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2011-03-23drm/i915: Fix use after free within tracepointChris Wilson1-2/+2
Detected by scripts/coccinelle/free/kfree.cocci. Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Keith Packard <[email protected]>
2011-03-23drm/i915: Restore missing command flush before interrupt on BLT ringChris Wilson2-61/+55
We always skipped flushing the BLT ring if the request flush did not include the RENDER domain. However, this neglects that we try to flush the COMMAND domain after every batch and before the breadcrumb interrupt (to make sure the batch is indeed completed prior to the interrupt firing and so insuring CPU coherency). As a result of the missing flush, incoherency did indeed creep in, most notable when using lots of command buffers and so potentially rewritting an active command buffer (i.e. the GPU was still executing from it even though the following interrupt had already fired and the request/buffer retired). As all ring->flush routines now have the same preconditions, de-duplicate and move those checks up into i915_gem_flush_ring(). Fixes gem_linear_blit. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35284 Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> Tested-by: [email protected]
2011-03-23drm/i915: Disable pagefaults along execbuffer relocation fast pathChris Wilson1-4/+17
Along the fast path for relocation handling, we attempt to copy directly from the user data structures whilst holding our mutex. This causes lockdep to warn about circular lock dependencies if we need to pagefault the user pages. [Since when handling a page fault on a mmapped bo, we need to acquire the struct mutex whilst already holding the mm semaphore, it is then verboten to acquire the mm semaphore when already holding the struct mutex. The likelihood of the user passing in the relocations contained in a GTT mmaped bo is low, but conceivable for extreme pathology.] In order to force the mm to return EFAULT rather than handle the pagefault, we therefore need to disable pagefaults across the relocation fast path. Signed-off-by: Chris Wilson <[email protected]> Cc: [email protected] Reviewed-by: Daniel Vetter <[email protected]>
2011-03-23drm/i915: Fix computation of pitch for dumb bo creatorChris Wilson1-1/+1
Cc: Dave Airlie <[email protected]> Signed-off-by: Chris Wilson <[email protected]>
2011-03-23drm/i915: report correct render clock frequencies on SNBJesse Barnes2-5/+5
Fix up the debug file to report the right frequencies. On SNB, we program the PCU with a frequency ratio, which is multiplied by 100MHz on the CPU side. But GFX only runs at half that, so report it as such to avoid confusion. Signed-off-by: Jesse Barnes <[email protected]> Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Keith Packard <[email protected]>
2011-03-23drm/i915/dp: Correct the order of deletion for ghost eDP devicesTakashi Iwai1-2/+2
The order of the calls does matter indeed. Swapping the call order of intel_dp_destroy() and intel_dp_encoder_destroy() fixes the problem. This is because i2c_del_adapter unregisters the device which parent is intel_connector, and connectors are removed in intel_dp_destroy(). Thus intel_dp_encoder_destroy() must be called before intel_dp_destroy(). Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=24822 Signed-off-by: Takashi Iwai <[email protected]> Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Keith Packard <[email protected]>
2011-03-23[S390] ccwgroup_driver: remove duplicate membersSebastian Ott5-12/+18
Remove the owner and name members of struct ccwgroup_driver and convert all drivers to store this data in the embedded struct device_driver. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2011-03-23[S390] ccw_bus_type: make it staticSebastian Ott2-4/+2
Make ccw_bus_type static. ccw_device drivers have to use ccw_driver_register. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2011-03-23[S390] ccw_driver: remove duplicate membersSebastian Ott13-27/+49
Remove the owner and name members of struct ccw_driver and convert all drivers to store this data in the embedded struct device_driver. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2011-03-23[S390] qdio: prevent handling of buffers if count is zeroJan Glauber1-1/+2
Exit do_QDIO early if the buffer count is zero to prevent side effects in the following functions. Signed-off-by: Jan Glauber <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2011-03-23drm/i915: Fix tiling corruption from pipelined fencingChris Wilson1-27/+17
