- 17 Sep, 2008 8 commits
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Inaky Perez-Gonzalez authored
Documentation (and example utilities) for the UWB (and WUSB) stacks. Some of the documentation may be out-of-date. Signed-off-by: David Vrabel <david.vrabel@csr.com>
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David Vrabel authored
bitmap_copy_le() copies a bitmap, putting the bits into little-endian order (i.e., each unsigned long word in the bitmap is put into little-endian order). The UWB stack used bitmaps to manage Medium Access Slot availability, and these bitmaps need to be written to the hardware in LE order. Signed-off-by: David Vrabel <david.vrabel@csr.com>
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Arjan van de Ven authored
this patch turns the netdev timeout WARN_ON_ONCE() into a WARN_ONCE(), so that the device and driver names are inside the warning message. This helps automated tools like kerneloops.org to collect the data and do statistics, as well as making it more likely that humans cut-n-paste the important message as part of a bugreport. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: fixed uninitialized counter in struct kmem_cache_node
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] VR41xx: unsigned irq cannot be negative
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David Miller authored
This fill fix the following regression list entry: Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11276 Subject : build error: CONFIG_OPTIMIZE_INLINING=y causes gcc 4.2 to do stupid things Submitter : Randy Dunlap <randy.dunlap@oracle.com> Date : 2008-08-06 17:18 (38 days old) References : http://marc.info/?l=linux-kernel&m=121804329014332&w=4 http://lkml.org/lkml/2008/7/22/353 Handled-By : Bjorn Helgaas <bjorn.helgaas@hp.com> Patch : http://lkml.org/lkml/2008/7/22/364 with what I believe is a better fix than the one referenced in the regression entry above. These PNP header interfaces try to work in such a way that you can reference some of them even if PNP is not enabled, and the compiler was expected to optimize everything away. Which is mostly fine, except that there was one interface for which there was not provided an inline "NOP" implementation. Once we add that, all of these compile failures cannot handle any more. pnp: Provide NOP inline implementation of pnp_get_resource() when !PNP Fixes kernel bugzilla #11276. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Stephen Hemminger authored
This fixes kernel regression for 2.6.27-rc in http://bugzilla.kernel.org/show_bug.cgi?id=11547 The change to split 8390 into old isa and non-isa versions overlooked this driver. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
This reverts commit bc19d6e0, which as Larry Finger reports causes the radio LED on his system to no longer respond to rfkill switch events. Reported-by: Larry Finger <Larry.Finger@lwfinger.net> Requested-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 16 Sep, 2008 1 commit
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roel kluin authored
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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- 15 Sep, 2008 2 commits
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Salman Qazi authored
Initialized total objects atomic for the node in init_kmem_cache_node. The uninitialized value was ruining the stats in /proc/slabinfo. Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Salman Qazi <sqazi@google.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: talitos - Avoid consecutive packets going out with same IV
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- 14 Sep, 2008 1 commit
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Kim Phillips authored
The SEC's h/w IV out implementation DMAs the trailing encrypted payload block of the last encryption to ctx->iv. Since the last encryption may still be pending completion, we can sufficiently prevent successive packets from being transmitted with the same IV by xoring with sequence number. Also initialize alg_list earlier to prevent oopsing on a failed probe. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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- 13 Sep, 2008 28 commits
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Uwe Kleine-König authored
There are a few commits that misencoded my name (or used "oe" instead of "ö"). So add a correct version to .mailmap. Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] Fix PCI_DMA_BUS_IS_PHYS for ARM [ARM] 5247/1: tosa: SW_EAR_IN support [ARM] 5246/1: tosa: add proper clock alias for tc6393xb clock [ARM] 5245/1: Fix warning about unused return value in drivers/pcmcia [ARM] OMAP: Fix MMC device data imx serial: fix rts handling for non imx1 based hardware imx serial: set RXD mux bit on i.MX27 and i.MX31 i.MX serial: fix init failure pcm037: add rts/cts support for serial port
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-devLinus Torvalds authored
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] LBA28/LBA48 off-by-one bug in ata.h sata_inic162x: enable LED blinking ata: duplicate variable sparse warning
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: re-add debug prints for unmodified BARs PCI: fix pciehp_free_irq() PCI Hotplug: fakephp: fix deadlock... again PCI: Fix printk warnings in setup-bus.c PCI: Fix printk warnings in probe.c PCI/iommu: blacklist DMAR on Intel G31/G33 chipsets
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: niu: panic on reset netlink: fix overrun in attribute iteration [Bluetooth] Fix regression from using default link policy ath9k: Assign seq# when mac80211 requests this
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Fix user_regset 'n' field values. sparc64: Fix PCI error interrupt registry on PSYCHO. sparc32: Fix function signature of of_bus_sbus_get_flags(). sparc64: Fix interrupt register calculations on Psycho and Sabre.
