_status_page, and gets the above NULL pointer dereference. And since the NULL pointer dereference happens from within an interrupt, and with the screen still in graphics mode, the common end result is simply a silently hung machine. Fix it by simply uninstalling the irq handler before idling rather than after. Fixes http://bugzilla.kernel.org/show_bug.cgi?id=13819 Reported-and-tested-by: Reinette Chatre <reinette.chatre@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drm/i915: fix mask bits settingZhenyu Wang2009-09-083-1/+3
| | | | | | | | | | | | | eDP is exclusive connector too, and add missing crtc_mask setting for TV. This fixes http://bugzilla.kernel.org/show_bug.cgi?id=14139 Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Reported-and-tested-by: Carlos R. Mafra <crmafra2@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'drm-fixes' of ↵Linus Torvalds2009-09-075-69/+70
|\ | | | | | | | | | | | | 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: add LTE/GTE discard + rv515 two sided stencil register.
| * drm/radeon/kms: add LTE/GTE discard + rv515 two sided stencil register.Dave Airlie2009-09-075-69/+70
| | | | | | | | | | | | | | | | | | | | | | This adds some rv350+ register for LTE/GTE discard, and enables the rv515 two sided stencil register. It also disables the DEPTHXY_OFFSET register which can be used to workaround the CS checker. Moves rs690 to proper place in rs600 and uses correct table on rs600. Signed-off-by: Dave Airlie <airlied@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-09-071-1/+1
|\ \ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: gianfar: Fix build.
| * | gianfar: Fix build.David S. Miller2009-09-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reported by Michael Guntsche <mike@it-loops.com> -------------------- Commit 38bddf04bcfe661fbdab94888c3b72c32f6873b3 gianfar: gfar_remove needs to call unregister_netdev() breaks the build of the gianfar driver because "dev" is undefined in this function. To quickly test rc9 I changed this to priv->ndev but I do not know if this is the correct one. -------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6Linus Torvalds2009-09-071-0/+1
|\ \ \ | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6: pcmcia: add CNF-CDROM-ID for ide
| * | | pcmcia: add CNF-CDROM-ID for ideWolfram Sang2009-08-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes this report: http://article.gmane.org/gmane.linux.kernel.pcmcia.devel/2228/ Reported-by: John McGrath <john@john-mcgrath.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-09-073-6/+31
|\ \ \ \ | |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: agp/intel: support for new chip variant of IGDNG mobile drm/i915: Unref old_obj on get_fence_reg() error path drm/i915: increase default latency constant (v2 w/comment)
| * | | agp/intel: support for new chip variant of IGDNG mobileZhenyu Wang2009-09-021-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New variant of IGDNG mobile chip has new host bridge id. [anholt: Note that this new PCI ID doesn't impact the DRM, which doesn't care about the PCI ID of the bridge] Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
| * | | drm/i915: Unref old_obj on get_fence_reg() error pathChris Wilson2009-09-021-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remember to release the local reference if we fail to wait on the rendering. (Also whilst in the vicinity add some whitespace so that the phasing of the operations is clearer.) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Eric Anholt <eric@anholt.net>
| * | | drm/i915: increase default latency constant (v2 w/comment)Jesse Barnes2009-09-021-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some i915/i945 platforms have a fairly high memory latency in certain situations, so increase our constant a bit to avoid FIFO underruns. The effect should be positive on other platforms as well; we'll have a bit more insurance against a busy memory subsystem due to the extra FIFO entries. Fixes fdo bug #23368. Needed for 2.6.31. Tested-by: Sven Arvidsson <sa@whiz.se> Tested-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-09-053-6/+20
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: sbp2: fix freeing of unallocated memory firewire: ohci: fix Ricoh R5C832, video reception firewire: ohci: fix Agere FW643 and multiple cameras firewire: core: fix crash in iso resource management
