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2009-07-10drm/i915: Fix for LVDS VBT change on IGDNGZhenyu Wang
IGDNG mobile chip's LVDS data block removes panel fitting register definition. So this fixes offset for LVDS timing block parsing. Thanks for Michael Fu to catch this. Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-10drm/i915: Zap the GTT mapping when transitioning from untiled to tiled.Eric Anholt
As of 52dc7d32b88156248167864f77a9026abe27b432, we could leave an old linear GTT mapping in place, so that apps trying to GTT-mapped write in tiled data wouldn't get the fence added, and garbage would get displayed. Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-10drm/i915: Refactor calls to unmap_mapping_rangeChris Wilson
As we call unmap_mapping_range() twice in identical fashion, refactor and attempt to explain why we need to call unmap_mapping_range(). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-10drm/i915: Avoid saving/restore the modesetting registers twice in KMS modeZhao Yakui
In KMS mode we now use the normal mode-setting paths to set the modes back to the current configuration, so we don't need to also run the more limited non-KMS implementation of modesetting for resume. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-10drm: Disable the unused connectors explicitly when resuming with KMS.Zhao Yakui
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Acked-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-10drm/i915: Restore the KMS modeset for every activated CRTCZhao Yakui
Restore the modeset for every activated CRTC in course of resume. This is realized by calling the function of drm_helper_resume_force_mode. Note: it is meaningful only for the KMS mode. https://bugs.freedesktop.org/show_bug.cgi?id=21719 https://bugs.freedesktop.org/show_bug.cgi?id=21708 https://bugs.freedesktop.org/show_bug.cgi?id=22285 https://bugs.freedesktop.org/show_bug.cgi?id=22263 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-10drm/i915: Fix harmless warning from patch merged after i2c rework.Eric Anholt
Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-10drm/i915: Disable GEM when a broken video BIOS takes up the whole aperture.Eric Anholt
This is seen on some G41 systems, where the BIOS will consume all but a few KB of the aperture. This should be bad for all operating systems, as it means that the OS can't dynamically manage memory between graphics and the rest of the system, and OSes that did static memory management statically add memory in addition to the BIOS allocation anyway. So, instead of working around it, just fail out verbosely. fd.o bug #21574 Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2009-07-09drm/i915: Check the LID device to decide whether the LVDS should be initializedZhao Yakui
On some boxes the mobile chipset is used and there is no LVDS device. In such case we had better not initialize the LVDS output device so that one pipe can be used for other output device. For example: E-TOP. But unfortunately the LVDS device is still initialized on the boxes based on mobile chipset in KMS mode. It brings that this pipe occupied by LVDS can't be used for other output device. After checking the acpidump we find that there is no LID device on such boxes. In such case we can use the LID device to decide whether the LVDS device should be initialized. If there is no LID device, we can think that there is no LVDS device. It is unnecessary to initialize the LVDS output device. If there exists the LID device, it will continue the current flowchart. Maybe on some boxes there is no LVDS device but the LID device is found. In such case it should be added to the quirk list. http://bugs.freedesktop.org/show_bug.cgi?id=21496 http://bugs.freedesktop.org/show_bug.cgi?id=21856 http://bugs.freedesktop.org/show_bug.cgi?id=21127 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> [anholt: squashed in style fixups] Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-07drm/i915: Move lock to more reasonable locationBen Gamari
Make this consistent with the unlock statement. Also fix a minor typo in debugfs formatting Signed-off-by: Ben Gamari <bgamari.foss@gmail.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-07drm/i915: Add gtt_offset to gem object list debugfs outputBen Gamari
This is quite useful for verifying that objects are actually mapped when they need to be. Signed-off-by: Ben Gamari <bgamari.foss@gmail.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-07drm/i915: Remove gtt_bound from drm_i915_gem_objectBen Gamari
This wasn't even used as far as I could tell and will only confuse people (like me). Signed-off-by: Ben Gamari <bgamari.foss@gmail.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-07drm/i915: Disable VGA output when doing DRM_MODE_DPMS_OFF.ling.ma@intel.com
Signed-off-by: Ma Ling <ling.ma@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-07drm/i915: crt fetch EDID by DVI-I converter on G4x platformling.ma@intel.com
