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* PM / Hibernate: Move the first_sector out of swsusp_writeJiri Slaby2010-05-10
| | | | | | | | | | The first sector knowledge is swap-only specific. Move it into the swap handle. This will be needed for later non-swap specific code moving into snapshot.c. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl>
* PM / Hibernate: Separate block_ioJiri Slaby2010-05-10
| | | | | | | | Move block I/O operations to a separate file. It is because it will be used later not only by the swap writer. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Hibernate: Snapshot cleanupJiri Slaby2010-05-10
| | | | | | | | | | | | | Remove support of reads with offset. This means snapshot_read/write_next now does not accept count parameter. It allows to clean up the functions and snapshot handle which no longer needs to care about offsets. /dev/snapshot handler is converted to simple_{read_from,write_to}_buffer which take care of offsets. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* FS / libfs: Implement simple_write_to_bufferJiri Slaby2010-05-10
| | | | | | | | | | It will be used in suspend code and serves as an easy wrap around copy_from_user. Similar to simple_read_from_buffer, it takes care of transfers with proper lengths depending on available and count parameters and advances ppos appropriately. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Hibernate: document open(/dev/snapshot) side effectsPavel Machek2010-05-10
| | | | | | | | | | Opening and closing /dev/snapshot causes the kernel to carry out some hibernate preparations that should be documented. [rjw: Added the changelog.] Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Runtime: Add sysfs debug filesDominik Brodowski2010-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add a few sysfs files relating to runtime power management for advanced debug purposes: runtime_enabled: is runtime PM enabled for this device? States are "enabled", "disabled", "forbidden" or a combination of the latter two. runtime_status: what state is the device in currently? E.g., it reports "suspended" for runtime-suspended devices, and "active" for active devices. NOTE: if runtime_enabled returns "disabled", the value of this file may not reflect its physical state. runtime_usage: the runtime PM usage count of a device runtime_active_kids: the runtime PM children usage count of a device, or 0 if the ignore_children flag is set. Also, CONFIG_PM_SLEEP_ADVANCED_DEBUG is not defined in any Kconfig file, so replace it with CONFIG_PM_ADVANCED_DEBUG. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Improve device power management documentAlan Stern2010-05-10
| | | | | | | | Improve the device power management document after it's been updated by the previous patch. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Update device power management documentRafael J. Wysocki2010-05-10
| | | | | | | | | The device PM document, Documentation/power/devices.txt, is badly outdated and requires total rework to fit the current design of the PM framework. Make it more up to date. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com>
* PM: Allow runtime_suspend methods to call pm_schedule_suspend()Alan Stern2010-05-10
| | | | | | | | | | | | | | | | This patch (as1361) changes the runtime PM interface slightly; it allows suspend requests to be scheduled while the runtime_suspend method is running. If the method succeeds then the scheduled request is cancelled, whereas if the method fails then an idle notification is sent only if no request was scheduled. Being able to schedule suspend requests from within a runtime_suspend method is useful for drivers that need to test for idleness and suspend the device all while holding a single spinlock, or for drivers that want to check for idleness by polling. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: pm_wakeup - switch to using boolDmitry Torokhov2010-05-10
| | | | | | | | | Also change couple of stubs implemented as macros in !CONFIG_PM case in statinc inline functions to provide proper typechecking of arguments regardless of config. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* Merge branch 'fix/hda' of ↵Linus Torvalds2010-05-10
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: Revert "ALSA: hda/realtek: quirk for D945GCLF2 mainboard" ALSA: hda - add support for Lenovo ThinkPad X100e in conexant codec ALSA: hda - fix DG45ID SPDIF output
| * ALSA: Revert "ALSA: hda/realtek: quirk for D945GCLF2 mainboard"Stefan Lippers-Hollmann2010-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 7aee67466536bbf8bb44a95712c848a61c5a0acd. As it doesn't seem to be universally valid for all mainboard revisions of the D945GCLF2 and breaks snd-hda-intel/ snd-hda-codec-realtek on the Intel Corporation "D945GCLF2" (LF94510J.86A.0229.2009.0729.0209) mainboard. 00:1b.0 Audio device [0403]: Intel Corporation N10/ICH 7 Family High Definition Audio Controller [8086:27d8] (rev 01) Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de> Cc: <stable@kernel.org> [2.6.33] Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * ALSA: hda - add support for Lenovo ThinkPad X100e in conexant codecAndrej Gelenberg2010-05-10
