- 23 Aug, 2009 3 commits
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Magnus Damm authored
This patch modifies the SuperH Mobile I2C driver to support Runtime PM. These changes is all that is needed for proper Runtime PM support in this driver. Driver callbacks for Runtime PM are empty because the device registers are always re-initialized after pm_runtime_get_sync(). Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch is V3 of the SuperH Mobile Runtime PM platform bus implentation matching Rafael's Runtime PM v16. The code gets invoked from the SuperH specific Runtime PM platform bus functions that override the weak symbols for: - platform_pm_runtime_suspend() - platform_pm_runtime_resume() - platform_pm_runtime_idle() This Runtime PM implementation performs two levels of power management. At the time of platform bus runtime suspend the clock to the device is stopped instantly. Later on if all devices within the power domain has their clocks stopped then the device driver ->runtime_suspend() callbacks are used to save hardware register state for each device. Device driver ->runtime_suspend() calls are scheduled from cpuidle context using platform_pm_runtime_suspend_idle(). When all devices have been fully suspended the processor is allowed to enter deep sleep from cpuidle. The runtime resume operation turns on clocks and also restores registers if needed. It is worth noting that the devices start in a suspended state and the device driver is responsible for calling runtime resume before accessing the actual hardware. In this particular platform bus implementation runtime resume is not allowed from interrupt context. Runtime suspend is however allowed from interrupt context as long as the synchronous functions are avoided. [ updated for v17 -- PFM. ] Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
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- 22 Aug, 2009 7 commits
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Magnus Damm authored
This patch adds default Runtime PM callbacks to the dev_pm_ops belonging to the platform bus. The callbacks are weak symbols that architecture specific code can override. Allows Runtime PM even though CONFIG_PM_SLEEP=n. Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Rafael J. Wysocki authored
Introduce a core framework for run-time power management of I/O devices. Add device run-time PM fields to 'struct dev_pm_info' and device run-time PM callbacks to 'struct dev_pm_ops'. Introduce a run-time PM workqueue and define some device run-time PM helper functions at the core level. Document all these things. Special thanks to Alan Stern for his help with the design and multiple detailed reviews of the pereceding versions of this patch and to Magnus Damm for testing feedback. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Magnus Damm <damm@igel.co.jp>
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Rafael J. Wysocki authored
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: check saved state before restore
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] mpt2sas: fix config request and diag reset deadlock [SCSI] mpt2sas: Bump driver version 01.100.04.00 [SCSI] mpt2sas: fix oops because drv data points to NULL on resume from hibernate [SCSI] mpt2sas: fix crash due to Watchdog is active while OS in standby mode [SCSI] mpt2sas: fix infinite loop inside config request [SCSI] mpt2sas: Excessive log info causes sas iounit page time out [SCSI] mpt2sas: Raid 10 Value is showing as Raid 1E in /va/log/messages [SCSI] mpt2sas: Expander fix oops saying "Already part of another port" [SCSI] mpt2sas: Introduced check for enclosure_handle to avoid crash
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Linus Torvalds authored
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Linus Torvalds authored
In commit a8e7d49a ("Fix race in create_empty_buffers() vs __set_page_dirty_buffers()"), I removed a test for a NULL page mapping unintentionally when some of the code inside __set_page_dirty() was moved to the callers. That removal generally didn't matter, since a filesystem would serialize truncation (which clears the page mapping) against writing (which marks the buffer dirty), so locking at a higher level (either per-page or an inode at a time) should mean that the buffer page would be stable. And indeed, nothing bad seemed to happen. Except it turns out that apparently reiserfs does something odd when under load and writing out the journal, and we have a number of bugzilla entries that look similar: http://bugzilla.kernel.org/show_bug.cgi?id=13556 http://bugzilla.kernel.org/show_bug.cgi?id=13756 http://bugzilla.kernel.org/show_bug.cgi?id=13876 and it looks like reiserfs depended on that check (the common theme seems to be "data=journal", and a journal writeback during a truncate). I suspect reiserfs should have some additional locking, but in the meantime this should get us back to the pre-2.6.29 behavior. Pattern-pointed-out-by: Roland Kletzing <devzero@web.de> Cc: stable@kernel.org (2.6.29 and 2.6.30) Cc: Jeff Mahoney <jeffm@suse.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 21 Aug, 2009 9 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6Linus Torvalds authored
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon: add GET_PARAM/INFO support for Z pipes drm/radeon/kms: add r100/r200 OQ support. drm: Fix sysfs device confusion. drm/radeon/kms: implement the bo busy ioctl properly.