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Alex Dubov authored
- 8-bit interface mode never worked properly. The only adapter I have which supports the 8b mode (the Jmicron) had some problems with its clock wiring and they discovered it only now. We also discovered that ProHG media is more sensitive to the ordering of initialization commands. - Make the driver fall back to highest supported mode instead of always falling back to serial. The driver will attempt the switch to 8b mode for any new MSPro card, but not all of them support it. Previously, these new cards ended up in serial mode, which is not the best idea (they work fine with 4b, after all). - Edit some macros for better conformance to Sony documentation Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andrew Morton authored
Herton Krzesinski reports that the error-checking changes in 04ebd4ae ("block/ioctl.c and fs/partition/check.c: check value returned by add_partition") cause his buggy USB camera to no longer mount. "The camera is an Olympus X-840. The original issue comes from the camera itself: its format program creates a partition with an off by one error". Buggy devices happen. It is better for the kernel to warn and to proceed with the mount. Reported-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Cc: Abdel Benamrouche <draconux@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Alan Stern <stern@rowland.harvard.edu> 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>
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Ben Dooks authored
Fix the section mismatch warning generated by the incorrect naming of s3c24xx_spidrv which should be s3c24xx_spi_driver: WARNING: drivers/spi/spi_s3c24xx.o(.data+0x4): Section mismatch in reference from the variable s3c24xx_spidrv to the (unknown reference) .exit.text:(unknown) Signed-off-by: Ben Dooks <ben-linux@fluff.org> 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>
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Haavard Skinnemoen authored
When suspending the system with atmel_lcdfb enabled, I sometimes see this: atmel_lcdfb atmel_lcdfb.0: FIFO underflow 0x10 Which can be explained by the fact that we're not stopping the LCD controller and its DMA engine when suspending, we're just gating the clocks to them. There's another potential issue which may be harder to trigger but much more nasty: If we gate the clocks at _just_ the right moment, e.g. when the DMA engine is doing a bus transaction, we may cause the DMA engine to violate the system bus protocol and cause a lockup. Avoid these issues by shutting down the LCD controller before entering suspend (and restarting it when resuming). This prevents the underrun from happening in the first place, and prevents whatever nastiness is happening when the bus clock stops in the middle of a DMA transfer. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Robin Holt authored
If you are on ia64 and you modprobe xpc then modprobe -r xpc, you immediately get a panic. xpc depends on xp which depends on gru for a symbol. That symbol is only used when we are running on UV hardware. Currently, the GRU driver detects we are not on UV hardware and does no initializing. It does not do the same check when unloading. As a result, the gru driver attempts to tear down stuff that was not setup. This is a simple two-line workaround to get us through this release. Once 2.6.28 is opened, we need to rework the symbols that xp is depending on from gru so the gru driver can properly fail to load when hardware is not available. Signed-off-by: Robin Holt <holt@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ming Lei authored
It should be linux-uvc-devel@lists.berlios.de. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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David Brownell authored
Provide summary ABI docs about the /sys/class/gpio files. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mel Gorman authored
The iterator for_each_zone_zonelist() uses a struct zoneref *z cursor when scanning zonelists to keep track of where in the zonelist it is. The zoneref that is returned corresponds to the the next zone that is to be scanned, not the current one. It was intended to be treated as an opaque list. When the page allocator is scanning a zonelist, it marks elements in the zonelist corresponding to zones that are temporarily full. As the zonelist is being updated, it uses the cursor here; if (NUMA_BUILD) zlc_mark_zone_full(zonelist, z); This is intended to prevent rescanning in the near future but the zoneref cursor does not correspond to the zone that has been found to be full. This is an easy misunderstanding to make so this patch corrects the problem by changing zoneref cursor to be the current zone being scanned instead of the next one. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Andy Whitcroft <apw@shadowen.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: <stable@kernel.org> [2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ned Forrester authored