| * | | | firewire: sbp2: fix freeing of unallocated memoryStefan Richter2009-09-051-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a target writes invalid status (typically status of a command that already timed out), firewire-sbp2 attempts to put away an ORB that doesn't exist. https://bugzilla.redhat.com/show_bug.cgi?id=519772 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | | firewire: ohci: fix Ricoh R5C832, video receptionStefan Richter2009-09-051-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In dual-buffer DMA mode, no video frames are ever received from R5C832 by libdc1394. Fallback to packet-per-buffer DMA works reliably. http://thread.gmane.org/gmane.linux.kernel.firewire.devel/13393/focus=13476 Reported-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | | firewire: ohci: fix Agere FW643 and multiple camerasStefan Richter2009-09-051-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An Agere FW643 OHCI 1.1 card works fine for video reception from one camera but fails early if receiving from two cameras. After a short while, no IR IRQ events occur and the context control register does not react anymore. This happens regardless whether both IR DMA contexts are dual-buffer or one is dual-buffer and the other packet-per-buffer. This can be worked around by disabling dual buffer DMA mode entirely. http://sourceforge.net/mailarchive/message.php?msg_name=4A7C0594.2020208%40gmail.com (Reported by Samuel Audet.) In another report (by Jonathan Cameron), an FW643 works OK with two cameras in dual buffer mode. Whether this is due to different chip revisions or different usage patterns (different video formats) is not yet clear. However, as far as the current capabilities of firewire-core's isochronous I/O interface are concerned, simply switching off dual-buffer on non-working and working FW643s alike is not a problem in practice. We only need to revisit this issue if we are going to enhance the interface, e.g. so that applications can explicitly choose modes. Reported-by: Samuel Audet <samuel.audet@gmail.com> Reported-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | | firewire: core: fix crash in iso resource managementStefan Richter2009-09-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a regression due to post 2.6.30 commit "firewire: core: do not DMA-map stack addresses" 6fdc03709433ccc2005f0f593ae9d9dd04f7b485. As David Moore noted, a previously correct sizeof() expression became wrong since the commit changed its argument from an array to a pointer. This resulted in an oops in ohci_cancel_packet in the shared workqueue thread's context when an isochronous resource was to be freed. Reported-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
* | | | | Merge git://git.infradead.org/~dwmw2/mtd-2.6.31Linus Torvalds2009-09-052-7/+10
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/~dwmw2/mtd-2.6.31: JFFS2: add missing verify buffer allocation/deallocation mtd: nftl: fix offset alignments mtd: nftl: write support is broken mtd: m25p80: fix null pointer dereference bug
| * | | | | mtd: nftl: fix offset alignmentsDimitri Gorokhovik2009-09-031-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Arithmetic conversion in the mask computation makes the upper word of the second argument passed down to mtd->read_oob(), be always 0 (assuming 'offs' being a 64-bit signed long long type, and 'mtd->writesize' being a 32-bit unsigned int type). This patch applies over the other one adding masking in nftl_write, "nftl: write support is broken". Signed-off-by: Dimitri Gorokhovik <dimitri.gorokhovik@free.fr> Cc: Tim Gardner <tim.gardner@canonical.com> Cc: Scott James Remnant <scott@canonical.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | | | mtd: nftl: write support is brokenDimitri Gorokhovik2009-09-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Write support is broken in NFTL. Fix it. Signed-off-by: <dimitri.gorokhovik@free.fr> Cc: Tim Gardner <tim.gardner@canonical.com> Cc: Scott James Remnant <scott@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | | | mtd: m25p80: fix null pointer dereference bugAnton Vorontsov2009-09-031-1/+1
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the following oops, observed with MTD_PARTITIONS=n: m25p80 spi32766.0: m25p80 (1024 Kbytes) Unable to handle kernel paging request for data at address 0x00000008 Faulting instruction address: 0xc03a54b0 Oops: Kernel access of bad area, sig: 11 [#1] Modules linked in: NIP: c03a54b0 LR: c03a5494 CTR: c01e98b8 REGS: ef82bb60 TRAP: 0300 Not tainted (2.6.31-rc4-00167-g4733fd3) MSR: 00029000 <EE,ME,CE> CR: 24022022 XER: 20000000 DEAR: 00000008, ESR: 00000000 TASK = ef82c000[1] 'swapper' THREAD: ef82a000 GPR00: 00000000 ef82bc10 ef82c000 0000002e 00001eb8 ffffffff c01e9824 00000036 GPR08: c054ed40 c0542a08 00001eb8 00004000 22022022 1001a1a0 3ff8fd00 00000000 GPR16: 00000000 00000001 00000000 00000000 ef82bddc c0530000 efbef500 ef8356d0 GPR24: 00000000 ef8356d0 00000000 efbf7a00 c0530ec4 ffffffed efbf5300 c0541f98 NIP [c03a54b0] m25p_probe+0x22c/0x354 LR [c03a5494] m25p_probe+0x210/0x354 Call Trace: [ef82bc10] [c03a5494] m25p_probe+0x210/0x354 (unreliable) [ef82bca0] [c024e37c] spi_drv_probe+0x2c/0x3c [ef82bcb0] [c01f1afc] driver_probe_device+0xa4/0x178 [ef82bcd0] [c01f06e8] bus_for_each_drv+0x6c/0xa8 [ef82bd00] [c01f1a34] device_attach+0x84/0xa8 ... Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-09-052-53/+68