| | | | | | | | | | | | | | Ideapad quirks working for my ThinkPad X100e (microphone is not tested). Signed-off-by: Andrej Gelenberg <andrej.gelenberg@udo.edu> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * ALSA: hda - fix DG45ID SPDIF outputWu Fengguang2010-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts part of commit 52dc438606d1e, in order to fix a regression: broken SPDIF output on Intel DG45FC motherboard (IDT 92HD73E1X5 codec). --- DG45FC-IDT-codec-2.6.32 (SPDIF OK) +++ DG45FC-IDT-codec-2.6.33 (SPDIF broken) Node 0x22 [Pin Complex] wcaps 0x400301: Stereo Digital Pincap 0x00000010: OUT - Pin Default 0x40f000f0: [N/A] Other at Ext N/A - Conn = Unknown, Color = Unknown - DefAssociation = 0xf, Sequence = 0x0 - Pin-ctls: 0x00: + Pin Default 0x014510a0: [Jack] SPDIF Out at Ext Rear + Conn = Optical, Color = Black + DefAssociation = 0xa, Sequence = 0x0 + Pin-ctls: 0x40: OUT Connection: 3 0x25* 0x20 0x21 Node 0x23 [Pin Complex] wcaps 0x400301: Stereo Digital Pincap 0x00000010: OUT - Pin Default 0x01451140: [Jack] SPDIF Out at Ext Rear + Pin Default 0x074510b0: [Jack] SPDIF Out at Ext Rear Panel Conn = Optical, Color = Black - DefAssociation = 0x4, Sequence = 0x0 - Misc = NO_PRESENCE - Pin-ctls: 0x40: OUT + DefAssociation = 0xb, Sequence = 0x0 + Pin-ctls: 0x00: Connection: 3 0x26* 0x20 0x21 Cc: <stable@kernel.org> Cc: Alexey Fisher <bug-track@fisher-privat.net> Tested-by: David Härdeman <david@hardeman.nu> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | autofs4-2.6.34-rc1 - fix link_count usageIan Kent2010-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit 1f36f774b2 ("Switch !O_CREAT case to use of do_last()") in 2.6.34-rc1 autofs direct mounts stopped working. This is caused by current->link_count being 0 when ->follow_link() is called from do_filp_open(). I can't work out why this hasn't been seen before Als patch series. This patch removes the autofs dependence on current->link_count. Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-05-10
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: fix suspend crash by moving initializations earlier HID: sony: fix sony_set_operational_bt HID: ntrig: Remove unused macro, TripleTap and QuadTap HID: ntrig: TipSwitch for single touch mode touch. HID: hidraw: fix numbered reports HID: wacom: remove annoying non-error printk HID: ntrig: Emit TOUCH with DOUBLETAP for single touch HID: add support for cymotion master solar keyboard HID: ntrig: explain firmware quirk HID: fix N-trig touch panel with recent firmware
| * | HID: fix suspend crash by moving initializations earlierAlan Stern2010-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Although the usbhid driver allocates its usbhid structure in the probe routine, several critical fields in that structure don't get initialized until usbhid_start(). However if report descriptor parsing fails then usbhid_start() is never called. This leads to problems during system suspend -- the system will freeze. This patch (as1378) fixes the bug by moving the initialization statements up into usbhid_probe(). Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Bruno Prémont <bonbons@linux-vserver.org> Tested-By: Bruno Prémont <bonbons@linux-vserver.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: sony: fix sony_set_operational_btAntonio Ospite2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't send the report type as part of the data, this prevents the controller from going into the operational state at all. This is completely equivalent to what the code originally meant to accomplish: as per in net/bluetooth/hidp/core.c::hidp_output_raw_report(), by using HID_FEATURE_REPORT here, what will be actually sent is (HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE) which is exactly 0x53. Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Signed-off-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: ntrig: Remove unused macro, TripleTap and QuadTapRafi Rubin2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | Removing the higher number taps. Their usage was incorrect and even if correct they should not be used for a touch screen. _MT_ events should be used to communicate multiple fingers. Signed-off-by: Rafi Rubin <rafi@seas.upenn.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: ntrig: TipSwitch for single touch mode touch.Rafi Rubin2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Include TipSwitch in the touch detection decision for some single touch firmwares. Confidence and InRange are high for all finger events including those used to indicate the finger is no longer in contact with the sensor. Signed-off-by: Rafi Rubin <rafi@seas.upenn.