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'btrfs' of git://git.kernel.dk/linux-2.6-block: btrfs: fix inode rbtree corruption
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Linus Torvalds authored
As noted in 83d349f3 ("x86: don't send an IPI to the empty set of CPU's"), some APIC's will be very unhappy with an empty destination mask. That commit added a WARN_ON() for that case, and avoided the resulting problem, but didn't fix the underlying reason for why those empty mask cases happened. This fixes that, by checking the result of 'cpumask_andnot()' of the current CPU actually has any other CPU's left in the set of CPU's to be sent a TLB flush, and not calling down to the IPI code if the mask is empty. The reason this started happening at all is that we started passing just the CPU mask pointers around in commit 4595f962 ("x86: change flush_tlb_others to take a const struct cpumask"), and when we did that, the cpumask was no longer thread-local. Before that commit, flush_tlb_mm() used to create it's own copy of 'mm->cpu_vm_mask' and pass that copy down to the low-level flush routines after having tested that it was not empty. But after changing it to just pass down the CPU mask pointer, the lower level TLB flush routines would now get a pointer to that 'mm->cpu_vm_mask', and that could still change - and become empty - after the test due to other CPU's having flushed their own TLB's. See http://bugzilla.kernel.org/show_bug.cgi?id=13933 for details. Tested-by: Thomas Björnell <thomas.bjornell@gmail.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
When 'and'ing two bitmasks (where 'andnot' is a variation on it), some cases want to know whether the result is the empty set or not. In particular, the TLB IPI sending code wants to do cpumask operations and determine if there are any CPU's left in the final set. So this just makes the bitmask (and cpumask) functions return a boolean for whether the result has any bits set. Cc: stable@kernel.org (2.6.30, needed by TLB shootdown fix) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
The default_send_IPI_mask_logical() function uses the "flat" APIC mode to send an IPI to a set of CPU's at once, but if that set happens to be empty, some older local APIC's will apparently be rather unhappy. So just warn if a caller gives us an empty mask, and ignore it. This fixes a regression in 2.6.30.x, due to commit 4595f962 ("x86: change flush_tlb_others to take a const struct cpumask"), documented here: http://bugzilla.kernel.org/show_bug.cgi?id=13933 which causes a silent lock-up. It only seems to happen on PPro, P2, P3 and Athlon XP cores. Most developers sadly (or not so sadly, if you're a developer..) have more modern CPU's. Also, on x86-64 we don't use the flat APIC mode, so it would never trigger there even if the APIC didn't like sending an empty IPI mask. Reported-by: Pavel Vilim <wylda@volny.cz> Reported-and-tested-by: Thomas Björnell <thomas.bjornell@gmail.com> Reported-and-tested-by: Martin Rogge <marogge@onlinehome.de> Cc: Mike Travis <travis@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alex Deucher authored
Needed for occlusion queries on rv530 chips. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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From: Nick Piggin authored
Node may not be inserted over existing node. This causes inode tree corruption and I was seeing crashes in inode_tree_del which I can not reproduce after this patch. The other way to fix this would be to tie inode lifetime in the rbtree with inode while not in freeing state. I had a look at this but it is not so trivial at this point. At least this patch gets things working again. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Chris Mason <chris.mason@oracle.com> Acked-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Dave Airlie authored
This adds the relocation necessary for OQ support on the r100/r200 chipsets. Signed-off-by: Dave Airlie <airlied@redhat.com>
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Thomas Hellstrom authored
The drm sysfs class suspend / resume methods could not distinguish between different device types wich could lead to illegal type casts. Use struct device_type and make sure the class suspend / resume callbacks are aware of those. There is no per device-type suspend / resume. Only new-style PM. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
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- 20 Aug, 2009 9 commits
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Dave Airlie authored
The previous patch assumes the ioctl already existed, when it actually didn't. It also didn't return the correct error code. Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://aeryn.fluff.org.uk/bjdooks/linuxLinus Torvalds authored
* 'i2c-fixes-rc6' of git://aeryn.fluff.org.uk/bjdooks/linux: i2c-stu300: I2C STU300 stability updates i2c-omap: Enable workaround for Errata 1.153 based on i2c-omap: ACK pending [R/X]DR and [R/X]RDY interrupts i2c-omap: Fix I2C status ACK
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Linus Walleij authored
- blk clk is enabled when an irq arrives. The clk should be enabled, but just to make sure. - All error bits are handled no matter state machine state - All irq's will run complete() except for irq's that wasn't an event. - No more looking into status registers just in case an interrupt has happend and the irq handle wasn't executed. - irq_disable/enable are now separete functions. - clk settings calculation changed to round upwards instead of downwards. - Number of address send attempts before giving up is increased to 12 from 10 since it most times take 8 tries before getting through. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Moiz Sonasath authored
Silicon Errata 1.153 has been fixed on OMAP 3630|4430 with the use of a later version of I2C IP block. The errata impacts OMAP 2420|2430|3430, enable the workaround for these based on I2C IP block revision number instead of OMAP CPU type Signed-off-by: Moiz Sonasath <m-sonasath@ti.com> Signed-off-by: Vikram Pandita <vikram.pandita@ti.com Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Moiz Sonasath authored
