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2010-05-26Btrfs: fix preallocation and nodatacow checks in O_DIRECTChris Mason
The O_DIRECT code wasn't checking for multiple references on preallocated or nodatacow extents. This means it wasn't honoring snapshots properly. The fix here is to add an explicit check for multiple references This also fixes the math for selecting the correct disk block, making sure not to go past the end of the extent. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-05-26IB/qib: Use a single txselect module parameter for serdes tuningRalph Campbell
As part of the earlier patches submitted and reviewed, it was agreed to change the way serdes tuning parameters were specified to the driver. The updated patch got dropped by the linux-rdma email list so the earlier version of qib_iba7322.c ended up being used. This patch updates qib_iab7322.c to the simpler, single parameter method of setting the serdes parameters. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-26[S390] fill out file list in s390 MAINTAINERS entryJonathan Nieder
Noticed with scripts/get_maintainer.pl -f fs/partitions/ibm.c Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] Add support for LZO-compressed kernels.Heiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] cmm: get rid of CMM_PROC config optionHeiko Carstens
All distros have this option switched on, so lets get rid of at least one of the tons of config options that are available. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] cmm: remove superfluous EXPORT_SYMBOLs plus cleanupsHeiko Carstens
Remove superfluous EXPORT_SYMBOLS and do coding style cleanup while being at it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] dasd: unit check handling during internal cio I/OStefan Haberland
React on unit checks during cio internal I/O. Handle as unsolicited interrupt and advice cio to retry. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] cio: unit check handling during internal I/OMichael Ernst
Send unit checks that occur during internal I/O to the device driver and react according to its return code. Signed-off-by: Michael Ernst <mernst@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] ccwgroup: add locking around drvdata accessSebastian Ott
Several processes may concurrently try to create a group device from the same ccw_device(s). Add locking arround the drvdata access to prevent race conditions. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] cio: remove stschSebastian Ott
Since 8821d24cd261aede9b0436cd3252b17a60ccc33a we no longer use the plain stsch inline function but the one which can handle exceptions. Remove the unused function. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] spp: remove KVM_AWARE_CMF config optionHeiko Carstens
This config option enables or disables three single instructions which aren't expensive. This is too fine grained. Besided that everybody who uses kvm would enable it anyway in order to debug performance problems. Just remove it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] kprobes: forbid probing of stnsm/stosm/epswHeiko Carstens
The probed instructions will be executed in a single stepped and irq disabled context. Therefore the results of stnsm, stosm and epsw would be wrong if probed. So let's just disallow probing of these functions. If really needed a fixup could be written for each of them, but I doubt it's worth it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] spp: fix compilation for CONFIG_32BITHeiko Carstens
Fix build breakage for CONFIG_32BIT caused by cd3b70f5 "[S390] virtualization aware cpu measurement" Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] atomic: implement atomic64_dec_if_positiveHeiko Carstens
Implement atomic64_dec_if_positive and add missing system.h header include. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26[S390] cmm: fix crash on module unloadHeiko Carstens
There might be a scheduled cmm_timer if the cmm module gets unloaded. That timer was not deleted during module unload and thus could lead to system crash later on. Besides that reorder function calls in module init and exit code to avoid a couple of other races which could lead to accesses to uninitialized data. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-05-26IB/qib: Don't rely on (undefined) order of function parameter evaluationRoland Dreier
Some of the qib sysfs code passes a buffer pointer into simple_read_from_buffer() but relies on a function call in another parameter of the same call to initialize that pointer. Since the order of evaluation of function parameters is undefined, this will break if gcc chooses the wrong order. Fix this by splitting the code into two separate function calls. This was noticed because of warnings like the following on ppc: drivers/infiniband/hw/qib/qib_fs.c: In function 'portcntrs_2_read': drivers/infiniband/hw/qib/qib_fs.c:203: warning: 'counters' is used uninitialized in this function Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-26Merge branch 'drm-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: agp: amd64, fix pci reference leaks drm/edid: Allow non-fatal checksum errors in CEA blocks drm/radeon/kms: suppress a build warning (unused variable) drm: Fixes linux-next & linux-2.6 checkstack warnings: nouveau: fix acpi_lid_open undefined drm/radeon/kms: release AGP bridge at suspend
2010-05-26ar9170usb: fix read from freed driver contextChristian Lamparter
