- 02 Dec, 2008 18 commits
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Manfred Spraul authored
2nd part of the fixes needed for http://bugzilla.kernel.org/show_bug.cgi?id=11796. When the idr tree is either grown or shrunk, then the update to the number of layers and the top pointer were not atomic. This race caused crashes. The attached patch fixes that by replicating the layers counter in each layer, thus idr_find doesn't need idp->layers anymore. Signed-off-by:
Manfred Spraul <manfred@colorfullife.com> Cc: Clement Calmels <cboulte@gmail.com> Cc: Nadia Derbey <Nadia.Derbey@bull.net> Cc: Pierre Peiffer <peifferp@gmail.com> Cc: <stable@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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FUJITA Tomonori authored
- pci_map_sg/dma_map_sg are used with a scatter gather list that doesn't come from the block layer (e.g. some network drivers do). - how IOMMUs merge adjacent elements of the scatter/gather list is independent of how the block layer determines sees elements. Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Tejun Heo <htejun@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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David Howells authored
Fix the error handling in sys_mmap2(). Currently, if the pgoff check fails, fput() might have to be called (which it isn't), so do the pgoff check first, before fget() is called. Signed-off-by:
David Howells <dhowells@redhat.com> Reported-by:
Julia Lawall <julia@diku.dk> Signed-off-by:
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Arjan van de Ven authored
The description for 'D' was missing in the comment... (causing me a minute of WTF followed by looking at more of the code) Signed-off-by:
Arjan van de Ven <arjan@linux.intel.com> Signed-off-by:
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Benjamin Herrenschmidt authored
The engine on some radeon variants locks up if color expansion is called for non aligned source data. This patch enables a feature of the core fbdev to request aligned input pixmaps and uses the HW clipping engine to clip the output to the requested size Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11875Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by:
James Cloos <cloos@jhcloos.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: "David S. Miller" <davem@davemloft.net> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by:
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Ben Dooks authored
The spi master driver must have num_chipselect set to allow the bus to initialise. Pass this through the platform data. Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Ben Dooks authored
The spidev_to_sg() call in spi_s3c24xx_gpio.c was using the wrong method to convert the spi device into the private data for the driver. Fix this by using spi_master_get_devdata. Signed-off-by:
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Jan Nikitenko authored
Fix unsafe order in dma mapping operation: always flush data from the cache *BEFORE* invalidating it, to allow full duplex transfers where the same buffer may be used for both writes and reads. Tested with mmc-spi. Signed-off-by:
Jan Nikitenko <jan.nikitenko@gmail.com> Signed-off-by:
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Julien Boibessot authored
Corrects spi_imx driver oops during initialization/probing: can't use drv_data before it's allocated. Signed-off-by:
Julien Boibessot <julien.boibessot@armadeus.com> Acked-by:
Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
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Davide Libenzi authored
It has been thought that the per-user file descriptors limit would also limit the resources that a normal user can request via the epoll interface. Vegard Nossum reported a very simple program (a modified version attached) that can make a normal user to request a pretty large amount of kernel memory, well within the its maximum number of fds. To solve such problem, default limits are now imposed, and /proc based configuration has been introduced. A new directory has been created, named /proc/sys/fs/epoll/ and inside there, there are two configuration points: max_user_instances = Maximum number of devices - per user max_user_watches = Maximum number of "watched" fds - per user The current default for "max_user_watches" limits the memory used by epoll to store "watches", to 1/32 of the amount of the low RAM. As example, a 256MB 32bit machine, will have "max_user_watches" set to roughly 90000. That should be enough to not break existing heavy epoll users. The default value for "max_user_instances" is set to 128, that should be enough too. This also changes the userspace, because a new error code can now come out from EPOLL_CTL_ADD (-ENOSPC). The EMFILE from epoll_create() was already listed, so that should be ok. [akpm@linux-foundation.org: use get_current_user()] Signed-off-by:
Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: <stable@kernel.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Reported-by:
Vegard Nossum <vegardno@ifi.uio.no> Signed-off-by:
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Stefano Babic authored
According to the manual the "tdfOnExit" flag must be set on the last byte we want to send. The PSC controller holds SS low until the flag is set. However, the flag was set always on the last byte of the FIFO, independently if it is the last byte of the transfer. This generates spurious toggling of the SS signals that breaks the protocol of some peripherals. Fix. Signed-off-by:
Stefano Babic <sbabic@denx.de> Acked-by:
Grant Likely <grant.likely@secretlab.ca> Signed-off-by:
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Wolfgang Ocker authored
I saw a kernel oops in spidev_remove() when a spidev device was registered and I unloaded the SPI master driver: Unable to handle kernel paging request for data at address 0x00000004 Faulting instruction address: 0xc01c0c50 Oops: Kernel access of bad area, sig: 11 [#1] CDSPR Modules linked in: spi_ppc4xx(-) NIP: c01c0c50 LR: c01bf9e4 CTR: c01c0c34 REGS: cec89c30 TRAP: 0300 Not tainted (2.6.27.3izt) MSR: 00021000 <ME> CR: 24000228 XER: 20000007 DEAR: 00000004, ESR: 00800000 TASK = cf889040[2070] 'rmmod' THREAD: cec88000 GPR00: 00000000 cec89ce0 cf889040 cec8e000 00000004 cec8e000 ffffffff 00000000 GPR08: 0000001c c0336380 00000000 c01c0c34 00000001 1001a338 100e0000 100df49c GPR16: 100b54c0 100df49c 100ddd20 100f05a8 100b5340 100efd68 00000000 00000000 GPR24: 100ec008 100f0428 c0327788 c0327794 cec8e0ac cec8e000 c0336380 00000000 NIP [c01c0c50] spidev_remove+0x1c/0xe4 LR [c01bf9e4] spi_drv_remove+0x2c/0x3c Call Trace: [cec89d00] [c01bf9e4] spi_drv_remove+0x2c/0x3c [cec89d10] [c01859a0] __device_release_driver+0x78/0xb4 [cec89d20] [c0185ab0] device_release_driver+0x28/0x44 [cec89d40] [c0184be8] bus_remove_device+0xac/0xd8 [cec89d60] [c0183094] device_del+0x100/0x194 [cec89d80] [c0183140] device_unregister+0x18/0x30 [cec89da0] [c01bf30c] __unregister+0x20/0x34 [cec89db0] [c0182778] device_for_each_child+0x38/0x74 [cec89de0] [c01bf2d0] spi_unregister_master+0x28/0x44 [cec89e00] [c01bfeac] spi_bitbang_stop+0x1c/0x58 [cec89e20] [d908a5e0] spi_ppc4xx_of_remove+0x24/0x7c [spi_ppc4xx] [...] IMHO a call to spi_set_drvdata() is missing in spidev_probe(). The patch below helped. Signed-off-by:
Wolfgang Ocker <weo@reccoware.de> Signed-off-by:
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roel kluin authored
Use __initdata for data, not __init. Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Signed-off-by:
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Henrik Rydberg authored
make use of the new dmi device loading support to automatically load the applesmc driver based on the dmi_match table. Signed-off-by:
Henrik Rydberg <rydberg@euromail.se> Cc: Nicolas Boichat <nicolas@boichat.ch> Signed-off-by:
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Takashi Iwai authored
The netmos_9xx5_combo type assumes that PCI SSID provides always the correct value for the number of parallel and serial ports, but there are indeed broken devices with wrong numbers, which may result in Oops. This patch simply adds the check of the array range. Reference: Novell bnc#447067 https://bugzilla.novell.com/show_bug.cgi?id=447067Signed-off-by:
Takashi Iwai <tiwai@suse.de> Cc: <stable@kernel.org> Signed-off-by:
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KAMEZAWA Hiroyuki authored
Fixes for memcg/memory hotplug. While memory hotplug allocate/free memmap, page_cgroup doesn't free page_cgroup at OFFLINE when page_cgroup is allocated via bootomem. (Because freeing bootmem requires special care.) Then, if page_cgroup is allocated by bootmem and memmap is freed/allocated by memory hotplug, page_cgroup->page == page is no longer true. But current MEM_ONLINE handler doesn't check it and update page_cgroup->page if it's not necessary to allocate page_cgroup. (This was not found because memmap is not freed if SPARSEMEM_VMEMMAP is y.) And I noticed that MEM_ONLINE can be called against "part of section". So, freeing page_cgroup at CANCEL_ONLINE will cause trouble. (freeing used page_cgroup) Don't rollback at CANCEL. One more, current memory hotplug notifier is stopped by slub because it sets NOTIFY_STOP_MASK to return vaule. So, page_cgroup's callback never be called. (low priority than slub now.) I think this slub's behavior is not intentional(BUG). and fixes it. Another way to be considered about page_cgroup allocation: - free page_cgroup at OFFLINE even if it's from bootmem and remove specieal handler. But it requires more changes. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=12041Signed-off-by:KAMEZAWA Hiruyoki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Pavel Emelyanov <xemul@openvz.org> Tested-by:
Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by:
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Nick Piggin authored
Jim Radford has reported that the vmap subsystem rewrite was sometimes causing his VIVT ARM system to behave strangely (seemed like going into infinite loops trying to fault in pages to userspace). We determined that the problem was most likely due to a cache aliasing issue. flush_cache_vunmap was only being called at the moment the page tables were to be taken down, however with lazy unmapping, this can happen after the page has subsequently been freed and allocated for something else. The dangling alias may still have dirty data attached to it. The fix for this problem is to do the cache flushing when the caller has called vunmap -- it would be a bug for them to write anything else to the mapping at that point. That appeared to solve Jim's problems. Reported-by:
Jim Radford <radford@blackbean.org> Signed-off-by:
Nick Piggin <npiggin@suse.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2Linus Torvalds authored
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: ocfs2: fix regression in ocfs2_read_blocks_sync() ocfs2: fix return value set in init_dlmfs_fs() ocfs2: Small documentation update ocfs2: fix wake_up in unlock_ast ocfs2: initialize stack_user lvbptr ocfs2: comments typo fix
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- 01 Dec, 2008 22 commits
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Mark Fasheh authored
We're panicing in ocfs2_read_blocks_sync() if a jbd-managed buffer is seen. At first glance, this seems ok but in reality it can happen. My test case was to just run 'exorcist'. A struct inode is being pushed out of memory but is then re-read at a later time, before the buffer has been checkpointed by jbd. This causes a BUG to be hit in ocfs2_read_blocks_sync(). Reviewed-by:
Joel Becker <joel.becker@oracle.com> Signed-off-by:
Mark Fasheh <mfasheh@suse.com>
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Coly Li authored
In init_dlmfs_fs(), if calling kmem_cache_create() failed, the code will use return value from calling bdi_init(). The correct behavior should be set status as -ENOMEM before going to "bail:". Signed-off-by:
Coly Li <coyli@suse.de> Acked-by:
Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by:
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Mark Fasheh authored
Remove some features from the "not-supported" list that are actually supported now. Signed-off-by: -
David Teigland authored
In ocfs2_unlock_ast(), call wake_up() on lockres before releasing the spin lock on it. As soon as the spin lock is released, the lockres can be freed. Signed-off-by:
David Teigland <teigland@redhat.com> Signed-off-by:
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David Teigland authored
The locking_state dump, ocfs2_dlm_seq_show, reads the lvb on locks where it has not yet been initialized by a lock call. Signed-off-by:
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Coly Li authored
This patch fixes two typos in comments of ocfs2. Signed-off-by:
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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: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ [libata] pata_rb532_cf: fix signature of the xfer function [libata] pata_rb532_cf: fix and rename register definitions ata_piix: add borked Tecra M4 to broken suspend list
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infinibandLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mlx4: Fix MTT leakage in resize CQ IB/ehca: Fix problem with generated flush work completions IB/ehca: Change misleading error message on memory hotplug mlx4_core: Save/restore default port IB capability mask
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Tejun Heo authored
Some recent Seagate harddrives have firmware bug which causes FLUSH CACHE to timeout under certain circumstances if NCQ is being used. This can be worked around by disabling NCQ and fixed by updating the firmware. Implement ATA_HORKAGE_FIRMWARE_UPDATE and blacklist these devices. The wiki page has been updated to contain information on this issue. http://ata.wiki.kernel.org/index.php/Known_issuesSigned-off-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
Jeff Garzik <jgarzik@redhat.com>
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Phil Sutter authored