ACK any pending read/write interrupts before exiting the ISR either after completing the operation [ARDY interrupt] or in case of an error [NACK|AL interrupt] Signed-off-by: Moiz Sonasath <m-sonasath@ti.com> Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Nishanth Menon authored
I2C status ack for [RX]RDR and [RX]RDY could cause race conditions of clearing the event twice and a violation of the programing sequence as defined in TRM This patch fixes the same. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Moiz Sonasath <m-sonasath@ti.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Rafael J. Wysocki authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6Linus Torvalds authored
* 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Fix probe of Toshiba laptops with ALC268 codec ALSA: hda: add model for Intel DG45ID/DG45FC boards ALSA: hda: enable speaker output for Compaq 6530s/6531s
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Alek Du authored
Without the check, the config space may be filled with zeros. Though the driver should try to avoid call restoring before saving, but the pci layer also should check this. Also removes the existing check in pci_restore_standard_config, since it's superfluous with the new check in restore_state. Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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- 19 Aug, 2009 12 commits
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Takashi Iwai authored
There are many variants of Toshiba laptops with ALC268 codec, and it seems that a few of them don't work with model=toshiba preset since they have the secondary ALC268 codec just for HDMI output. This is a regression due to the previous clean-up work to merge all Toshiba quirk entries into a single check. This patch adds the identification of such laptops to apply the standard BIOS-probing method. Unfortunately, Toshiba laptops have all the same PCI SSID, so we need to check the codec SSID to identify each device. Tested-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: nilfs2: fix oopses with doubly mounted snapshots nilfs2: missing a read lock for segment writer in nilfs_attach_checkpoint()
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Anton Blanchard authored
Fix some issues with the AFS documentation, found when testing AFS on ppc64: - Update AFS features: reading/writing, local caching - Typo in kafs sysfs debug file - Use modprobe instead of insmod in example - Update IPs for grand.central.org Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6Linus Torvalds authored
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/kms: teardown crtc correctly when fb is destroyed. drm/kms/radeon: cleanup combios TV table like DDX. drm/radeon/kms: memset the allocated framebuffer before using it. drm/radeon/kms: although LVDS might be possible on crtc 1 don't do it. drm/radeon/kms: implement bo busy check + current domain drm/radeon/kms: cut down indirects in register accesses. drm/radeon/kms: Fix up vertical blank interrupt support. drm/radeon/kms: add rv530 R300_SU_REG_DEST + reloc for ZPASS_ADDR drm/edid: fixup detailed timings like the X server. drm/radeon/kms: Add specific rs690 authorized register table
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git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds authored
* 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Update Microblaze defconfigs microblaze: Use klimit instead of _end for memory init microblaze: Enable ppoll syscall microblaze: Sane handling of missing timer/intc in device tree microblaze: use the generic ack_bad_irq implementation
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Linus Torvalds authored
Merge branch 'perfcounters-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Make 'make html' work perf annotate: Fix segmentation fault perf_counter: Fix the PARISC build perf_counter: Check task on counter read IPI perf: Rename perf-examples.txt to examples.txt perf record: Fix typo in pid_synthesize_comm_event
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Wu Fengguang authored
The BIOS pin configs are in fact correct and shall not be overwritten. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Wu Fengguang authored
HP Compaq 6530s and 6531s internal speaker is silence or becomes silence within 1 minute after fresh boot. It is found that pin 0x1c must be set to PIN_OUT mode to make the speaker work. This is weird - line-in pin 0x1c and speaker pin 0x16 seem to be unrelated. The codec differences before/after patch are: @@ Node 0x17 [Pin Complex] wcaps 0x40020b: Pin Default 0x41a6e130: [N/A] Mic at Ext Rear Conn = Digital, Color = White DefAssociation = 0x3, Sequence = 0x0 Misc = NO_PRESENCE - Pin-ctls: 0x24: IN + Pin-ctls: 0x40: OUT @@ Node 0x1c [Pin Complex] wcaps 0x40018d: Pin Default 0x41813021: [N/A] Line In at Ext Rear Conn = 1/8, Color = Blue DefAssociation = 0x2, Sequence = 0x1 - Pin-ctls: 0x24: IN VREF_80 + Pin-ctls: 0x40: OUT VREF_HIZ Unsolicited: tag=00, enabled=0 Connection: 1 0x24 Tests show that it won't impact (external) Mic recording. Reported-by: "Lin, Ming M" <ming.m.lin@intel.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Dave Airlie authored
If userspace destroys a framebuffer that is in use on a crtc, don't just null it out, tear down the crtc properly so the hw gets turned off. Signed-off-by: Dave Airlie <airlied@redhat.com>
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Dave Airlie authored
The fallback case wasn't getting executed properly if there was no TV table, which my T42 M7 hasn't got. Signed-off-by: Dave Airlie <airlied@redhat.com>
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Dave Airlie authored
This gets rid of some ugliness, we shuold probably find a way for the GPU to zero this. Signed-off-by: Dave Airlie <airlied@redhat.com>
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Dave Airlie authored
LVDS always requests RMX_FULL, we need to fix it so that doesn't happen before we can enable LVDS on crtc 1. Signed-off-by: Dave Airlie <airlied@redhat.com>
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