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* rtc: fix platform driver hotplug/coldplugKay Sievers2008-04-11
| | | | | | | | | | | | | | Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable RTC platform drivers, to re-enable module auto loading. [dbrownell@users.sourceforge.net: more drivers, minor fix] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* watchdog: fix platform driver hotplug/coldplugKay Sievers2008-04-11
| | | | | | | | | | | | | | Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable watchdog drivers, to re-enable auto loading. [dbrownell@users.sourceforge.net: more drivers; registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* usb host: fix platform driver hotplug/coldplugKay Sievers2008-04-11
| | | | | | | | | | | | | Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable USB HCDs, to allow re-enable auto loading. [dbrownell@users.sourceforge.net: more drivers; registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* usb gadget: fix platform driver hotplug/coldplugKay Sievers2008-04-11
| | | | | | | | | | | | | Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable usb peripheral drivers, to re-eable module auto loading. [dbrownell@users.sourceforge.net: registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: fix platform driver hotplug/coldplugKay Sievers2008-04-11
| | | | | | | | | | | | Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable SPI platform drivers, to allow module auto loading. [dbrownell@users.sourceforge.net: more drivers: registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.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>
* eventfd/kaio integration fixDavide Libenzi2008-04-11
| | | | | | | | | | | | | | | Jeff Roberson discovered a race when using kaio eventfd based notifications. When it occurs it can lead tomissed wakeups and hung userspace. This patch fixes the race by moving the notification inside the spinlocked section of kaio. The operation is safe since eventfd spinlock and kaio one are unrelated. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Zach Brown <zach.brown@oracle.com> Cc: Jeff Roberson <jroberson@chesapeake.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: rtc-s35390a.c needs the bitreverse libraryRandy Dunlap2008-04-11
| | | | | | | | | | | | | | | rtc-s35390a uses BITREVERSE functions so it needs to select that config symbol to ensure that the functions are built. drivers/built-in.o: In function `s35390a_set_datetime': linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:144: undefined reference to `byte_rev_table' drivers/built-in.o: In function `s35390a_get_datetime': linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:163: undefined reference to `byte_rev_table' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-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>
* cgroups: include hierarchy ids in /proc/<pid>/cgroupPaul Menage2008-04-11
| | | | | | | | | | | | | | | | | | Extend the /proc/<pid>/cgroup file to include the appropriate hierarchy ID on each line. Currently this ID isn't really needed since a hierarchy can be completely identified by the set of subsystems bound to it, but this is likely to change in the near future in order to support stateless subsystems and merging/rebinding of subsystems. Getting this change into 2.6.25 reduces the need for an API change later. Signed-off-by: Paul Menage <menage@google.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add commentary about the new "asmlinkage_protect()" macroLinus Torvalds2008-04-10
| | | | | | | | | | | | | | It's really a pretty ugly thing to need, and some day it will hopefully be obviated by teaching gcc about the magic calling conventions for the low-level system call code, but in the meantime we can at least add big honking comments about why we need these insane and strange macros. I took my comments from my version of the macro, but I ended up deciding to just pick Roland's version of the actual code instead (with his prettier syntax that uses vararg macros). Thus the previous two commits that actually implement it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* asmlinkage_protect sys_io_geteventsRoland McGrath2008-04-10
| | | | | | | | | | | Use asmlinkage_protect in sys_io_getevents, because GCC for i386 with CONFIG_FRAME_POINTER=n can decide to clobber an argument word on the stack, i.e. the user struct pt_regs. Here the problem is not a tail call, but just the compiler's use of the stack when it inlines and optimizes the body of the called function. This seems to avoid it. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* asmlinkage_protect replaces prevent_tail_callRoland McGrath2008-04-10
| | | | | | | | | | | | | | | | | | | | | | The prevent_tail_call() macro works around the problem of the compiler clobbering argument words on the stack, which for asmlinkage functions is the caller's (user's) struct pt_regs. The tail/sibling-call optimization is not the only way that the compiler can decide to use stack argument words as scratch space, which we have to prevent. Other optimizations can do it too. Until we have new compiler support to make "asmlinkage" binding on the compiler's own use of the stack argument frame, we have work around all the manifestations of this issue that crop up. More cases seem to be prevented by also keeping the incoming argument variables live at the end of the function. This makes their original stack slots attractive places to leave those variables, so the compiler tends not clobber them for something else. It's still no guarantee, but it handles some observed cases that prevent_tail_call() did not. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: Simplify cpu_idle_waitVenki Pallipadi2008-04-10