Usually crt mainly get modes via GPIOA ports. However on G4X platform we need to probe possible ports for DVI-I, which could be wired to GPIOD, then fetch our desired EDID, i.e on DG45ID platform we successfully fetch EDID by GPIOD port. It fixed freedesktop.org bug #21084 Signed-off-by: Ma Ling <ling.ma@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-07drm/i915: Don't update display FIFO watermark on IGDNGZhenyu Wang
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-02drm/i915: Adjust DisplayPort clocks to use 96MHz referenceKeith Packard
For some reason, the DP clocks were based off a 100MHz reference instead of the standard 96MHz reference. This caused some DP monitors to fail to lock to the signal. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-01drm/i915: Make driver less chattyKeith Packard
Convert many printk calls to DRM_DEBUG calls to reduce kernel log noise for normal activities. Switch other printk calls to DRM_ERROR or DRM_INFO. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-01drm/i915: fix up a raw 64bit divideAndy Whitcroft
We are seeing compilation failures on i386 in some environments due to an undefined reference as below: ERROR: "__udivdi3" [drivers/gpu/drm/i915/i915.ko] undefined! This is generated due to a raw 64 bit divide in the i915 driver. Fix up this raw divide. Signed-off-by: Andy Whitcroft <apw@canonical.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-01drm/i915: enable sdvo lvds scaling function.ling.ma@intel.com
Currently we implemented basic sdvo lvds function, But except for sdvo lvds fixed mode, we can not switch to other modes, otherwise display get black. The patch handle three operations to enable sdvo lvds. At first duplicate sdvo fixed mode for adjustment, then according to fixed mode line valid all modes, at last adjust input mode to fit our requirement. Acked by Li Peng <peng.li@linux.intel.com> Signed-off-by: Ma Ling <ling.ma@intel.com> Reviewed-by: Ian Romanick <idr@freedesktop.org> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-01drm/i915: Set SSC frequency for 8xx chips correctlyling.ma@intel.com
All 8xx class chips have the 66/48 split, not just 855. Signed-off-by: Ma Ling <ling.ma@intel.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-01drm/i915: add FIFO watermark supportShaohua Li
This patch from jbarnes and myself adds FIFO watermark control to the driver. This is needed for both power saving features on new platforms with the so-called "big FIFO" and for controlling FIFO allocation between pipes in multi-head configurations. It's also necessary infrastructure to support things like framebuffer compression and configuration supportability checks (i.e. checking a configuration against available bandwidth). Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-01drm/i915: enable error detection & state collectionJesse Barnes
This patch enables error detection by enabling several types of error interrupts. When an error interrupt is received, the interrupt handler captures the error state; hopefully resulting in an accurate set of error data (error type, active head pointer, etc.). The new record is then available from sysfs. The current code will also dump the error state to the system log. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-06-30Merge branch 'kmemleak' of git://linux-arm.org/linux-2.6Linus Torvalds
* 'kmemleak' of git://linux-arm.org/linux-2.6: kmemleak: Inform kmemleak about pid_hash kmemleak: Do not warn if an unknown object is freed kmemleak: Do not report new leaked objects if the scanning was stopped kmemleak: Slightly change the policy on newly allocated objects kmemleak: Do not trigger a scan when reading the debug/kmemleak file kmemleak: Simplify the reports logged by the scanning thread kmemleak: Enable task stacks scanning by default kmemleak: Allow the early log buffer to be configurable.
2009-06-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dmLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: dm table: fix blk_stack_limits arg to use bytes not sectors dm exception store: really fix type lookup
2009-06-30Merge branch 'perfcounters-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (47 commits) perf report: Add --symbols parameter perf report: Add --comms parameter perf report: Add --dsos parameter perf_counter tools: Adjust only prelinked symbol's addresses perf_counter: Provide a way to enable counters on exec perf_counter tools: Reduce perf stat measurement overhead/skew perf stat: Use percentages for scaling output perf_counter, x86: Update x86_pmu after WARN() perf stat: Micro-optimize the code: memcpy is only required if no event is selected and !null_run perf stat: Improve output perf stat: Fix multi-run stats perf stat: Add -n/--null option to run without counters perf_counter tools: Remove dead code perf_counter: Complete counter swap perf report: Print sorted callchains per histogram entries perf_counter tools: Prepare a small callchain framework perf record: Fix unhandled io return value perf_counter tools: Add alias for 'l1d' and 'l1i' perf-report: Add bare minimum PERF_EVENT_READ parsing perf-report: Add modes for inherited stats and no-samples ...