|\ \ \ \ \ | | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: tc: Fix unitialized kernel memory leak pkt_sched: Revert tasklet_hrtimer changes. net: sk_free() should be allowed right after sk_alloc() gianfar: gfar_remove needs to call unregister_netdev() ipw2200: firmware DMA loading rework
| * | | | gianfar: gfar_remove needs to call unregister_netdev()Toru UCHIYAMA2009-08-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch solves the problem that the Oops(BUG_ON) occurs by rmmod. # rmmod gianfar_driver ------------[ cut here ]------------ Kernel BUG at c01fec48 [verbose debug info unavailable] Oops: Exception in kernel mode, sig: 5 [#1] MPC837x MDS Modules linked in: gianfar_driver(-) usb_storage scsi_wait_scan NIP: c01fec48 LR: c01febf4 CTR: c01feba8 REGS: dec5bd60 TRAP: 0700 Tainted: G W (2.6.31-rc2) MSR: 00029032 <EE,ME,CE,IR,DR> CR: 22000424 XER: 20000000 TASK = dec4cac0[1135] 'rmmod' THREAD: dec5a000 GPR00: 00000002 dec5be10 dec4cac0 dfba1820 c035d444 c035d478 ffffffff 00000000 GPR08: 0000002b 00000001 dfba193c 00000001 22000424 10019b34 1ffcb000 00000000 GPR16: 10012008 00000000 bf82ebe0 100017ec bf82ebec bf82ebe8 bf82ebd0 00000880 GPR24: 00000000 bf82ebf0 c03532f0 c03532e4 c036b594 dfba183c dfba1800 dfba1820 NIP [c01fec48] free_netdev+0xa0/0xb8 LR [c01febf4] free_netdev+0x4c/0xb8 Call Trace: [dec5be10] [c01febf4] free_netdev+0x4c/0xb8 (unreliable) [dec5be30] [e105f290] gfar_remove+0x50/0x68 [gianfar_driver] [dec5be40] [c01ec534] of_platform_device_remove+0x30/0x44 [dec5be50] [c0181760] __device_release_driver+0x68/0xc8 [dec5be60] [c0181868] driver_detach+0xa8/0xac [dec5be80] [c0180814] bus_remove_driver+0x9c/0xd8 [dec5bea0] [c0181efc] driver_unregister+0x60/0x98 [dec5beb0] [c01ec650] of_unregister_driver+0x14/0x24 [dec5bec0] [e10631bc] gfar_exit+0x18/0x4bc [gianfar_driver] [dec5bed0] [c0047584] sys_delete_module+0x16c/0x228 [dec5bf40] [c00116bc] ret_from_syscall+0x0/0x38 --- Exception: c01 at 0xff3669c LR = 0x10000f34 Instruction dump: 409e0024 a07e00c0 7c63f050 4be74429 80010024 bba10014 38210020 7c0803a6 4e800020 68000003 3160ffff 7d2b0110 <0f090000> 38000004 387e01f0 901e01d4 ---[ end trace 8c595bcd37230a0f ]--- localhost kernel: ------------[ cut here ]------------ Signed-off-by: Toru UCHIYAMA uchiyama.toru@jp.fujitsu.com Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | Merge branch 'master' of ↵David S. Miller2009-08-281-53/+67
| |\ \ \ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * | | | ipw2200: firmware DMA loading reworkZhu Yi2009-08-281-53/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bartlomiej Zolnierkiewicz reported an atomic order-6 allocation failure for ipw2200 firmware loading in kernel 2.6.30. High order allocation is likely to fail and should always be avoided. The patch fixes this problem by replacing the original order-6 pci_alloc_consistent() with an array of order-1 pages from a pci pool. This utilized the ipw2200 DMA command blocks (up to 64 slots). The maximum firmware size support remains the same (64*8K). This patch fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=14016 Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | | | | | Merge branch 'fixes' of ↵Linus Torvalds2009-09-051-88/+7
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Re-enable cpufreq suspend and resume code
| * | | | | | [CPUFREQ] Re-enable cpufreq suspend and resume codeDominik Brodowski2009-09-011-88/+7
| | |_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 4bc5d3413503 is broken and causes regressions: (1) cpufreq_driver->resume() and ->suspend() were only called on __powerpc__, but you could set them on all architectures. In fact, ->resume() was defined and used before the PPC-related commit 42d4dc3f4e1e complained about in 4bc5d3413503. (2) Therfore, the resume functions in acpi_cpufreq and speedstep-smi would never be called. (3) This means speedstep-smi would be unusuable after suspend or resume. The _real_ problem was calling cpufreq_driver->get() with interrupts off, but it re-enabling interrupts on some platforms. Why is ->get() necessary? Some systems like to change the CPU frequency behind our back, especially during BIOS-intensive operations like suspend or resume. If such systems also use a CPU frequency-dependant timing loop, delays might be off by large factors. Therefore, we need to ascertain as soon as possible that the CPU frequency is indeed at the speed we think it is. You can do this two ways: either setting it anew, or trying to get it. The latter is what was done, the former also has the same IRQ issue. So, let's try something different: defer the checking to after interrupts are re-enabled, by calling cpufreq_update_policy() (via schedule_work()). Timings may be off until this later stage, so let's watch out for resume regressions caused by the deferred handling of frequency changes behind the kernel's back. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Dave Jones <davej@redhat.com>
* | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dmLinus Torvalds2009-09-0511-80/+182
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: dm snapshot: fix on disk chunk size validation dm exception store: split set_chunk_size dm snapshot: fix header corruption race on invalidation dm snapshot: refactor zero_disk_area to use chunk_io dm log: userspace add luid to distinguish between concurrent log instances dm raid1: do not allow log_failure variable to unset after being set dm log: remove incorrect field from userspace table output dm log: fix userspace status output dm stripe: expose correct io hints dm table: add more context to terse warning messages dm table: fix queue_limit checking device iterator dm snapshot: implement iterate devices dm multipath: fix oops when request based io fails when no paths
| * | | | | | dm snapshot: fix on disk chunk size validationMikulas Patocka2009-09-042-8/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix some problems seen in the chunk size processing when activating a pre-existing snapshot. For a new snapshot, the chunk size can either be supplied by the creator or a default value can be used. For an existing snapshot, the chunk size in the snapshot header on disk should always be used. If someone attempts to load an existing snapshot and has the 'default chunk size' option set, the kernel uses its default value even when it is incorrect for the snapshot being loaded. This patch ensures the correct on-disk value is always used. Secondly, when the code does use the chunk size stored on the disk it is prudent to revalidate it, so the code can exit cleanly if it got corrupted as happened in https://bugzilla.redhat.com/show_bug.cgi?id=461506 . Cc: stable@kernel.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm exception store: split set_chunk_sizeMikulas Patocka2009-09-042-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Break the function set_chunk_size to two functions in preparation for the fix in the following patch. Cc: stable@kernel.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm snapshot: fix header corruption race on invalidationMikulas Patocka2009-09-041-10/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a persistent snapshot fills up, a race can corrupt the on-disk header which causes a crash on any future attempt to activate the snapshot (typically while booting). This patch fixes the race. When the snapshot overflows, __invalidate_snapshot is called, which calls snapshot store method drop_snapshot. It goes to persistent_drop_snapshot that calls write_header. write_header constructs the new header in the "area" location. Concurrently, an existing kcopyd job may finish, call copy_callback and commit_exception method, that goes to persistent_commit_exception. persistent_commit_exception doesn't do locking, relying on the fact that callbacks are single-threaded, but it can race with snapshot invalidation and overwrite the header that is just being written while the snapshot is being invalidated. The result of this race is a corrupted header being written that can lead to a crash on further reactivation (if chunk_size is zero in the corrupted header). The fix is to use separate memory areas for each. See the bug: https://bugzilla.redhat.com/show_bug.cgi?id=461506 Cc: stable@kernel.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm snapshot: refactor zero_disk_area to use chunk_ioMikulas Patocka2009-09-041-19/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Refactor chunk_io to prepare for the fix in the following patch. Pass an area pointer to chunk_io and simplify zero_disk_area to use chunk_io. No functional change. Cc: stable@kernel.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm log: userspace add luid to distinguish between concurrent log instancesJonathan Brassow2009-09-043-12/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Device-mapper userspace logs (like the clustered log) are identified by a universally unique identifier (UUID). This identifier is used to associate requests from the kernel to a specific log in userspace. The UUID must be unique everywhere, since multiple machines may use this identifier when communicating about a particular log, as is the case for cluster logs. Sometimes, device-mapper/LVM may re-use a UUID. This is the case during pvmoves, when moving from one segment of an LV to another, or when resizing a mirror, etc. In these cases, a new log is created with the same UUID and loaded in the "inactive" slot. When a device-mapper "resume" is issued, the "live" table is deactivated and the new "inactive" table becomes "live". (The "inactive" table can also be removed via a device-mapper 'clear' command.) The above two issues were colliding. More than one log was being created with the same UUID, and there was no way to distinguish between them. So, sometimes the wrong log would be swapped out during the exchange. The solution is to create a locally unique identifier, 'luid', to go along with the UUID. This new identifier is used to determine exactly which log is being referenced by the kernel when the log exchange is made. The identifier is not universally safe, but it does not need to be, since create/destroy/suspend/resume operations are bound to a specific machine; and these are the operations that make up the exchange. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm raid1: do not allow log_failure variable to unset after being setJonathan Brassow2009-09-041-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a bug which was triggering a case where the primary leg could not be changed on failure even when the mirror was in-sync. The case involves the failure of the primary device along with the transient failure of the log device. The problem is that bios can be put on the 'failures' list (due to log failure) before 'fail_mirror' is called due to the primary device failure. Normally, this is fine, but if the log device failure is transient, a subsequent iteration of the work thread, 'do_mirror', will reset 'log_failure'. The 'do_failures' function then resets the 'in_sync' variable when processing bios on the failures list. The 'in_sync' variable is what is used to determine if the primary device can be switched in the event of a failure. Since this has been reset, the primary device is incorrectly assumed to be not switchable. The case has been seen in the cluster mirror context, where one machine realizes the log device is dead before the other machines. As the responsibilities of the server migrate from one node to another (because the mirror is being reconfigured due to the failure), the new server may think for a moment that the log device is fine - thus resetting the 'log_failure' variable. In any case, it is inappropiate for us to reset the 'log_failure' variable. The above bug simply illustrates that it can actually hurt us. Cc: stable@kernel.org Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm log: remove incorrect field from userspace table outputJonathan Brassow2009-09-041-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The output of 'dmsetup table' includes an internal field that should not be there. This patch removes it. To make the fix simpler, we first reorder a constructor argument The 'device size' argument is generated internally. Currently it is placed as the last space-separated word of the constructor string. However, we need to use a version of the string without this word, so we move it to the beginning instead so it is trivial to skip past it. We keep a copy of the arguments passed to userspace for creating a log, just in case we need to resend them. These are the same arguments that are desired in the STATUSTYPE_TABLE request, except for one. When creating the userspace log, the userspace daemon must know the size of the mirror, so that is added to the arguments given in the constructor table. We were printing this extra argument out as well, which is a mistake. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm log: fix userspace status outputJonathan Brassow2009-09-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix 'dmsetup table' output. There is a missing ' ' at the end of the string causing two words to run together. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm stripe: expose correct io hintsMike Snitzer2009-09-042-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set sensible I/O hints for striped DM devices in the topology infrastructure added for 2.6.31 for userspace tools to obtain via sysfs. Add .io_hints to 'struct target_type' to allow the I/O hints portion (io_min and io_opt) of the 'struct queue_limits' to be set by each target and implement this for dm-stripe. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | | | | dm table: add more context to terse warning messagesMike Snitzer2009-09-041-7/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A couple of recent warning messages make it difficult for the reader to determine exactly what is wrong. This patch adds more information to those messages. The messages were added by these commits: 5dea271b6d87bd1d79a59c1d5baac2596a841c37 ("dm table: pass correct dev area size to device_area_is_valid") ea9df47cc92573b159ef3b4fda516c32cba9c4fd ("dm table: fix blk_stack_limits arg to use bytes not sectors") The patch also corrects references to logical_block_size in printk format strings from %hu to %u. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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