| | | | | | | | | | | | | | | | | | | | | | | This patch also resolves hangs on boot: http://lkml.org/lkml/2008/2/23/263 http://bugzilla.kernel.org/show_bug.cgi?id=10093 The bug was causing once-in-few-reboots 10-15 sec wait during boot on certain laptops. Earlier commit 40d6a146629b98d8e322b6f9332b182c7cbff3df added smp_call_function in cpu_idle_wait() to kick cpus that are in tickless idle. Looking at cpu_idle_wait code at that time, code seemed to be over-engineered for a case which is rarely used (while changing idle handler). Below is a simplified version of cpu_idle_wait, which just makes a dummy smp_call_function to all cpus, to make them come out of old idle handler and start using the new idle handler. It eliminates code in the idle loop to handle cpu_idle_wait. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lzo: fix typo in decompressorHarvey Harrison2008-04-10
| | | | | | | | | Shift of a LE value seems strange, probably meant to shift the cpu-order variable as in the prvious section of the switch statement. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* FRV: Don't make smp_{r, w, }mb() interpolate MEMBAR when CONFIG_SMP=n [try #2]David Howells2008-04-10
| | | | | | | | Don't make smp_{r,w,}mb() interpolate a MEMBAR instruction when CONFIG_SMP=n as SMP memory barries on UP systems should interpolate a compiler barrier only. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* FRV: Make NOMMU-mode work with base addresses other than 0xC0000000 [try #2]David Howells2008-04-10
| | | | | | | | | | | | | | Make NOMMU-mode work with base addresses other than 0xC0000000 by: (1) Giving the code that sets up the protection registers the right address in __sdram_base. Rather than being hard coded to 0xC0000000, the value of __page_offset is obtained from the linker script. (2) Eliminate the check in __switch_to() that verifies the current thread info is in the 0xCxxxxxxx region. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* FRV: Add support for emulation of userspace atomic ops [try #2]David Howells2008-04-10
| | | | | | | | Use traps 120-126 to emulate atomic cmpxchg32, xchg32, and XOR-, OR-, AND-, SUB- and ADD-to-memory operations for userspace. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* FRV: Move STACK_TOP_MAX up [try #2]David Howells2008-04-10
| | | | | | | | Move STACK_TOP_MAX up so that we don't try moving the stack above it as that causes setup_arg_pages() to malfunction. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* FRV: Handle update_mmu_cache() being called when current->mm is NULL [try #2]David Howells2008-04-10
| | | | | | | | | | | | | | | Handle update_mmu_cache() being called when current->mm is NULL. We cache static TLB mappings for the current page table in DAMPR4 and DAMPR5 on the theory that the next data lookup is likely to be in the same general region, and thus is likely to be mapped by the same page table. However, we can't get this information if we can't access the appropriate mm_struct. If current->mm is NULL, we just clear the cache in the knowledge that the TLB miss handlers will load it. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds2008-04-10
|\ | | | | | | | | | | | | * 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: [XFS] Ensure "both" features2 slots are consistent [XFS] Fix superblock features2 field alignment problem [XFS] remove shouting-indirection macros from xfs_sb.h
| * [XFS] Ensure "both" features2 slots are consistentEric Sandeen2008-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since older kernels may look in the sb_bad_features2 slot for flags, rather than zeroing it out on fixup, we should make it equal to the sb_features2 value. Also, if the ATTR2 flag was not found prior to features2 fixup, it was not set in the mount flags, so re-check after the fixup so that the current session will use the feature. Also fix up the comments to reflect these changes. SGI-PV: 980085 SGI-Modid: xfs-linux-melb:xfs-kern:30778a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Fix superblock features2 field alignment problemDavid Chinner2008-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to the xfs_dsb_t structure not being 64 bit aligned, the last field of the on-disk superblock can vary in location This causes problems when the filesystem gets moved to a different platform, or there is a 32 bit userspace and 64 bit kernel. This patch detects the defect at mount time, logs a warning such as: XFS: correcting sb_features alignment problem in dmesg and corrects the problem so that everything is OK. it also blacklists the bad field in the superblock so it does not get used for something else later on. SGI-PV: 977636 SGI-Modid: xfs-linux-melb:xfs-kern:30539a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] remove shouting-indirection macros from xfs_sb.hEric Sandeen2008-04-10
| | | | | | | | | | | | | | | | | | | | | | | | Remove macro-to-small-function indirection from xfs_sb.h, and remove some which are completely unused. SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:30528a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2008-04-10
|\ \ | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: cfq-iosched: do not leak ioc_data across iosched switches splice: fix infinite loop in generic_file_splice_read()