... even though it was disabled. A mistake in the handling of fence reuse caused us to skip the vital delay of waiting for the object to finish rendering before changing the register. This resulted in us changing the fence register whilst the bo was active and so causing the blits to complete using the wrong stride or even the wrong tiling. (Visually the effect is that small blocks of the screen look like they have been interlaced). The fix is to wait for the GPU to finish using the memory region pointed to by the fence before changing it. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34584 Cc: Andy Whitcroft <[email protected]> Cc: Daniel Vetter <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> [Note for 2.6.38-stable, we need to reintroduce the interruptible passing] Signed-off-by: Chris Wilson <[email protected]> Tested-by: Dave Airlie <[email protected]>
2011-03-23drm/i915: Re-enable self-refreshYuanhan Liu1-4/+1
A broken implementation of is_pot() prevented the detection of when a singular pipe was enabled. Eric Anholt pointed out the existence of is_power_of_2() so use that instead of our broken code! Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35402 Signed-off-by: Yuanhan Liu <[email protected]> Tested-by: [email protected] Reviewed-by: Keith Packard <[email protected]> Signed-off-by: Chris Wilson <[email protected]>
2011-03-23drm/i915: Prevent racy removal of request from client listHerton Ronaldo Krzesinski1-2/+4
When i915_gem_retire_requests_ring calls i915_gem_request_remove_from_client, the client_list for that request may already be removed in i915_gem_release. So we may call twice list_del(&request->client_list), resulting in an oops like this report: [126167.230394] BUG: unable to handle kernel paging request at 00100104 [126167.230699] IP: [<f8c2ce44>] i915_gem_retire_requests_ring+0xd4/0x240 [i915] [126167.231042] *pdpt = 00000000314c1001 *pde = 0000000000000000 [126167.231314] Oops: 0002 [#1] SMP [126167.231471] last sysfs file: /sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/BAT1/current_now [126167.231901] Modules linked in: snd_seq_dummy nls_utf8 isofs btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs exportfs reiserfs cryptd aes_i586 aes_generic binfmt_misc vboxnetadp vboxnetflt vboxdrv parport_pc ppdev snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep arc4 snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq uvcvideo videodev snd_timer snd_seq_device joydev iwlagn iwlcore mac80211 snd cfg80211 soundcore i915 drm_kms_helper snd_page_alloc psmouse drm serio_raw i2c_algo_bit video lp parport usbhid hid sky2 sdhci_pci ahci sdhci libahci [126167.232018] [126167.232018] Pid: 1101, comm: Xorg Not tainted 2.6.38-6-generic-pae #34-Ubuntu Gateway MC7833U / [126167.232018] EIP: 0060:[<f8c2ce44>] EFLAGS: 00213246 CPU: 0 [126167.232018] EIP is at i915_gem_retire_requests_ring+0xd4/0x240 [i915] [126167.232018] EAX: 00200200 EBX: f1ac25b0 ECX: 00000040 EDX: 00100100 [126167.232018] ESI: f1a2801c EDI: e87fc060 EBP: ef4d7dd8 ESP: ef4d7db0 [126167.232018] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [126167.232018] Process Xorg (pid: 1101, ti=ef4d6000 task=f1ba6500 task.ti=ef4d6000) [126167.232018] Stack: [126167.232018] f1a28000 f1a2809c f1a28094 0058bd97 f1aa2400 f1a2801c 0058bd7b 0058bd85 [126167.232018] f1a2801c f1a28000 ef4d7e38 f8c2e995 ef4d7e30 ef4d7e60 c14d1ebc f6b3a040 [126167.232018] f1522cc0 000000db 00000000 f1ba6500 ffffffa1 00000000 00000001 f1a29214 [126167.232018] Call Trace: Unfortunately the call trace reported was cut, but looking at debug symbols the crash is at __list_del, when probably list_del is called twice on the same request->client_list, as the dereferenced value is LIST_POISON1 + 4, and by looking more at the debug symbols before list_del call it should have being called by i915_gem_request_remove_from_client And as I can see in the code, it seems we indeed have the possibility to remove a request->client_list twice, which would cause the above, because we do list_del(&request->client_list) on both i915_gem_request_remove_from_client and i915_gem_release As Chris Wilson pointed out, it's indeed the case: "(...) I had thought that the actual insertion/deletion was serialised under the struct mutex and the intention of the spinlock was to protect the unlocked list traversal during throttling. However, I missed that i915_gem_release() is also called without struct mutex and so we do need the double check for i915_gem_request_remove_from_client()." This change does the required check to avoid the duplicate remove of request->client_list. Bugzilla: http://bugs.launchpad.net/bugs/733780 Cc: [email protected] # 2.6.38 Signed-off-by: Herton Ronaldo Krzesinski <[email protected]> Signed-off-by: Chris Wilson <[email protected]>