2009-06-30Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: Add Fenghua Yu as temporary co-maintainer for ia64 [IA64] address compiler warnings perfmon.c/salinfo.c [IA64] Remove unnecessary semicolons [IA64] sprintf should not be used with same source & destination address
2009-06-30MN10300: Wire up new syscallsDavid Howells
Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30FRV: Wire up new syscallsDavid Howells
Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30hostfs: set maximum filesize in superblock for proper LFS supportWolfgang Illmeyer
Maximum file size for hostfs mounts defaults to 2GB, so bigger files cannot be read/written through hostfs. This patch initializes the maximum file size to MAX_LFS_SIZE. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13531 Signed-off-by: Wolfgang Illmeyer <wolfgang@illmeyer.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30floppy: fix lock imbalanceJiri Slaby
A crappy macro prevents us unlocking on a fail path. Expand the macro and unlock appropriatelly. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30bfin: delay IRQ registration until driver is readyMike Frysinger
Make sure we do not actually request the RTC IRQ until the device driver is fully ready to handle and process any interrupt. This way a spurious interrupt won't crash the system (which may happen if the bootloader was poking the RTC right before booting Linux). Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30atyfb: fix alignment for block writesVille Syrjala
Block writes require 64 byte alignment. Since block writes could be used with SGRAM or WRAM also refine the memory type detection to check for either type before deciding to use the 64 byte alignment. Signed-off-by: Ville Syrjala <syrjala@sci.fi> Tested-by: Mikulas Patocka <mpatocka@redhat.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30atyfb: fix HP OmniBook 500 reboot hangVille Syrjala
Apparently HP OmniBook 500's BIOS doesn't like the way atyfb reprograms the hardware. The BIOS will simply hang after a reboot. Fix the problem by restoring the hardware to it's original state on reboot. Signed-off-by: Ville Syrjala <syrjala@sci.fi> Cc: Mikulas Patocka <mpatocka@redhat.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30gpio: pl061: fix IRQ handling for GPIOs >= PL061_GPIO_NRBaruch Siach
IRQ handling is wrong for any GPIO >= PL061_GPIO_NR. Fix this by implementing and using a proper .to_irq method. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30gpio: pl061: fix probe error handling codeBaruch Siach
Note that IRQ has not been initialized when kmalloc() fails. Also, use DECLARE_BITMAP() to make the code clearer. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30x86: only clear node_states for 64bitYinghai Lu
Nathan reported that | commit 73d60b7f747176dbdff826c4127d22e1fd3f9f74 | Author: Yinghai Lu <yinghai@kernel.org> | Date: Tue Jun 16 15:33:00 2009 -0700 | | page-allocator: clear N_HIGH_MEMORY map before we set it again | | SRAT tables may contains nodes of very small size. The arch code may | decide to not activate such a node. However, currently the early boot | code sets N_HIGH_MEMORY for such nodes. These nodes therefore seem to be | active although these nodes have no present pages. | | For 64bit N_HIGH_MEMORY == N_NORMAL_MEMORY, so that works for 64 bit too unintentionally and incorrectly clears the cpuset.mems cgroup attribute on an i386 kvm guest, meaning that cpuset.mems can not be used. Fix this by only clearing node_states[N_NORMAL_MEMORY] for 64bit only. and need to do save/restore for that in find_zone_movable_pfn Reported-by: Nathan Lynch <ntl@pobox.com> Tested-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu>, Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30cpusets: document adding/removing cpus to cpuset elaboratelyNikanth Karthikesan
By writing a tasks's pid to the file, a process adds that task to that cgroup/cpuset. But to add a cpu/mem to a cpuset, the new list of cpus should be written to the cpuset.mems file which would replace the old list of cpus. Make this clearer in the documentation. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30mm: prevent balance_dirty_pages() from doing too much workRichard Kennedy