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: hidraw: fix numbered reportsAlan Ott2010-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | Make hidraw not stick an extra byte on the beginning of an IN transfer when a HID device contains multiple reports. Signed-off-by: Alan Ott <alan@signal11.us> Acked-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: wacom: remove annoying non-error printkCory Fields2010-04-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is the only line printed on my "quiet" boot and seems completely unnecessary. Signed-off-by: Cory Fields <FOSS@AtlasTechnologiesInc.com> Signed-off-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: ntrig: Emit TOUCH with DOUBLETAP for single touchRafi Rubin2010-04-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I squelched TipSwitch in a recent patch which resulted in the loss of Touch events for single touch firmwares. This patch just puts Touch back in for single touch, and bundles it with DoubleTap (like the multitouch code). The two events are used to convey the same message to different drivers. Signed-off-by: Rafi Rubin <rafi@seas.upenn.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: add support for cymotion master solar keyboardRaphaël Doursenaud2010-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Support the solar version of the Cherry's cymotion keyboard line using existing cherry driver. Signed-off-by: Raphaël Doursenaud <rdoursenaud@free.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: ntrig: explain firmware quirkJiri Kosina2010-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 6549981bc54777c ("HID: fix N-trig touch panel with recent firmware") adds a quirk that is needed for devices with more recent firmware so that they become operational. As it's not directly obvious from the code why is it needed, a comment is worthwile. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | HID: fix N-trig touch panel with recent firmwareStephane Chatty2010-04-06
| | | | | | | | | | | | | | | | | | | | | | | | Added an init message that avoids device freeze with recent firmware. Signed-off-by: Stephane Chatty <chatty@enac.fr> Tested-by: Rafi Rubin <rafi@seas.upenn.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | Linux 2.6.34-rc7v2.6.34-rc7Linus Torvalds2010-05-09
| | |
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds2010-05-09
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] Retry commands with UNIT_ATTENTION sense codes to fix ext3/ext4 I/O error [SCSI] Enable retries for SYNCRONIZE_CACHE commands to fix I/O error [SCSI] scsi_debug: virtual_gb ignores sector_size [SCSI] libiscsi: regression: fix header digest errors [SCSI] fix locking around blk_abort_request() [SCSI] advansys: fix narrow board error path
| * | | [SCSI] Retry commands with UNIT_ATTENTION sense codes to fix ext3/ext4 I/O errorJames Bottomley2010-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's nastyness in the way we currently handle barriers (and discards): They're effectively filesystem commands, but they get processed as BLOCK_PC commands. Unfortunately BLOCK_PC commands are taken by SCSI to be SG_IO commands and the issuer expects to see and handle any returned errors, however trivial. This leads to a huge problem, because the block layer doesn't expect this to happen and any trivially retryable error on a barrier causes an immediate I/O error to the filesystem. The only real way to hack around this is to take the usual class of offending errors (unit attentions) and make them all retryable in the case of a REQ_HARDBARRIER. A correct fix would involve a rework of the entire block and SCSI submit system, and so is out of scope for a quick fix. Cc: Hannes Reinecke <hare@suse.de> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * | | [SCSI] Enable retries for SYNCRONIZE_CACHE commands to fix I/O errorHannes Reinecke2010-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some arrays are giving I/O errors with ext3 filesystems when SYNCHRONIZE_CACHE gets a UNIT_ATTENTION. What is happening is that these commands have no retries, so the UNIT_ATTENTION causes the barrier to fail. We should be enable retries here to clear any transient error and allow the barrier to succeed. Signed-off-by: Hannes Reinecke <hare@suse.de> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * | | [SCSI] scsi_debug: virtual_gb ignores sector_sizeDouglas Gilbert2010-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the scsi_debug driver, the virtual_gb option ignores the sector_size, implicitly assuming that is 512 bytes. So if 'virtual_gb=1 sector_size=4096' the result is an 8 GB (virtual) disk. Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * | | [SCSI] libiscsi: regression: fix header digest errorsMike Christie2010-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a regression introduced with this commit: commit d3305f3407fa3e9452079ec6cc8379067456e4aa Author: Mike Christie <michaelc@cs.wisc.edu> Date: Thu Aug 20 15:10:58 2009 -0500 [SCSI] libiscsi: don't increment cmdsn if cmd is not sent in 2.6.32. When I moved the hdr->cmdsn after init_task, I added a bug when header digests are used. The problem is that the LLD may calculate the header digest in init_task, so if we then set the cmdsn after the init_task call we change what the digest will be calculated by the target. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * | | [SCSI] fix locking around blk_abort_request()Tejun Heo2010-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | blk_abort_request() expects queue lock to be held by the caller. Grab it before calling the function. Lack of this synchronization led to infinite loop on corrupt q->timeout_list. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@kernel.org Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * | | [SCSI] advansys: fix narrow board error pathHerton Ronaldo Krzesinski2010-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Error handling on advansys_board_found is fixed, because it's buggy in the case we have an ASC_NARROW_BOARD set and failure happens on AscInitAsc1000Driver step: it was freeing items of wrong struct in the dvc_var union of struct asc_board, which could lead to an oops in the case we set some of the fields in struct of narrow board as code was choosing to always freeing wide board fields, and not everything was being freed/released properly. Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | | | cpuidle: Fix incorrect optimizationArjan van de Ven2010-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 672917dcc78 ("cpuidle: menu governor: reduce latency on exit") added an optimization, where the analysis on the past idle period moved from the end of idle, to the beginning of the new idle. Unfortunately, this optimization had a bug where it zeroed one key variable for new use, that is needed for the analysis. The fix is simple, zero the variable after doing the work from the previous idle. During the audit of the code that found this issue, another issue was also found; the ->measured_us data structure member is never set, a local variable is always used instead. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Corrado Zoccolo <czoccolo@gmail.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds2010-05-07
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://neil.brown.name/md: md: restore ability of spare drives to spin down. md/raid6: Fix raid-6 read-error correction in degraded state
| * | | | md: restore ability of spare drives to spin down.NeilBrown2010-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some time ago we stopped the clean/active metadata updates from being written to a 'spare' device in most cases so that it could spin down and say spun down. Device failure/removal etc are still recorded on spares. However commit 51d5668cb2e3fd1827a55 broke this 50% of the time, depending on whether the event count is even or odd. The change log entry said: This means that the alignment between 'odd/even' and 'clean/dirty' might take a little longer to attain, how ever the code makes no attempt to create that alignment, so it could take arbitrarily long. So when we find that clean/dirty is not aligned with odd/even, force a second metadata-update immediately. There are already cases where a second metadata-update is needed immediately (e.g. when a device fails during the metadata update). We just piggy-back on that. Reported-by: Joe Bryant <tenminjoe@yahoo.com> Signed-off-by: NeilBrown <neilb@suse.de> Cc: stable@kernel.org
| * | | | md/raid6: Fix raid-6 read-error correction in degraded stateGabriele A. Trombetti2010-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix: Raid-6 was not trying to correct a read-error when in singly-degraded state and was instead dropping one more device, going to doubly-degraded state. This patch fixes this behaviour. Tested-by: Janos Haar <janos.haar@netcenter.hu> Signed-off-by: Gabriele A. Trombetti <g.trombetti.lkrnl1213@logicschema.com> Reported-by: Janos Haar <janos.haar@netcenter.hu> Signed-off-by: NeilBrown <neilb@suse.de> Cc: stable@kernel.org
* | | | | Merge branch 'urgent' of ↵Linus Torvalds2010-05-07
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 * 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: fix compilation after 16bit state locking changes pcmcia: order userspace suspend and resume requests pcmcia: avoid pccard_validate_cis failure in resume callpath
| * | | | | pcmcia: fix compilation after 16bit state locking changesMarc Zyngier2010-05-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 04de0816 (pcmcia: pcmcia_dev_present bugfix) broke the deprecated ioctl layer. Fix it by getting rid of references to unexisting fields. Signed-off-by: Marc Zyngier <maz@misterjones.org> Reported-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| * | | | | pcmcia: order userspace suspend and resume requestsDominik Brodowski2010-05-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Assert that userspace suspend and resume requests appearing (almost) immediately are executed in the following order: suspend, resume. This should result in "pccardctl reset" behaving the same as before. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| * | | | | pcmcia: avoid pccard_validate_cis failure in resume callpathDominik Brodowski2010-05-03