2011-03-23drm/i915: skip redundant operations whilst enabling pipes and planesChris Wilson1-8/+16
If the pipe or plane is already enabled, then we do not need to enable it again and can skip the delay. Similarly if it is already disabled when we want to disable it, we can also skip it. This fixes a regression from b24e717988, which caused the LVDS output on one PineView machine to become corrupt after changing orientation several times. References: https://bugs.freedesktop.org/show_bug.cgi?id=34601 Cc: Jesse Barnes <[email protected]> Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Keith Packard <[email protected]> Tested-by: [email protected]
2011-03-23drm/i915: Remove surplus POSTING_READs before wait_for_vblankChris Wilson1-8/+0
... as wait_for_vblank (and friends) will do a flush of the MMIO writes anyway. References: https://bugs.freedesktop.org/show_bug.cgi?id=34601 Cc: Jesse Barnes <[email protected]> Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Keith Packard <[email protected]> Reviewed-by: Jesse Barnes <[email protected]>
2011-03-23Merge branch 'sysdev' into releaseLen Brown3-29/+8
2011-03-23Merge branch 'linus' into releaseLen Brown2799-142244/+255881
Conflicts: arch/x86/kernel/acpi/sleep.c Signed-off-by: Len Brown <[email protected]>
2011-03-23Merge branch 'battery-sysfs-notifier' into releaseLen Brown1-0/+22
2011-03-23Merge branch 'reset' into releaseLen Brown2-10/+14
2011-03-23Merge commit 'v2.6.38' into releaseLen Brown133-520/+1152
2011-03-23Merge branch 'bugfix-thermal' into releaseLen Brown1-1/+2
2011-03-23Merge branch 'misc' into releaseLen Brown3-16/+18
2011-03-23ACPI: minor printk format change in acpi_padNaga Chumbalkar1-1/+1
Minor format change. Signed-off-by: Naga Chumbalkar <[email protected]> Signed-off-by: Len Brown <[email protected]>
2011-03-23ACPI: make acpi_pad /sys output more readableNaga Chumbalkar1-4/+7
Make /sys output from acpi_pad more readable. Before the fix: # cat idlecpus idlepct rrtime 00000000510 After the fix: # cat idlecpus idlepct rrtime 00000000 5 10 Signed-off-by: Naga Chumbalkar <[email protected]> Signed-off-by: Len Brown <[email protected]>
2011-03-23drm/radeon/kms: prefer legacy pll algo for tv-outAlex Deucher1-1/+5
ntsc seems to work fine with either algo, some pal TVs seem pickier. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=30832 Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected] Signed-off-by: Dave Airlie <[email protected]>
2011-03-22ACPI: Make sure the FADT is at least rev 2 before using the reset registerMatthew Garrett1-0/+5
The reset register was only introduced with version 2 of the FADT, so we should check that the FADT revision before trusting its contents. Signed-off-by: Matthew Garrett <[email protected]> Signed-off-by: Len Brown <[email protected]>
2011-03-22ACPI: Bug compatibility for Windows on the ACPI reboot vectorMatthew Garrett1-5/+4
Windows ignores the bit_offset and bit_width, despite the spec requiring that they be validated. Drop the checks so that we match this behaviour. Windows also goes straight for the keyboard controller if the ACPI reboot fails, so we shouldn't sleep if we're still alive. Signed-off-by: Matthew Garrett <[email protected]> Signed-off-by: Len Brown <[email protected]>
2011-03-22ACPICA: Fix access width for reset vectorMatthew Garrett1-5/+5
Section 4.7.3.6 of the ACPI specification requires that the register width of the reset vector be 8 bits. Windows simply hardcodes the access to be a byte and ignores the width provided in the FADT, so make sure that we do the same. Signed-off-by: Matthew Garrett <[email protected]> Signed-off-by: Len Brown <[email protected]>
2011-03-22ACPI battery: fribble sysfs files from a resume notifierKyle McMartin1-0/+22
Commit da8aeb92 re-poked the battery on resume, but Linus reports that it broke his eee and partially reverted it in b23fffd7. Unfortunately this also results in my x201s giving crack values until the sysfs files are poked again. In the revert message, it was suggested that we poke it from a PM notifier, so let's do that. With this in place, I haven't noticed the units going nutty on my gnome-power-manager across a dozen suspends or so... Signed-off-by: Kyle McMartin <[email protected]> Acked-by: Rafael J. Wysocki <[email protected]> Signed-off-by: Len Brown <[email protected]>
2011-03-22Merge branch 'button-cleanup' into releaseLen Brown1-103/+60
2011-03-22ACPI button: remove unused procfs I/FZhang Rui1-103/+60