Commit "ar9170: wait for asynchronous firmware loading" introduced a bug, which is triggered by fatal errors while the driver is initializing the device. BUG: unable to handle kernel paging request at 6b6b6bf7 IP: [<c117b567>] kobject_put+0x7/0x70 *pde = 00000000 Oops: 0000 [#1] PREEMPT last sysfs file: /sys/devices/platform/hdaps/position Modules linked in: ar9170usb [...] Pid: 6246, comm: firmware/ar9170 Not tainted 2.6.34-wl #54 EIP: 0060:[<c117b567>] EFLAGS: 00010206 CPU: 0 EIP is at kobject_put+0x7/0x70 EAX: 6b6b6bd7 EBX: f4d3d0e0 ECX: f5ba9124 EDX: f6af2a7c ESI: 00000000 EDI: f4d3d0e0 EBP: 00000000 ESP: f5e98f9c DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Process firmware/ar9170 (pid: 6246) Stack: c12532ed 00000246 f5bfaa70 f8487353 f4d3d0e0 Call Trace: [<c12532ed>] ? device_release_driver+0x1d/0x30 [<f8487353>] ? ar9170_usb_firmware_failed+0x43/0x70 [ar9170usb] [<c125983c>] ? request_firmware_work_func+0x2c/0x70 [<c1259810>] ? request_firmware_work_func+0x0/0x70 [<c10413f4>] ? kthread+0x74/0x80 [<c1041380>] ? kthread+0x0/0x80 [<c1003136>] ? kernel_thread_helper+0x6/0x10 Code: 40 d3 f2 ff 85 c0 89 c3 74 0a ba 44 86 4c c1 e8 [...] EIP: [<c117b567>] kobject_put+0x7/0x70 SS:ESP 0068:f5e98f9c CR2: 000000006b6b6bf7 ---[ end trace e81abb992434b410 ]--- Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-05-26Revert "rt2x00: Fix rt2800usb TX descriptor writing."John W. Linville
This reverts commit 663cb47cc2c5acd32850f67d051e47d62ed199c9. This patch was merged out of the proper order, so instead of fixing a problem with a prior (unmerged) patch, it creates one. Ooops! Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-05-26x86, pat: Fix memory leak in free_memtypeXiaotian Feng
Reserve_memtype will allocate memory for new memtype, but in free_memtype, after the memtype erased from rbtree, the memory is not freed. Changes since V1: make rbt_memtype_erase return erased memtype so that it can be freed in free_memtype. [ hpa: not for -stable: 2.6.34 and earlier not affected ] Signed-off-by: Xiaotian Feng <dfeng@redhat.com> LKML-Reference: <1274838670-8731-1-git-send-email-dfeng@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Jack Steiner <steiner@sgi.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2010-05-26m68k: amiga - RTC platform device conversionGeert Uytterhoeven
The A2000 TOD is an Oki MSM6242B, while the A3000 TOD is a Ricoh RP5C01. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - Parallel port platform device conversionGeert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - Serial port platform device conversionGeert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - Mouse platform device conversionGeert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - Keyboard platform device conversionGeert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - Amiga Gayle IDE platform device conversionGeert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - A4000T SCSI platform device conversionGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: a3000 - Do not use legacy Scsi_Host.baseGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - A3000 SCSI platform device conversionGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: gvp11 - Do not use legacy Scsi_Host.baseGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - GVP Series II SCSI zorro_driver conversionGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: a2091 - Do not use legacy Scsi_Host.baseGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: amiga - A2091/A590 SCSI zorro_driver conversionGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: mvme147 - Kill obsolete HOSTS_C logicGeert Uytterhoeven
Kill the obsolete HOSTS_C define and the related double inclusion of mvme147.h Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: a3000 - Kill a3000_scsiregs typedefGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: gvp11 - Kill gvp11_scsiregs typedefGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: a2091 - Kill a2091_scsiregs typedefGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: gvp11 - Extract check_wd33c93()Geert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: a3000 - Kill static global a3000_hostGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: mvme147 - Kill static global mvme147_hostGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: a3000 - Kill ugly DMA() macroGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k/scsi: gvp11 - Kill ugly DMA() macroGeert Uytterhoeven
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: set ARCH_KMALLOC_MINALIGNFUJITA Tomonori
Architectures that handle DMA-non-coherent memory need to set ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe: the buffer doesn't share a cache with the others. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26m68k: Enable atomic64_tGeert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26do_generic_file_read: clear page errors when issuing a fresh read of the pageJeff Moyer
I/O errors can happen due to temporary failures, like multipath errors or losing network contact with the iSCSI server. Because of that, the VM will retry readpage on the page. However, do_generic_file_read does not clear PG_error. This causes the system to be unable to actually use the data in the page cache page, even if the subsequent readpage completes successfully! The function filemap_fault has had a ClearPageError before readpage forever. This patch simply adds the same to do_generic_file_read. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Rik van Riel <riel@redhat.com> Acked-by: Larry Woodman <lwoodman@redhat.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-26gta02: Use pcf50633 backlight driver instead of platform backlight driver.Lars-Peter Clausen
Use the pcf50633 backlight driver instead of the platform backlight driver. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
2010-05-26backlight: pcf50633: Register a pcf50633-backlight device in pcf50633 core ↵Lars-Peter Clausen
driver. Register a device newly added pcf50633-backlight driver as a child device in the pcf50633 core driver. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
2010-05-26backlight: Add pcf50633 backlight driverLars-Peter Clausen
This patch adds a backlight driver for controlling the pcf50633 LED module. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
2010-05-26backlight: 88pm860x_bl: fix error handling in pm860x_backlight_probeAxel Lin
This patch properly unregisters a previously registered backlight device object in error handling Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
2010-05-26backlight: max8925_bl: Fix error handling pathAxel Lin
Properly unregister a previously registered backlight device object in error handling of max8925_backlight_probe. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>