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the PCMCIA CIS changed before a resume event (e.g. due to a card exchange while being suspended, possibly also during a call to "pccardctl reset"), also set the function count to zero so that the subsequent call to pccard_validate_cis() does not fail. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* | | | | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2010-05-07
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: blk-cgroup: Fix an RCU warning in blkiocg_create() blk-cgroup: Fix RCU correctness warning in cfq_init_queue() drbd: don't expose failed local READ to upper layers
| * | | | | blk-cgroup: Fix an RCU warning in blkiocg_create()Li Zefan2010-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with CONFIG_PROVE_RCU=y, a warning can be triggered: # mount -t cgroup -o blkio xxx /mnt # mkdir /mnt/subgroup ... kernel/cgroup.c:4442 invoked rcu_dereference_check() without protection! ... To fix this, we avoid caling css_depth() here, which is a bit simpler than the original code. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | | | blk-cgroup: Fix RCU correctness warning in cfq_init_queue()Vivek Goyal2010-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is necessary to be in an RCU read-side critical section when invoking css_id(), so this patch adds one to blkiocg_add_blkio_group(). This is actually a false positive, because this is called at initialization time and hence always refers to the root cgroup, which cannot go away. [ 103.790505] =================================================== [ 103.790509] [ INFO: suspicious rcu_dereference_check() usage. ] [ 103.790511] --------------------------------------------------- [ 103.790514] kernel/cgroup.c:4432 invoked rcu_dereference_check() without protection! [ 103.790517] [ 103.790517] other info that might help us debug this: [ 103.790519] [ 103.790521] [ 103.790521] rcu_scheduler_active = 1, debug_locks = 1 [ 103.790524] 4 locks held by bash/4422: [ 103.790526] #0: (&buffer->mutex){+.+.+.}, at: [<ffffffff8114befa>] sysfs_write_file+0x3c/0x144 [ 103.790537] #1: (s_active#102){.+.+.+}, at: [<ffffffff8114bfa5>] sysfs_write_file+0xe7/0x144 [ 103.790544] #2: (&q->sysfs_lock){+.+.+.}, at: [<ffffffff812263b1>] queue_attr_store+0x49/0x8f [ 103.790552] #3: (&(&blkcg->lock)->rlock){......}, at: [<ffffffff8122e4db>] blkiocg_add_blkio_group+0x2b/0xad [ 103.790560] [ 103.790561] stack backtrace: [ 103.790564] Pid: 4422, comm: bash Not tainted 2.6.34-rc4-blkio-second-crash #81 [ 103.790567] Call Trace: [ 103.790572] [<ffffffff81068f57>] lockdep_rcu_dereference+0x9d/0xa5 [ 103.790577] [<ffffffff8107fac1>] css_id+0x44/0x57 [ 103.790581] [<ffffffff8122e503>] blkiocg_add_blkio_group+0x53/0xad [ 103.790586] [<ffffffff81231936>] cfq_init_queue+0x139/0x32c [ 103.790591] [<ffffffff8121f2d0>] elv_iosched_store+0xbf/0x1bf [ 103.790595] [<ffffffff812263d8>] queue_attr_store+0x70/0x8f [ 103.790599] [<ffffffff8114bfa5>] ? sysfs_write_file+0xe7/0x144 [ 103.790603] [<ffffffff8114bfc6>] sysfs_write_file+0x108/0x144 [ 103.790609] [<ffffffff810f527f>] vfs_write+0xae/0x10b [ 103.790612] [<ffffffff81069863>] ? trace_hardirqs_on_caller+0x10c/0x130 [ 103.790616] [<ffffffff810f539c>] sys_write+0x4a/0x6e [ 103.790622] [<ffffffff81002b5b>] system_call_fastpath+0x16/0x1b [ 103.790625] Located-by: Miles Lane <miles.lane@gmail.com> Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | | | Merge branch 'for-jens' of git://git.drbd.org/linux-2.6-drbd into for-linusJens Axboe2010-05-04
| |\ \ \ \ \ | | |/ / / / | |/| | | |
| | * | | | drbd: don't expose failed local READ to upper layersLars Ellenberg2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix regression introduced in 8.3.3: commit a9b17323f2875f5d9b132c2b476a750bf44b10c7 Author: Lars Ellenberg <lars.ellenberg@linbit.com> Date: Wed Aug 12 15:18:33 2009 +0200 out-of-spinlock completion of master bio : (bio_rw(bio) == READA) ? read_completed_with_error : read_ahead_completed_with_error; is obviously not what was intended. No one noticed because of * page-cache at work, * local RAIDs Impact: Failed local READs are not retried remotely, but errored to upper layers, causing filesystems to remount read-only, or worse. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
* | | | | | Merge branch 'drm-linus' of ↵Linus Torvalds2010-05-07
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/ttm: Remove the ttm_bo_block_reservation() function. drm/ttm: Remove some leftover debug messages. drm/radeon: async event synchronization for drmWaitVblank
| * | | | | | drm/ttm: Remove the ttm_bo_block_reservation() function.Thomas Hellstrom2010-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's unused and buggy in its current form, since it can place a bo in the reserved state without removing it from lru lists. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | | | | drm/ttm: Remove some leftover debug messages.Thomas Hellstrom2010-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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