Remove unused ACPI button procfs interface. Only /proc/acpi/button/lid/LID/state remains. Signed-off-by: Zhang Rui <[email protected]> Signed-off-by: Len Brown <[email protected]>
2011-03-22Merge branch 'next' of ↵Linus Torvalds12-1242/+1902
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (66 commits) avr32: at32ap700x: fix typo in DMA master configuration dmaengine/dmatest: Pass timeout via module params dma: let IMX_DMA depend on IMX_HAVE_DMA_V1 instead of an explicit list of SoCs fsldma: make halt behave nicely on all supported controllers fsldma: reduce locking during descriptor cleanup fsldma: support async_tx dependencies and automatic unmapping fsldma: fix controller lockups fsldma: minor codingstyle and consistency fixes fsldma: improve link descriptor debugging fsldma: use channel name in printk output fsldma: move related helper functions near each other dmatest: fix automatic buffer unmap type drivers, pch_dma: Fix warning when CONFIG_PM=n. dmaengine/dw_dmac fix: use readl & writel instead of __raw_readl & __raw_writel avr32: at32ap700x: Specify DMA Flow Controller, Src and Dst msize dw_dmac: Setting Default Burst length for transfers as 16. dw_dmac: Allow src/dst msize & flow controller to be configured at runtime dw_dmac: Changing type of src_master and dest_master to u8. dw_dmac: Pass Channel Priority from platform_data dw_dmac: Pass Channel Allocation Order from platform_data ...
2011-03-22zlib: slim down zlib_deflate() workspace when possibleJim Keniston1-1/+1
Instead of always creating a huge (268K) deflate_workspace with the maximum compression parameters (windowBits=15, memLevel=8), allow the caller to obtain a smaller workspace by specifying smaller parameter values. For example, when capturing oops and panic reports to a medium with limited capacity, such as NVRAM, compression may be the only way to capture the whole report. In this case, a small workspace (24K works fine) is a win, whether you allocate the workspace when you need it (i.e., during an oops or panic) or at boot time. I've verified that this patch works with all accepted values of windowBits (positive and negative), memLevel, and compression level. Signed-off-by: Jim Keniston <[email protected]> Cc: Herbert Xu <[email protected]> Cc: David Miller <[email protected]> Cc: Chris Mason <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22pps: remove unreachable codeAlexander Gordeev1-5/+0
Remove code enabled only when CONFIG_PREEMPT_RT is turned on because it is not used in the vanilla kernel. Signed-off-by: Alexander Gordeev <[email protected]> Cc: john stultz <[email protected]> Cc: Rodolfo Giometti <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22pnp: only assign IORESOURCE_DMA if CONFIG_ISA_DMA_API is enabledDavid Rientjes3-6/+10
IORESOURCE_DMA cannot be assigned without utilizing the interface provided by CONFIG_ISA_DMA_API, specifically request_dma() and free_dma(). Thus, there's a strict dependency on the config option and limits IORESOURCE_DMA only to architectures that support ISA-style DMA. ia64 is not one of those architectures, so pnp_check_dma() no longer needs to be special-cased for that architecture. pnp_assign_resources() will now return -EINVAL if IORESOURCE_DMA is attempted on such a kernel. Signed-off-by: David Rientjes <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Russell King <[email protected]> Cc: "Luck, Tony" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22rtc: add real-time clock driver for NVIDIA TegraAndrew Chew3-0/+499
This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <[email protected]> Acked-by: Alessandro Zummo <[email protected]> Acked-by: Wan ZongShun <[email protected]> Acked-by: Jon Mayo <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/rtc/rtc-ds1511.c: world-writable sysfs nvram fileVasiliy Kulikov1-1/+1
Don't allow everybogy to write to NVRAM. Signed-off-by: Vasiliy Kulikov <[email protected]> Cc: Andy Sharp <[email protected]> Cc: Alessandro Zummo <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/rtc/rtc-isl1208.c: add alarm supportRyan Mallon1-5/+171
Add alarm/wakeup support to rtc isl1208 driver Signed-off-by: Ryan Mallon <[email protected]> Cc: Alessandro Zummo <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22rtc: convert DS1374 to dev_pm_opsMark Brown1-6/+13
There is a general move to replace bus-specific PM ops with dev_pm_ops in order to facilitate core improvements. Do this conversion for DS1374. Signed-off-by: Mark Brown <[email protected]> Cc: Alessandro Zummo <[email protected]> Cc: john stultz <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/mmc/host/omap_hsmmc.c: use resource_size()Chris Ball1-4/+3