balance_dirty_pages can overreact and move all of the dirty pages to writeback unnecessarily. balance_dirty_pages makes its decision to throttle based on the number of dirty plus writeback pages that are over the calculated limit,so it will continue to move pages even when there are plenty of pages in writeback and less than the threshold still dirty. This allows it to overshoot its limits and move all the dirty pages to writeback while waiting for the drives to catch up and empty the writeback list. A simple fio test easily demonstrates this problem. fio --name=f1 --directory=/disk1 --size=2G -rw=write --name=f2 --directory=/disk2 --size=1G --rw=write --startdelay=10 This is the simplest fix I could find, but I'm not entirely sure that it alone will be enough for all cases. But it certainly is an improvement on my desktop machine writing to 2 disks. Do we need something more for machines with large arrays where bdi_threshold * number_of_drives is greater than the dirty_ratio ? Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30bsdacct: fix access to invalid filp in acct_on()Renaud Lottiaux
The file opened in acct_on and freshly stored in the ns->bacct struct can be closed in acct_file_reopen by a concurrent call after we release acct_lock and before we call mntput(file->f_path.mnt). Record file->f_path.mnt in a local variable and use this variable only. Signed-off-by: Renaud Lottiaux <renaud.lottiaux@kerlabs.com> Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30MAINTAINERS: STARFIRE/DURALAN updateJoe Perches
Ion's cs.columbia.edu email address no longer works. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Ion Badulescu <ionut@badula.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30kernel/resource.c: fix sign extension in reserve_setup()Zhang Rui
When the 32-bit signed quantities get assigned to the u64 resource_size_t, they are incorrectly sign-extended. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13253 Addresses http://bugzilla.kernel.org/show_bug.cgi?id=9905 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Reported-by: Leann Ogasawara <leann@ubuntu.com> Cc: Pierre Ossman <drzeus@drzeus.cx> Reported-by: <pablomme@googlemail.com> Tested-by: <pablomme@googlemail.com> Cc: <stable@kernel.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30spi: bitbang bugfix in message setupDavid Brownell
Bugfix to spi_bitbang infrastructure: make sure to always set transfer parameters on the first pass through the message's per-transfer loop. This can matter with drivers that replace the per-word or per-buffer transfer primitives, on busses with multiple SPI devices. Previously, this could have started messages using the settings left after previous messages. The problem was observed when a high speed chip (m25p80 type flash) was running very slowly because a low speed device (avr8 microcontroller) had previously used the bus. Similar faults could have driven the low speed device too fast, or used an unexpected word size. Acked-by: Steven A. Falco <sfalco@harris.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30fbdev: add mutex for fb_mmap lockingKrzysztof Helt
Add a mutex to avoid a circular locking problem between the mm layer semaphore and fbdev ioctl mutex through the fb_mmap() call. Also, add mutex to all places where smem_start and smem_len fields change so the mutex inside the fb_mmap() is actually used. Changing of these fields before calling the framebuffer_register() are not mutexed. This is 2.6.31 material. It removes one lockdep (fb_mmap() and register_framebuffer()) but there is still another one (fb_release() and register_framebuffer()). It also cleans up handling of the smem_start and smem_len fields used by mutexed section of the fb_mmap(). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30spi: add spi_master flag wordDavid Brownell
Add a new spi_master.flags word listing constraints relevant to that controller. Define the first constraint bit: a half duplex restriction. Include that constraint in the OMAP1 MicroWire controller driver. Have the mmc_spi host be the first customer of this flag. Its coding relies heavily on full duplex transfers, so it must fail when the underlying controller driver won't perform them. (The spi_write_then_read routine could use it too: use the temporarily-withdrawn full-duplex speedup unless this flag is set, in which case the existing code applies. Similarly, any spi_master implementing only SPI_3WIRE should set the flag.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30spi: new spi->mode bitsDavid Brownell
Add two new spi_device.mode bits to accomodate more protocol options, and pass them through to usermode drivers: * SPI_NO_CS ... a second 3-wire variant, where the chipselect line is removed instead of a data line; transfers are still full duplex. This obviously has STRONG protocol implications since the chipselect transitions can't be used to synchronize state transitions with the SPI master. * SPI_READY ... defines open drain signal that's pulled low to pause the clock. This defines a 5-wire variant (normal 4-wire SPI plus READY) and two 4-wire variants (READY plus each of the 3-wire flavors). Such hardware flow control can be a big win. There are ADC converters and flash chips that expose READY signals, but not many host controllers support it today. The spi_bitbang code should be changed to use SPI_NO_CS instead of its current nonportable hack. That's a mode most hardware can easily support (unlike SPI_READY). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: "Paulraj, Sandeep" <s-paulraj@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30dmapools: protect page_list walk in show_pools()Thomas Gleixner
