- 24 2月, 2008 40 次提交
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由 Li Zefan 提交于
Cgroup requires the subsystem to return negative error code on error in the create method. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: NBalbir Singh <balbir@in.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
Remove this VM_BUG_ON(), as Balbir stated: We used to have a for loop with !list_empty() as a termination condition and VM_BUG_ON(!pc) is a spill over. With the new loop, VM_BUG_ON(!pc) does not make sense. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NBalbir Singh <balbir@in.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
- remove trailing " Bytes"s in the demonstration - remove section 4.4 (feature control_type has been removed) - fix reference section Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: NBalbir Singh <balbir@in.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
The list head res->tasks gets initialized twice in find_css_set(). Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
Cgroup uses unsigned long for subsys bitops, not unsigned long long. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
opts.release_agent is not kfree()ed in all necessary places. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
- replace old name 'cont' with 'cgrp' (Paul Menage did this cleanup for cgroup.c in commit bd89aabc) - remove a duplicate declaration of cgroup_path() Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
fix: - comments about need_forkexit_callback - comments about release agent - typo and comment style, etc. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
Misc fixes and updates, make the doc consistent with current cgroup implementation. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexander van Heukelum 提交于
WARNING: vmlinux.o(.meminit.text+0x649): Section mismatch in reference from the function free_area_init_core() to the function .init.text:setup_usemap() The function __meminit free_area_init_core() references a function __init setup_usemap(). If free_area_init_core is only used by setup_usemap then annotate free_area_init_core with a matching annotation. The warning is covers this stack of functions in mm/page_alloc.c: alloc_bootmem_node must be marked __init. alloc_bootmem_node is used by setup_usemap, if !SPARSEMEM. (usemap_size is only used by setup_usemap, if !SPARSEMEM.) setup_usemap is only used by free_area_init_core. free_area_init_core is only used by free_area_init_node. free_area_init_node is used by: arch/alpha/mm/numa.c: __init paging_init() arch/arm/mm/init.c: __init bootmem_init_node() arch/avr32/mm/init.c: __init paging_init() arch/cris/arch-v10/mm/init.c: __init paging_init() arch/cris/arch-v32/mm/init.c: __init paging_init() arch/m32r/mm/discontig.c: __init zone_sizes_init() arch/m32r/mm/init.c: __init zone_sizes_init() arch/m68k/mm/motorola.c: __init paging_init() arch/m68k/mm/sun3mmu.c: __init paging_init() arch/mips/sgi-ip27/ip27-memory.c: __init paging_init() arch/parisc/mm/init.c: __init paging_init() arch/sparc/mm/srmmu.c: __init srmmu_paging_init() arch/sparc/mm/sun4c.c: __init sun4c_paging_init() arch/sparc64/mm/init.c: __init paging_init() mm/page_alloc.c: __init free_area_init_nodes() mm/page_alloc.c: __init free_area_init() and mm/memory_hotplug.c: hotadd_new_pgdat() hotadd_new_pgdat can not be an __init function, but: It is compiled for MEMORY_HOTPLUG configurations only MEMORY_HOTPLUG depends on SPARSEMEM || X86_64_ACPI_NUMA X86_64_ACPI_NUMA depends on X86_64 ARCH_FLATMEM_ENABLE depends on X86_32 ARCH_DISCONTIGMEM_ENABLE depends on X86_32 So X86_64_ACPI_NUMA implies SPARSEMEM, right? So we can mark the stack of functions __init for !SPARSEMEM, but we must mark them __meminit for SPARSEMEM configurations. This is ok, because then the calls to alloc_bootmem_node are also avoided. Compile-tested on: silly minimal config defconfig x86_32 defconfig x86_64 defconfig x86_64 -HIBERNATION +MEMORY_HOTPLUG Signed-off-by: NAlexander van Heukelum <heukelum@fastmail.fm> Reviewed-by: NSam Ravnborg <sam@ravnborg.org> Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Casey Schaufler 提交于
Update the Smack LSM to allow the registration of the capability "module" as a secondary LSM. Integrate the new hooks required for file based capabilities. Signed-off-by: NCasey Schaufler <casey@schaufler-ca.com> Cc: Serge Hallyn <serue@us.ibm.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Paul Moore <paul.moore@hp.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Srinivasa Ds 提交于
Kprobes makes use of preempt_disable(),preempt_enable_noresched() and these functions inturn call add/sub_preempt_count(). So we need to refuse user from inserting probe in to these functions. This patch disallows user from probing add/sub_preempt_count(). Signed-off-by: NSrinivasa DS <srinivasa@in.ibm.com> Acked-by: NAnanth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andi Kleen 提交于
Document huge memory/cache overhead of memory controller in Kconfig I was a little surprised that 2.6.25-rc* increased struct page for the memory controller. At least on many x86-64 machines it will not fit into a single cache line now anymore and also costs considerable amounts of RAM. At earlier review I remembered asking for a external data structure for this. It's also quite unobvious that a innocent looking Kconfig option with a single line Kconfig description has such a negative effect. This patch attempts to document these disadvantages at least so that users configuring their kernel can make a informed decision. Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Balbir Singh <balbir@in.ibm.com> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Richard Kennedy 提交于