Use resource_size(). Signed-off-by: Chris Ball <[email protected]> Cc: Madhusudhan Chikkature <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/mmc/host/omap.c: use resource_size()Chris Ball1-3/+3
Signed-off-by: Chris Ball <[email protected]> Cc: Jarkko Lavinen <[email protected]> Cc: Tony Lindgren <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22sigma-firmware: loader for Analog Devices' SigmaStudioMike Frysinger3-0/+128
Analog Devices' SigmaStudio can produce firmware blobs for devices with these DSPs embedded (like some audio codecs). Allow these device drivers to easily parse and load them. Signed-off-by: Mike Frysinger <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22kstrto*: converting strings to integers done (hopefully) rightAlexey Dobriyan1-3/+0
1. simple_strto*() do not contain overflow checks and crufty, libc way to indicate failure. 2. strict_strto*() also do not have overflow checks but the name and comments pretend they do. 3. Both families have only "long long" and "long" variants, but users want strtou8() 4. Both "simple" and "strict" prefixes are wrong: Simple doesn't exactly say what's so simple, strict should not exist because conversion should be strict by default. The solution is to use "k" prefix and add convertors for more types. Enter kstrtoull() kstrtoll() kstrtoul() kstrtol() kstrtouint() kstrtoint() kstrtou64() kstrtos64() kstrtou32() kstrtos32() kstrtou16() kstrtos16() kstrtou8() kstrtos8() Include runtime testsuite (somewhat incomplete) as well. strict_strto*() become deprecated, stubbed to kstrto*() and eventually will be removed altogether. Use kstrto*() in code today! Note: on some archs _kstrtoul() and _kstrtol() are left in tree, even if they'll be unused at runtime. This is temporarily solution, because I don't want to hardcode list of archs where these functions aren't needed. Current solution with sizeof() and __alignof__ at least always works. Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/dca/dca-core.c: use list_move() instead of list_del()/list_add() ↵Kirill A. Shutemov1-4/+2
combination Signed-off-by: Kirill A. Shutemov <[email protected]> Cc: Maciej Sosnowski <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/misc/pch_phub.c: add MODULE_DEVICE_TABLEAxel Lin1-0/+1
The device table is required to load modules based on modaliases. Signed-off-by: Axel Lin <[email protected]> Cc: Masayuki Ohtak <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/misc/ep93xx_pwm.c: world-writable sysfs filesVasiliy Kulikov1-3/+3
Don't allow everybody to change device settings. Signed-off-by: Vasiliy Kulikov <[email protected]> Acked-by: Hartley Sweeten <[email protected]> Cc: Matthieu Crapet <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/misc/atmel_tclib.c: fix a memory leakAxel Lin1-2/+2
request_mem_region() will call kzalloc to allocate memory for struct resource. release_resource() unregisters the resource but does not free the allocated memory, thus use release_mem_region() instead to fix the memory leak. Signed-off-by: Axel Lin <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/misc/hmc6352.c: fix wrong return value checking for i2c_master_recv()Axel Lin1-2/+2
i2c_master_recv() returns negative errno, or else the number of bytes read. Thus i2c_master_recv(client, i2c_data, 2) returns 2 instead of 1 in success case. [[email protected]: make `ret' signed] Signed-off-by: Axel Lin <[email protected]> Cc: Kalhan Trisal <[email protected]> Cc: Alan Cox <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22drivers/misc/apds9802als.c: put the device into runtime suspend after ↵Hong Liu1-7/+10
resume()/probe() is handled Put the device into runtime suspend after resume()/probe() is handled by the PM core and the device core code. No need to manually add them in each single driver. And correct the runtime state in remove(). Signed-off-by: Hong Liu <[email protected]> Signed-off-by: Alan Cox <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-22ST SPEAr: PCIE gadget suppportPratyush Anand3-0/+919
This is a configurable gadget. can be configured by configfs interface. Any IP available at PCIE bus can be programmed to be used by host controller.It supoorts both INTX and MSI. By default, the gadget is configured for INTX and SYSRAM1 is mapped to BAR0 with size 0x1000 Signed-off-by: Pratyush Anand <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Jesse Barnes <[email protected]> Cc: Viresh Kumar <[email protected]> Cc: Shiraz Hashim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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