Per definition, this function should return the number of bytes consumed. As the original parameter "buflen" is being decremented inside the read/write loop, save it in "retlen" at the beginning. Signed-off-by:
Phil Sutter <n0-1@freewrt.org> Acked-by:
Sergei Shtyltov <sshtylyov@ru.mvista.com> Acked-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Acked-by:
Florian Fainelli <florian@openwrt.org> Signed-off-by:
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Phil Sutter authored
The original standalone driver uses a custom address for the error register. Use it in pata_rb532_cf, too. Rename two register definitions: - The address offset 0x0800 in fact is the ATA base, not ATA command address. - The offset 0x0C00 is not a regular ATA data address, but a buffered one allowing 4-byte IO. Signed-off-by:
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Tejun Heo authored
Tecra M4 sometimes forget what it is and reports bogus data via DMI which makes the machine evade broken suspend matching and thus fail suspend/resume. This patch updates piix_broken_suspend() such that it can match such case. As the borked DMI data is a bit generic, matching many entries to make the match more specific is necessary. As the usual DMI matching is limited to four entries, this patch uses hard coded manual matching. This is reported by Alexandru Romanescu. Signed-off-by:
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Roland Dreier authored
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Jack Morgenstein authored
When resizing a CQ, MTTs associated with the old CQE buffer were not freed. As a result, if any app used resize CQ repeatedly, all MTTs were eventually exhausted, which led to all memory registration operations failing until the driver is reloaded. Once the RESIZE_CQ command returns successfully from FW, FW no longer accesses the old CQ buffer, so it is safe to deallocate the MTT entries used by the old CQ buffer. Finally, if the RESIZE_CQ command fails, the MTTs allocated for the new CQEs buffer also need to be de-allocated. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1416>. Signed-off-by:
Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by:
Roland Dreier <rolandd@cisco.com>
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Stefan Roscher authored
This fix enables ehca device driver to generate flush work completions even if the application doesn't request completions for all work requests. The current implementation of ehca will generate flush work completions for the wrong work requests if an application uses non signaled work completions. Signed-off-by:
Stefan Roscher <stefan.roscher@de.ibm.com> Signed-off-by:
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Joachim Fenkes authored
The error message printed when the eHCA driver prevents memory hotplug is misleading -- the user might think that hot-removing the lhca, hotplugging memory, then hot-adding the lhca again will work, but it actually doesn't. Signed-off-by:
Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: ieee1394: sbp2: fix race condition in state change ieee1394: fix list corruption (reported at module removal) firewire: fw-sbp2: another iPod mini quirk entry ieee1394: sbp2: another iPod mini quirk entry
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hidLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: Apple ALU wireless keyboards are bluetooth devices HID: remove setup mutex, fix possible deadlock HID: add USB ID for another dual gameron adapter HID: unignore mouse on unibody macbooks HID: fix blacklist entries for greenasia/pantherlord
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Kevin Hao authored
We alloc a fake tty in usb serial console setup function. we should init the tty's kref otherwise we will face WARN_ON after following invoke of tty_port_tty_set --> tty_kref_get. Signed-off-by:
Kevin Hao <kexin.hao@windriver.com> Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Will Newton authored
When no console is configured tty_open tries to call kref_get on a NULL pointer, return ENODEV instead. Signed-off-by:
Will Newton <will.newton@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: USB: serial: add more Onda device ids to option driver USB: usb-storage: unusual_devs entry for Nikon D2H USB: storage: unusual_devs entry for Mio C520-GPS USB: fsl_usb2_udc: Report disconnect before unbinding USB: fsl_qe_udc: Report disconnect before unbinding USB: fix SB600 USB subsystem hang bug Revert "USB: improve ehci_watchdog's side effect in CPU power management"
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc: Fix build for 32-bit SMP configs
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