Fixes two DMA bugs in the pxa2xx_spi driver. The first bug is in all versions of this driver; the second was introduced in the 2.6.20 kernel, and prevents using the driver with chips like m25p16 flash (which can issue large DMA reads). 1. Zero length transfers are permitted for use to insert timing, but pxa2xx_spi.c will fail if this is requested in DMA mode. Fixed by using programmed I/O (PIO) mode for such transfers. 2. Transfers larger than 8191 are not permitted in DMA mode. A test for length rejects all large transfers regardless of DMA or PIO mode. Worked around by rejecting only large transfers with DMA mapped buffers, and forcing all other transfers larger than 8191 to use PIO mode. A rate limited warning is issued for DMA transfers forced to PIO mode. This patch should apply to all kernels back to and including 2.6.20; it was test patched against 2.6.20. An additional patch would be required for older kernels, but those versions are very buggy anyway. Signed-off-by: Ned Forrester <nforrester@whoi.edu> Cc: Vernon Sauder <vernoninhand@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ned Forrester authored
Fixes several chipselect bugs in the pxa2xx_spi driver. These bugs are in all versions of this driver and prevent using it with chips like m25p16 flash. 1. The spi_transfer.cs_change flag is handled too early: before spi_transfer.delay_usecs applies, thus making the delay ineffective at holding chip select. 2. spi_transfer.delay_usecs is ignored on the last transfer of a message (likewise not holding chipselect long enough). 3. If spi_transfer.cs_change is set on the last transfer, the chip select is always disabled, instead of the intended meaning: optionally holding chip select enabled for the next message. Those first three bugs were fixed with a relocation of delays and chip select de-assertions. 4. If a message has the cs_change flag set on the last transfer, and had the chip select stayed enabled as requested (see 3, above), it would not have been disabled if the next message is for a different chip. Fixed by dropping chip select regardless of cs_change at end of a message, if there is no next message or if the next message is for a different chip. This patch should apply to all kernels back to and including 2.6.20; it was test patched against 2.6.20. An additional patch would be required for older kernels, but those versions are very buggy anyway. Signed-off-by: Ned Forrester <nforrester@whoi.edu> Cc: Vernon Sauder <vernoninhand@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Peter Korsgaard authored
Error out on transfer length != multiple of bytes per word with -EINVAL. Fixes a buffer overrun crash if length < bytes per word. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> 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>
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Peter Korsgaard authored
Commit a61f5345 (spi_mpc83xx clockrate fixes) broke clockrate calculation for low speeds. SPMODE_DIV16 should be set if the divider is higher than 64, not only if the divider gets clipped to 1024. Furthermore, the clipping check was off by a factor 16 as well. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> 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>
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Hugh Dickins authored
A "Quicklists: 0 kB" line has just started appearing in /proc/meminfo, but most architectures (including x86) don't have them configured, so #ifdef it, like the highmem lines. And those architectures which do have quicklists configured are using them for page tables: so let's place it next to PageTables. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Eric Sesterhenn authored
This fixes: ============================================= [ INFO: possible recursive locking detected ] 2.6.27-rc5-00283-g70bb0896 #68 --------------------------------------------- touch/6855 is trying to acquire lock: (&info->bfs_lock){--..}, at: [<c02262f5>] bfs_delete_inode+0x9e/0x18c but task is already holding lock: (&info->bfs_lock){--..}, at: [<c0226c00>] bfs_create+0x45/0x187 other info that might help us debug this: 2 locks held by touch/6855: #0: (&type->i_mutex_dir_key#5){--..}, at: [<c018ad13>] do_filp_open+0x10b/0x62f #1: (&info->bfs_lock){--..}, at: [<c0226c00>] bfs_create+0x45/0x187 stack backtrace: Pid: 6855, comm: touch Not tainted 2.6.27-rc5-00283-g70bb0896 #68 [<c013e769>] validate_chain+0x458/0x9f4 [<c013bece>] ? trace_hardirqs_off+0xb/0xd [<c013f36b>] __lock_acquire+0x666/0x6e0 [<c013f440>] lock_acquire+0x5b/0x77 [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c [<c06aab74>] mutex_lock_nested+0xbc/0x234 [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c [<c02262f5>] bfs_delete_inode+0x9e/0x18c [<c0226257>] ? bfs_delete_inode+0x0/0x18c [<c01925e1>] generic_delete_inode+0x94/0xfe [<c019265d>] generic_drop_inode+0x12/0x12f [<c0191b7e>] iput+0x4b/0x4e [<c0226d1e>] bfs_create+0x163/0x187 [<c0188b42>] vfs_create+0xa6/0x114 [<c018adb5>] do_filp_open+0x1ad/0x62f [<c0107cdc>] ? native_sched_clock+0x82/0x96 [<c06ac309>] ? _spin_unlock+0x27/0x3c [<c019379e>] ? alloc_fd+0xbf/0xc9 [<c06ae2f4>] ? sub_preempt_count+0x9d/0xab [<c019379e>] ? alloc_fd+0xbf/0xc9 [<c0180391>] do_sys_open+0x42/0xb8 [<c041d564>] ? trace_hardirqs_on_thunk+0xc/0x10 [<c0180449>] sys_open+0x1e/0x26 [<c01038bd>] sysenter_do_call+0x12/0x31 ======================= The problem is that we don't unlock the bfs->lock mutex before calling iput (we do in the other cases). Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hidehiro Kawai authored
