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* Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-ledsLinus Torvalds2009-01-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds: ledtrig-timer - on deactivation hardware blinking should be disabled leds: Add suspend/resume to the core class leds: Add WM8350 LED driver leds: leds-pcs9532 - Move i2c work to a workqueque leds: leds-pca9532 - fix memory leak and properly handle errors leds: Fix wrong loop direction on removal in leds-ams-delta leds: fix Cobalt Raq LED dependency leds: Fix sparse warning in leds-ams-delta leds: Fixup kdoc comment to match parameter names leds: Make header variable naming consistent leds: eds-pca9532: mark pca9532_event() static leds: ALIX.2 LEDs driver
| * leds: ledtrig-timer - on deactivation hardware blinking should be disabledRodolfo Giometti2009-01-08
| | | | | | | | | | Signed-off-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: Add suspend/resume to the core classRichard Purdie2009-01-08
| | | | | | | | | | | | | | Add suspend/resume to the core class and remove all the now unneeded code from various drivers. Originally the class code couldn't support suspend/resume but since class_device can there is no reason for each driver doing its own suspend/resume anymore.
| * leds: Add WM8350 LED driverMark Brown2009-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The voltage and current regulators on the WM8350 AudioPlus PMIC can be used in concert to provide a power efficient LED driver. This driver implements support for this within the standard LED class. Platform initialisation code should configure the LED hardware in the init callback provided by the WM8350 core driver. The callback should use wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and wm8350_dcdc_set_slot() to configure the operating parameters of the regulators for their hardware and then then use wm8350_register_led() to instantiate the LED driver. This driver was originally written by Liam Girdwood, though it has been extensively modified since then. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: leds-pcs9532 - Move i2c work to a workquequeRiku Voipio2009-01-08
| | | | | | | | | | | | | | | | | | Apparently these might be called under atomic context, and i2c operations may sleep. BUG found by Ross Burton <ross@burtonini.com> Signed-off-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: leds-pca9532 - fix memory leak and properly handle errorsSven Wegener2009-01-08
| | | | | | | | | | | | | | | | | | When the registration fails, we need to release the memory we allocated. Also we need to save the error from led_classdev_register and propagate it up, else we'll return success, even if we failed. Signed-off-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: Fix wrong loop direction on removal in leds-ams-deltaSven Wegener2009-01-08
| | | | | | | | | | | | | | We want to go upwards, not downwards. Signed-off-by: Sven Wegener <sven.wegener@stealer.net> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: fix Cobalt Raq LED dependencyYoichi Yuasa2009-01-08
| | | | | | | | | | | | | | | | Cobalt Raq LEDs require LEDS_CLASS=y. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: Fix sparse warning in leds-ams-deltaSven Wegener2009-01-08
| | | | | | | | | | | | | | drivers/leds/leds-ams-delta.c:154:2: warning: returning void-valued expression Signed-off-by: Sven Wegener <sven.wegener@stealer.net> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: Fixup kdoc comment to match parameter namesSven Wegener2009-01-08
| | | | | | | | | | Signed-off-by: Sven Wegener <sven.wegener@stealer.net> Signed-off-by: Richard Purdie <rpurdie@intel.linux.com>
| * leds: Make header variable naming consistentWolfram Sang2009-01-08
| | | | | | | | | | | | | | | | There is one place where the struct led_classdev as the function argument is named differently. Fix it. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: eds-pca9532: mark pca9532_event() staticSven Wegener2009-01-08
| | | | | | | | | | | | Signed-off-by: Sven Wegener <sven.wegener@stealer.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * leds: ALIX.2 LEDs driverConstantin Baranov2009-01-08
| | | | | | | | | | | | | | Driver for PC Engines ALIX.2 and ALIX.3 LEDs. Signed-off-by: Constantin Baranov <const@mimas.ru> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
* | Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlightLinus Torvalds2009-01-09
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight: backlight: Rename the corgi backlight driver to generic backlight: add support for Toppoly TDO35S series to tdo24m lcd driver backlight: Add suspend/resume support to the backlight core bd->props.brightness doesn't reflect the actual backlight level. backlight: Support VGA/QVGA mode switching in tosa_lcd backlight: Catch invalid input in sysfs attributes backlight: Value of ILI9320_RGB_IF2 register should not be hardcoded backlight: crbllcd_bl - Use platform_device_register_simple() backlight: progear_bl - Use platform_device_register_simple() backlight: hp680_bl - Use platform_device_register_simple()
| * | backlight: Rename the corgi backlight driver to genericRichard Purdie2009-01-08
| | | | | | | | | | | | | | | | | | | | | The corgi backlight driver is really generic code. This rename makes this a lot clearer and completes the partial rename made a while ago. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: add support for Toppoly TDO35S series to tdo24m lcd driverMike Rapoport2009-01-08
| | | | | | | | | | | | | | | | | | Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: Add suspend/resume support to the backlight coreRichard Purdie2009-01-08
| | | | | | | | | | | | | | | | | | | | | Add suspend/resume support to the backlight core and enable use of it by appropriate drivers. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | bd->props.brightness doesn't reflect the actual backlight level.Zhang Rui2009-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Always invoke backlight_update_status when users want to change the backlight. For setups where brightness change is an expensive operation, this could be done in the driver rather than the core. http://bugzilla.kernel.org/show_bug.cgi?id=12249 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: Support VGA/QVGA mode switching in tosa_lcdDmitry Baryshkov2009-01-08