When running "make htmldocs" I'm seeing some non-fatal perl errors caused by trying to parse the callback function definitions in blk-core.c. The errors are "Use of uninitialized value in concatenation (.)..." in combination with: Warning(linux-2.6.25-rc2/block/blk-core.c:1877): No description found for parameter '' The function pointers are defined without a * i.e. int (drv_callback)(struct request *) The compiler is happy with them, but kernel-doc isn't. This patch teaches create_parameterlist in kernel-doc to parse this type of function pointer definition, but is it the right way to fix the problem ? The problem only seems to occur in blk-core.c. However with the patch applied, kernel-doc finds the correct parameter description for the callback in blk_end_request_callback, which is doesn't normally. I thought it would be a bit odd to change to code to use the more normal form of function pointers just to get the documentation to work, so I fixed kernel-doc instead - even though this is teaching it to understand code that might go away (The comment for blk_end_request_callback says that it should not be used and will removed at some point). Signed-off-by: NRichard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Yoshinori Sato 提交于
defconfig update. Signed-off-by: NYoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Yoshinori Sato 提交于
- add missing file and declare. - remove unused file and macros. - some cleanup. Signed-off-by: NYoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Yoshinori Sato 提交于
get_user const *ptr access fix. Signed-off-by: NYoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Yoshinori Sato 提交于
typo fix. Signed-off-by: NYoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Thomas Gleixner 提交于
Not all architectures implement futex_atomic_cmpxchg_inatomic(). The default implementation returns -ENOSYS, which is currently not handled inside of the futex guts. Futex PI calls and robust list exits with a held futex result in an endless loop in the futex code on architectures which have no support. Fixing up every place where futex_atomic_cmpxchg_inatomic() is called would add a fair amount of extra if/else constructs to the already complex code. It is also not possible to disable the robust feature before user space tries to register robust lists. Compile time disabling is not a good idea either, as there are already architectures with runtime detection of futex_atomic_cmpxchg_inatomic support. Detect the functionality at runtime instead by calling cmpxchg_futex_value_locked() with a NULL pointer from the futex initialization code. This is guaranteed to fail, but the call of futex_atomic_cmpxchg_inatomic() happens with pagefaults disabled. On architectures, which use the asm-generic implementation or have a runtime CPU feature detection, a -ENOSYS return value disables the PI/robust features. On architectures with a working implementation the call returns -EFAULT and the PI/robust features are enabled. The relevant syscalls return -ENOSYS and the robust list exit code is blocked, when the detection fails. Fixes http://lkml.org/lkml/2008/2/11/149 Originally reported by: Lennart Buytenhek Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: Lennert Buytenhek <buytenh@wantstofly.org> Cc: Riku Voipio <riku.voipio@movial.fi> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Thomas Gleixner 提交于
When the futex init code fails to initialize the futex pseudo file system it returns early without initializing the hash queues. Should the boot succeed then a futex syscall which tries to enqueue a waiter on the hashqueue will crash due to the unitilialized plist heads. Initialize the hash queues before the filesystem. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: Lennert Buytenhek <buytenh@wantstofly.org> Cc: Riku Voipio <riku.voipio@movial.fi> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jean Delvare 提交于
Adding the same item to a given linked list more than once is guaranteed to break and corrupt the list. This is however what we do in dmi_scan since commit 79da4721 ("x86: fix DMI out of memory problems"). Given that there is absolutely no interest in saving empty OEM strings anyway, I propose the simple and efficient fix below: we discard the empty OEM strings altogether. Signed-off-by: NJean Delvare <khali@linux-fr.org> Acked-by: NParag Warudkar <parag.warudkar@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Sergio Luis 提交于
Fix following warnings: WARNING: drivers/video/built-in.o(.text+0x7c64a): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/video/built-in.o(.text+0x7c65d): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/video/built-in.o(.text+0x7c679): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/video/built-in.o(.text+0x7c699): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/video/built-in.o(.text+0x7c69f): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/built-in.o(.text+0xa3676): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/built-in.o(.text+0xa3689): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/built-in.o(.text+0xa36a5): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/built-in.o(.text+0xa36c5): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: drivers/built-in.o(.text+0xa36cb): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: vmlinux.o(.text+0x4a079a): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: vmlinux.o(.text+0x4a07ad): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: vmlinux.o(.text+0x4a07c9): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: vmlinux.o(.text+0x4a07e9): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan WARNING: vmlinux.o(.text+0x4a07ef): Section mismatch in reference from the function param_set_scroll() to the variable .devinit.data:ypan Remove __devinitdata annotation from the variable ypan. Signed-off-by: NSergio Luis <sergio@larces.uece.br> Cc: Michal Januszewski <spock@gentoo.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Eugene Teo 提交于