show_pools() walks the page_list of a pool w/o protection against the list modifications in alloc/free. Take pool->lock to avoid stomping into nirvana. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30ext2: return -EIO not -ESTALE on directory traversal through deleted inodeBryan Donlan
ext2_iget() returns -ESTALE if invoked on a deleted inode, in order to report errors to NFS properly. However, in ext[234]_lookup(), this -ESTALE can be propagated to userspace if the filesystem is corrupted such that a directory entry references a deleted inode. This leads to a misleading error message - "Stale NFS file handle" - and confusion on the part of the admin. The bug can be easily reproduced by creating a new filesystem, making a link to an unused inode using debugfs, then mounting and attempting to ls -l said link. This patch thus changes ext2_lookup to return -EIO if it receives -ESTALE from ext2_iget(), as ext2 does for other filesystem metadata corruption; and also invokes the appropriate ext*_error functions when this case is detected. Signed-off-by: Bryan Donlan <bdonlan@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30elf: limit max map count to safe valueKAMEZAWA Hiroyuki
With ELF, at generating coredump, some more headers other than used vmas are added. When max_map_count == 65536, a core generated by following kinds of code can be unreadable because the number of ELF's program header is written in 16bit in Ehdr (please see elf.h) and the number overflows. == ... = mmap(); (munmap, mprotect, etc...) if (failed) abort(); == This can happen in mmap/munmap/mprotect/etc...which calls split_vma(). I think 65536 is not safe as _default_ and reduce it to 65530 is good for avoiding unexpected corrupted core. Anyway, max_map_count can be enlarged by sysctl if a user is brave.. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Jakub Jelinek <jakub@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30edac: add DDR3 memory type for MPC85xx EDACYang Shi
Since some new MPC85xx SOCs support DDR3 memory now, so add DDR3 memory type for MPC85xx EDAC. Signed-off-by: Yang Shi <yang.shi@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30parport/serial: add support for NetMos 9901 Multi-IO cardMichael Buesch
Add support for the PCI-Express NetMos 9901 Multi-IO card. 0001:06:00.0 Serial controller [0700]: NetMos Technology Device [9710:9901] (prog-if 02 [16550]) Subsystem: Device [a000:1000] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 65 Region 0: I/O ports at 0030 [size=8] Region 1: Memory at 80105000 (32-bit, non-prefetchable) [size=4K] Region 4: Memory at 80104000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: serial Kernel modules: 8250_pci 0001:06:00.1 Serial controller [0700]: NetMos Technology Device [9710:9901] (prog-if 02 [16550]) Subsystem: Device [a000:1000] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin B routed to IRQ 65 Region 0: I/O ports at 0020 [size=8] Region 1: Memory at 80103000 (32-bit, non-prefetchable) [size=4K] Region 4: Memory at 80102000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: serial Kernel modules: 8250_pci 0001:06:00.2 Parallel controller [0701]: NetMos Technology Device [9710:9901] (prog-if 03 [IEEE1284]) Subsystem: Device [a000:2000] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin C routed to IRQ 65 Region 0: I/O ports at 0010 [size=8] Region 1: I/O ports at <unassigned> Region 2: Memory at 80101000 (32-bit, non-prefetchable) [size=4K] Region 4: Memory at 80100000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: parport_pc Kernel modules: parport_pc [ 16.760181] PCI parallel port detected: 416c:0100, I/O at 0x812010(0x0), IRQ 65 [ 16.760225] parport0: PC-style at 0x812010, irq 65 [PCSPP,TRISTATE,EPP] [ 16.851842] serial 0001:06:00.0: enabling device (0004 -> 0007) [ 16.883776] 0001:06:00.0: ttyS0 at I/O 0x812030 (irq = 65) is a ST16650V2 [ 16.893832] serial 0001:06:00.1: enabling device (0004 -> 0007) [ 16.926537] 0001:06:00.1: ttyS1 at I/O 0x812020 (irq = 65) is a ST16650V2 Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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