| | | | | | | | | | | | | | | | | | | | | | | | LCD driver on tosa requires reprogramming TG after mode switching. Add support for switching to QVGA mode. Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: Catch invalid input in sysfs attributesPavel Machek2009-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check input properly in backlight, echo > brightness should not turn off the backlight. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix printk warning] Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: Value of ILI9320_RGB_IF2 register should not be hardcodedDenis V. Lunev2009-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is stored in the board specific file ./arch/arm/mach-s3c2412/mach-jive.c as .rgb_if2. Actually, the value is correct, only semantic is wrong. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: crbllcd_bl - Use platform_device_register_simple()Akinobu Mita2009-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use platform_device_register_simple() and also fix error handling when platform_device_alloc() fails (cr_backlight_driver is left registered). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: progear_bl - Use platform_device_register_simple()Akinobu Mita2009-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use platform_device_register_simple() and also fix error handling when platform_device_alloc() fails (progearbl_driver is left registered). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
| * | backlight: hp680_bl - Use platform_device_register_simple()Akinobu Mita2009-01-08
| |/ | | | | | | | | | | | | | | | | Use platform_device_register_simple() and also fix error handling when platform_device_alloc() fails (hp680_bl_driver is left registered). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds2009-01-09
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (864 commits) Btrfs: explicitly mark the tree log root for writeback Btrfs: Drop the hardware crc32c asm code Btrfs: Add Documentation/filesystem/btrfs.txt, remove old COPYING Btrfs: kmap_atomic(KM_USER0) is safe for btrfs_readpage_end_io_hook Btrfs: Don't use kmap_atomic(..., KM_IRQ0) during checksum verifies Btrfs: tree logging checksum fixes Btrfs: don't change file extent's ram_bytes in btrfs_drop_extents Btrfs: Use btrfs_join_transaction to avoid deadlocks during snapshot creation Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code Btrfs: drop EXPORT symbols from extent_io.c Btrfs: Fix checkpatch.pl warnings Btrfs: Fix free block discard calls down to the block layer Btrfs: avoid orphan inode caused by log replay Btrfs: avoid potential super block corruption Btrfs: do not call kfree if kmalloc failed in btrfs_sysfs_add_super Btrfs: fix a memory leak in btrfs_get_sb Btrfs: Fix typo in clear_state_cb Btrfs: Fix memset length in btrfs_file_write Btrfs: update directory's size when creating subvol/snapshot Btrfs: add permission checks to the ioctls ...
| * | Btrfs: explicitly mark the tree log root for writebackChris Mason2009-01-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Each subvolume has an extent_state_tree used to mark metadata that needs to be sent to disk while syncing the tree. This is used in addition to the dirty bits on the pages themselves so that a single subvolume can be sent to disk efficiently in disk order. Normally this marking happens in btrfs_alloc_free_block, which also does special recording of dirty tree blocks for the tree log roots. Yan Zheng noticed that when the root of the log tree is allocated, it is added to the wrong writeback list. The fix used here is to explicitly set it dirty as part of tree log creation. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | Btrfs: Drop the hardware crc32c asm codeChris Mason2009-01-07
| | | | | | | | | | | | | | | | | | | | | | | | This is already in the arch specific directories in mainline and shouldn't be copied into btrfs. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | Btrfs: Add Documentation/filesystem/btrfs.txt, remove old COPYINGDavid Woodhouse2009-01-07
| | | | | | | | | | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | Btrfs: kmap_atomic(KM_USER0) is safe for btrfs_readpage_end_io_hookChris Mason2009-01-07
| | | | | | | | | | | | | | | | | | | | | None of the checksum verification code schedules, so we can use the faster kmap_atomic Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | Btrfs: Don't use kmap_atomic(..., KM_IRQ0) during checksum verifiesChris Mason2009-01-06
| | | | | | | | | | | | | | | | | | | | | Checksum verification happens in a helper thread, and there is no need to mess with interrupts. This switches to kmap() instead. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | Btrfs: tree logging checksum fixesYan Zheng2009-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains following things. 1) Limit the max size of btrfs_ordered_sum structure to PAGE_SIZE. This struct is kmalloced so we want to keep it reasonable. 2) Replace copy_extent_csums by btrfs_lookup_csums_range. This was duplicated code in tree-log.c 3) Remove replay_one_csum. csum items are replayed at the same time as replaying file extents. This guarantees we only replay useful csums. 4) nbytes accounting fix. Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
| * | Btrfs: don't change file extent's ram_bytes in btrfs_drop_extentsYan Zheng2009-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | btrfs_drop_extents doesn't change file extent's ram_bytes in the case of booked extent. To be consistent, we should also not change ram_bytes when truncating existing extent. Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