| * | cfq-iosched: do not leak ioc_data across iosched switchesFabio Checconi2008-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When switching scheduler from cfq, cfq_exit_queue() does not clear ioc->ioc_data, leaving a dangling pointer that can deceive the following lookups when the iosched is switched back to cfq. The pattern that can trigger that is the following: - elevator switch from cfq to something else; - module unloading, with elv_unregister() that calls cfq_free_io_context() on ioc freeing the cic (via the .trim op); - module gets reloaded and the elevator switches back to cfq; - reallocation of a cic at the same address as before (with a valid key). To fix it just assign NULL to ioc_data in __cfq_exit_single_io_context(), that is called from the regular exit path and from the elevator switching code. The only path that frees a cic and is not covered is the error handling one, but cic's freed in this way are never cached in ioc_data. Signed-off-by: Fabio Checconi <fabio@gandalf.sssup.it> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | splice: fix infinite loop in generic_file_splice_read()Jens Axboe2008-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's a quirky loop in generic_file_splice_read() that could go on indefinitely, if the file splice returns 0 permanently (and not just as a temporary condition). Get rid of the loop and pass back -EAGAIN correctly from __generic_file_splice_read(), so we handle that condition properly as well. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | HFS+: fix unlink of linksRoman Zippel2008-04-10
|/ / | | | | | | | | | | | | | | | | | | | | Some time ago while attempting to handle invalid link counts, I botched the unlink of links itself, so this patch fixes this now correctly, so that only the link count of nodes that don't point to links is ignored. Thanks to Vlado Plaga <rechner@vlado-do.de> to notify me of this problem. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | pop previous section in alternative.cSteven Rostedt2008-04-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc expects all toplevel assembly to return to the original section type. The code in alteranative.c does not do this. This caused some strange bugs in sched-devel where code would end up in the .rodata section and when the kernel sets the NX bit on all .rodata, the kernel would crash when executing this code. This patch adds a .previous marker to return the code back to the original section. Credit goes to Andrew Pinski for telling me it wasn't a gcc bug but a bug in the toplevel asm code in the kernel. ;-) Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2008-04-09
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6: SELinux: don't BUG if fs reuses a superblock
| * | SELinux: don't BUG if fs reuses a superblockEric Paris2008-04-09
| |/ | | | | | | | | | | | | | | | | | | | | | | | | I (wrongly) assumed that nfs_xdev_get_sb() would not ever share a superblock and so cloning mount options would always be correct. Turns out that isn't the case and we could fall over a BUG_ON() that wasn't a BUG at all. Since there is little we can do to reconcile different mount options this patch just leaves the sb alone and the first set of options wins. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: James Morris <jmorris@namei.org>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2008-04-09
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: ata/sata_fsl: Remove unused variable in sata_fsl_probe pata_sil680: Fix build on arch/ppc
| * | ata/sata_fsl: Remove unused variable in sata_fsl_probeJohann Felix Soden2008-04-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In sata_fsl_probe memory is allocated but never used or deallocated. Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=10404 Thanks to Daniel Marjamäki for the bug report. Reported-by: Daniel Marjamäki <danielm77@spray.se> Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | pata_sil680: Fix build on arch/ppcBenjamin Herrenschmidt2008-04-09
| |/ | | | | | | | | | | | | | | | | | | | | Commit 0f436eff54f90419ac1b8accfb3e6e17c4b49a4e breaks build on arch/ppc as it doesn't implement the machine_is() macro. This fixes it by using CONFIG_PPC_MERGE instead which represents arch/powerpc only, while CONFIG_PPC is set for both. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | Merge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2008-04-08
|\ \ | | | | | | | | | | | | | | | | | | | | | * 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Fix a memory leak in rpc_create() fix bug - executing FDPIC ELF on NFS mount triggers BUG() at mm/nommu.c:862:/do_mmap_private() NFS: initialize flags field in nfs_open_context SUNRPC: don't call flush_dcache_page() with an invalid pointer
| * | SUNRPC: Fix a memory leak in rpc_create()Chuck Lever2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 510deb0d was supposed to move the xprt_create_transport() call in rpc_create(), but neglected to remove the old call site. This resulted in a transport leak after every rpc_create() call. This leak is present in 2.6.24 and 2.6.25. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | fix bug - executing FDPIC ELF on NFS mount triggers BUG() at ↵Bryan Wu2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mm/nommu.c:862:/do_mmap_private() NFS needs a NOMMU version mmap function to support uClinux on NOMMU machine http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_id=141&tracker_item_id=3992 Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS: initialize flags field in nfs_open_contextJeff Layton2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nfs_open_context struct had a "flags" field added recently, but the allocator isn't initializing it. It also looks like the allocator isn't initializing the mode or list either, but they seem to be overwritten by the caller, so that's less of an issue. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: don't call flush_dcache_page() with an invalid pointerTrond Myklebust2008-04-08