There is no description of bit 4 of coredump_filter in the documentation. This patch adds it. Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Roland McGrath <roland@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Li Zefan authored
If all the cpus in a cpuset are offlined, the tasks in it will be moved to the nearest ancestor with non-empty cpus. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Jackson <pj@sgi.com> Cc: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Li Zefan authored
After the patch: commit 0b2f630a Author: Miao Xie <miaox@cn.fujitsu.com> Date: Fri Jul 25 01:47:21 2008 -0700 cpusets: restructure the function update_cpumask() and update_nodemask() It might happen that 'echo 0 > /cpuset/sub/cpus' returned failure but 'cpus' has been changed, because cpus was changed before calling heap_init() which may return -ENOMEM. This patch restores the orginal behavior. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> Cc: Paul Jackson <pj@sgi.com> Cc: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hiroshi DOYU authored
akpm: these have no callers at this time, but they shall soon, so let's get them right. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Cc: Tony Lindgren <tony@atomide.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alexey Dobriyan authored
Print parent directory name as well. The aim is to catch non-creation of parent directory when proc_mkdir will return NULL and all subsequent registrations go directly in /proc instead of intended directory. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Fixed insane printk string while at it. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Taisuke Yamada authored
I recently bought 3 HGST P7K500-series 500GB SATA drives and had trouble accessing the block right on the LBA28-LBA48 border. Here's how it fails (same for all 3 drives): # dd if=/dev/sdc bs=512 count=1 skip=268435455 > /dev/null dd: reading `/dev/sdc': Input/output error 0+0 records in 0+0 records out 0 bytes (0 B) copied, 0.288033 seconds, 0.0 kB/s # dmesg ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata1.00: BMDMA stat 0x25 ata1.00: cmd c8/00:08:f8:ff:ff/00:00:00:00:00/ef tag 0 dma 4096 in res 51/04:08:f8:ff:ff/00:00:00:00:00/ef Emask 0x1 (device error) ata1.00: status: { DRDY ERR } ata1.00: error: { ABRT } ata1.00: configured for UDMA/33 ata1: EH complete ... After some investigations, it turned out this seems to be caused by misinterpretation of the ATA specification on LBA28 access. Following part is the code in question: === include/linux/ata.h === static inline int lba_28_ok(u64 block, u32 n_block) { /* check the ending block number */ return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); } HGST drive (sometimes) fails with LBA28 access of {block = 0xfffffff, n_block = 1}, and this behavior seems to be comformant. Other drives, including other HGST drives are not that strict, through. >From the ATA specification: (http://www.t13.org/Documents/UploadedDocuments/project/d1410r3b-ATA-ATAPI-6.pdf) 8.15.29 Word (61:60): Total number of user addressable sectors This field contains a value that is one greater than the total number of user addressable sectors (see 6.2). The maximum value that shall be placed in this field is 0FFFFFFFh. So the driver shouldn't use the value of 0xfffffff for LBA28 request as this exceeds maximum user addressable sector. The logical maximum value for LBA28 is 0xffffffe. The obvious fix is to cut "- 1" part, and the patch attached just do that. I've been using the patched kernel for about a month now, and the same fix is also floating on the net for some time. So I believe this fix works reliably. Just FYI, many Windows/Intel platform users also seems to be struck by this, and HGST has issued a note pointing to Intel ICH8/9 driver. "28-bit LBA command is being used to access LBAs 29-bits in length" http://www.hitachigst.com/hddt/knowtree.nsf/cffe836ed7c12018862565b000530c74/b531b8bce8745fb78825740f00580e23 Also, *BSDs seems to have similar fix included sometime around ~2004, through I have not checked out exact portion of the code. Signed-off-by: Taisuke Yamada <tai@rakugaki.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Bob Stewart authored
Enable LED blinking. Signed-off-by: Bob Stewart <bob@evoria.net> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Stephen Hemminger authored
drivers/ata/ata_piix.c:1502:7: warning: symbol 'rc' shadows an earlier one Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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