| * | Btrfs: Use btrfs_join_transaction to avoid deadlocks during snapshot creationYan Zheng2009-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Snapshot creation happens at a specific time during transaction commit. We need to make sure the code called by snapshot creation doesn't wait for the running transaction to commit. This changes btrfs_delete_inode and finish_pending_snaps to use btrfs_join_transaction instead of btrfs_start_transaction to avoid deadlocks. It would be better if btrfs_delete_inode didn't use the join, but the call path that triggers it is: btrfs_commit_transaction->create_pending_snapshots-> create_pending_snapshot->btrfs_lookup_dentry-> fixup_tree_root_location->btrfs_read_fs_root-> btrfs_read_fs_root_no_name->btrfs_orphan_cleanup->iput This will be fixed in a later patch by moving the orphan cleanup to the cleaner thread. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat codeChris Mason2009-01-06
| | | | | | | | | | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | Merge branch 'master' of ↵Chris Mason2009-01-06
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
| | * | Btrfs: drop EXPORT symbols from extent_io.cChris Mason2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | They should stay out until this is turned into generic code. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| | * | Btrfs: Fix checkpatch.pl warningsChris Mason2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | There were many, most are fixed now. struct-funcs.c generates some warnings but these are bogus. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| | * | Btrfs: Fix free block discard calls down to the block layerLiu Hui2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a patch to fix discard semantic to make Btrfs work with FTL and SSD. We can improve FTL's performance by telling it which sectors are freed by file system. But if we don't tell FTL the information of free sectors in proper time, the transaction mechanism of Btrfs will be destroyed and Btrfs could not roll back the previous transaction under the power loss condition. There are some problems in the old implementation: 1, In __free_extent(), the pinned down extents should not be discarded. 2, In free_extents(), the free extents are all pinned, so they need to be discarded in transaction committing time instead of free_extents(). 3, The reserved extent used by log tree should be discard too. This patch change discard behavior as follows: 1, For the extents which need to be free at once, we discard them in update_block_group(). 2, Delay discarding the pinned extent in btrfs_finish_extent_commit() when committing transaction. 3, Remove discarding from free_extents() and __free_extent() 4, Add discard interface into btrfs_free_reserved_extent() 5, Discard sectors before updating the free space cache, otherwise, FTL will destroy file system data.
| | * | Btrfs: avoid orphan inode caused by log replayYan Zheng2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drop_one_dir_item does not properly update inode's link count. It can be reproduced by executing following commands: #touch test #sync #rm -f test #dd if=/dev/zero bs=4k count=1 of=test conv=fsync #echo b > /proc/sysrq-trigger This fixes it by adding an BTRFS_ORPHAN_ITEM_KEY for the inode Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
| | * | Btrfs: avoid potential super block corruptionYan Zheng2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The data in fs_info->super_for_commit are zeros before the first transaction commit. If tree log sync and system crash both occur before the first transaction commit, super block will get corrupted. This fixes it by properly filling in the super_for_commit field at open time. Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
| | * | Btrfs: do not call kfree if kmalloc failed in btrfs_sysfs_add_superShen Feng2009-01-05
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
| | * | Btrfs: fix a memory leak in btrfs_get_sbShen Feng2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | subvol_name should be freed if error occurs. Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
| | * | Btrfs: Fix typo in clear_state_cbLiu Hui2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In clear_state_cb, we should check 'tree->ops->clear_bit_hook' instead of 'tree->ops->set_bit_hook'. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| | * | Btrfs: Fix memset length in btrfs_file_writeyanhai zhu2009-01-05
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
| | * | Btrfs: update directory's size when creating subvol/snapshotYan Zheng2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure directory's size properly updated when creating subvol/snapshot. Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
| | * | Btrfs: add permission checks to the ioctlsChris Mason2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only root can add/remove devices Only root can defrag subtrees Only files open for writing can be defragged Only files open for writing can be the destination for a clone Signed-off-by: Chris Mason <chris.mason@oracle.com>
| | * | Btrfs: Fix compile warning around num_online_cpus() in a min statementChris Mason2008-12-19
| | | | | | | | | | | | | | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
| | * | Btrfs: set EXTENT_BOUNDARY bit before marking extent delalloc.Yan Zheng2008-12-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a race in relocate_inode_pages, it happens when find_delalloc_range finds the delalloc extent before the boundary bit is set. Thank you, Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
| | * | Btrfs: properly update block accounting for metadataYan Zheng2008-12-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds the missing block accounting code to finish_current_insert and makes block accounting for root item properly protected by the delalloc spin lock. Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
| | * | Btrfs: Add missing mnt_drop_write in ioctl.cYan Zheng2008-12-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the missing mnt_drop_write to match mnt_want_write in btrfs_ioctl_defrag and btrfs_ioctl_clone Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
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