| |/ | | | | | | | | | | | | | | | | Fix a problem in _copy_to_pages(), whereby it may call flush_dcache_page() with an invalid pointer due to the fact that 'pgto' gets incremented beyond the end of the page array. Fix is to exit the loop without this unnecessary increment of pgto. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | mtd/chips: add missing set_current_state() to cfi_{amdstd,staa}_sync()Dmitry Adamushko2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | cfi_amdstd_sync() and cfi_staa_sync() call schedule() without changing task's state appropriately. In case of e.g. chip->state == FL_ERASING, cfi_*_sync() will be busy-looping either redundantly for a fixed interval of time (for SCHED_NORMAL tasks) or possibly endlessly (for RT tasks and UP). Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | spi: spi_bfin5xx: remove unused labelMichael Hennerich2008-04-08
| | | | | | | | | | | | | | | | | | | | Remove unused label, and associated compiler warning. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.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>
* | spi: documentation tweaksDavid Brownell2008-04-08
| | | | | | | | | | | | | | | | | | | | Update SPI documentation to clarify some areas of recent confusion: clock polarity takes effect when chipselect goes active; and zero length buffers are OK in certain cases. 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>
* | spi: spi_bfin5xx: fix probe() sequencingVitja Makarov2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Fix bug in SPI probe: first initialize peripheral pins, and just after register spi master device. This fixes problems with SPI drivers built-in kernel. Singed-off-by: Vitja Makarov <vitja.makarov@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.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>
* | spi: spi_bfin5xx build fixMike Frysinger2008-04-08
| | | | | | | | | | | | | | | | | | | | | | Fix breakage cause by overzealous line wrapping; there should be only one format string. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.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>
* | acpi: fix "buggy BIOS check" when CPUs are hot removedAlok Kataria2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes a BUG in ACPI hotplugging. processor_device_array[pr->id] needs to be set to NULL when removing a CPU. Else the "buggy BIOS check" in acpi_processor_start mistakenly fires when a CPU is removed from the system and then later re-added. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Arai <arai@vmware.com> Cc: Len Brown <lenb@kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | es1968: fix sleep-while-holding-lock bugArjan van de Ven2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | snd_es1968_ac97_read() calls snd_es1968_ac97_wait() first outside a locked area, and later, while holding a lock. snd_es1968_ac97_wait() has a polling loop with a cond_resched() inside it.. which sleeps, so the second call is invalid. This patch adds a version of the wait function that just pure polls. While this is not very elegant in principle, it's very likely the easiest thing to do here, we already checked if the chip was ready (while yielding) just before, so it is very unlikely to take a long time here. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | memcg: fix node_state handlingKAMEZAWA Hiroyuki2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This should be N_NORMAL_MEMORY. N_NORMAL_MEMORY is "true" if a node has memory for the kernel. N_HIGH_MEMORY is "true" if a node has memory for HIGHMEM. (If CONFIG_HIGHMEM=n, always "true") This check is used for testing whether we can use kmalloc_node() on a node. Then, if there is a node which only contains HIGHMEM, the system will call kmalloc_node() which doesn't contain memory for the kernel. If it happens under SLUB, the kernel will panic. I think this only happens on x86_32-numa. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | acpi thermal: fix result checkKrzysztof Helt2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | thermal_zone_device_register() uses the ERR_PTR macro on its return values. A correct check is to use the IS_ERR() macro. The 2.6.25 kernels panic on Compaq AP550 without this patch as it has more then 10 (THERMAL_MAX_TRIPS) trip points (there are 12). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Len Brown <lenb@kernel.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ub: remove BUG() after __blk_end_request and fix the condition causing itPete Zaitcev2008-04-08
|/ | | | | | | | | | | | | | | | | | | | | | When __blk_end_request returns nonzero, it means that the request was not completely processed and some BIOs are still attached. Since we have dequeued it by that time, it means leaking requests and hanging processes, which is why BUG() was in there. In ub this happens if a packet request ends normally, but with residue (e.g. when scsi_id issues INQUIRY). The fix is to make sure that arguments passed to __blk_end_request are correct: the full request length and not just transferred length. The transferred length is indicated to applications by adjusting rq->data_len with old, unchanged code outside of this patch. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Cc: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Cc: Greg KH <greg@kroah.com> Cc: Boaz Harrosh <bharrosh@panasas.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-04-07
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6: SELinux: more GFP_NOFS fixups to prevent selinux from re-entering the fs code
| * SELinux: more GFP_NOFS fixups to prevent selinux from re-entering the fs codeStephen Smalley2008-04-07
| | | | | | | | | | | | | | | | More cases where SELinux must not re-enter the fs code. Called from the d_instantiate security hook. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* | pvrusb2: fix broken build due to patch order dependencyMichael Krufky2008-04-07
|/ | | | | | | | | Fix broken build due to patch order dependency. A future patch requires the lines that break the current build. Disable those lines for now. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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