RLIMIT_RTTIME was introduced to allow the user to set a runtime timeout on real-time tasks: http://lkml.org/lkml/2007/12/18/218. This patch updates /proc/<pid>/limits with the new rlimit. Signed-off-by: NEugene Teo <eugeneteo@kernel.sg> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Christoph Hellwig 提交于
Merge include/linux/efs_fs{_i,_dir}.h into fs/efs/efs.h. efs_vh.h remains there because this is the IRIX volume header and shouldn't really be handled by efs but by the partitioning code. efs_sb.h remains there for now because it's exported to userspace. Of course this wrong and aboot should have a copy of it's own, but I'll leave that to a separate patch to avoid any contention. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Paul Clements 提交于
NBD doesn't work well with CFQ (or AS) schedulers, so let's default to something else. The two problems I have experienced with nbd and cfq are: 1) nbd hangs with cfq on RHEL 5 (2.6.18) -- this may well have been fixed There's a similar debian bug that has been filed as well: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=447638 There have been posts to nbd-general mailing list about problems with cfq and nbd also. 2) nbd performs about 10% better (the last time I tested) with deadline vs. cfq (the overhead of cfq doesn't provide much advantage to nbd [not being a real disk], and you end up going through the I/O scheduler on the nbd server anyway, so it makes sense that deadline is better with nbd) Signed-off-by: NPaul Clements <paul.clements@steeleye.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jeff Dike 提交于
Commit ee3d9bd4 ("uml: simplify SIGSEGV handling"), while greatly simplifying the kernel SIGSEGV handler that runs in the process address space, introduced a bug which corrupts FP state in the process. Previously, the SIGSEGV handler called the sigreturn system call by hand - it couldn't return through the restorer provided to it because that could try to call the libc restorer which likely wouldn't exist in the process address space. So, it blocked off some signals, including SIGUSR1, on entry to the SIGSEGV handler, queued a SIGUSR1 to itself, and invoked sigreturn. The SIGUSR1 was delivered, and was visible to the UML kernel after sigreturn finished. The commit eliminated the signal masking and the call to sigreturn. The handler simply hits itself with a SIGTRAP to let the UML kernel know that it is finished. UML then restores the process registers, which effectively longjmps the process out of the signal handler, skipping sigreturn's restoring of register state and the signal mask. The bug is that the host apparently sets used_fp to 0 when it saves the process FP state in the sigcontext on the process signal stack. Thus, when the process is longjmped out of the handler, its FP state is corrupt because it wasn't saved on the context switch to the UML kernel. This manifested itself as sleep hanging. For some reason, sleep uses floating point in order to calculate the sleep interval. When a page fault corrupts its FP state, it is faked into essentially sleeping forever. This patch saves the FP state before entering the SIGSEGV handler and restores it afterwards. Signed-off-by: NJeff Dike <jdike@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johann Felix Soden 提交于
In commit 1aa351a3 ("uml: tidy helper code") the arguments of helper_wait() were changed. The adaptation of harddog_user.c was forgotten, so this errors occur: /arch/um/drivers/harddog_user.c: In function 'start_watchdog': /arch/um/drivers/harddog_user.c:82: error: too many arguments to function 'helper_wait' /arch/um/drivers/harddog_user.c:89: error: too many arguments to function 'helper_wait' Signed-off-by: NJohann Felix Soden <johfel@users.sourceforge.net> Signed-off-by: NJeff Dike <jdike@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jeff Dike 提交于
The macros which extract registers from a struct sigcontext are no longer needed and can be removed. They are starting not to build anyway, given the removal of the 'e' and 'r' from register names during the x86 merge. Cc: Jiri Olsa <olsajiri@gmail.com> Signed-off-by: NJeff Dike <jdike@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jean Delvare 提交于
Now that we gather on-board devices from both DMI types 10 and 41, there is a possibility that we list the same device twice. In order to not confuse drivers, and also to save memory, make sure that we do not add duplicate devices to the dmi_devices list. Signed-off-by: NJean Delvare <khali@linux-fr.org> Cc: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Brownell 提交于
For the "cmos" RTC, have /proc/driver/rtc say whether HPET based IRQ emulation is in effect. Given the problems we've had with this particular hardware maldesign (and the fact that most BIOS code seems not to provide the IRQ routing needed to use the saner HPET modes), this should help troubleshooting. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Michael Buesch 提交于
It turns out that I rewrote the HWRNG core once to make it pluggable, but I'm not a crypto-expert at all. So I'm certainly the wrong person for being a maintainer of the HWRNG core. Let's orphan it. Signed-off-by: NMichael Buesch <mb@bu3sch.de> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KOSAKI Motohiro 提交于
Current implementation of cpuset track N_HIGH_MEMORY instead N_MEMORY. (N_MEMORY doesn't exist in current implementation) Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: NPaul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Paul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ned Forrester 提交于
Fixes a sequencing bug in spi driver pxa2xx_spi.c in which the chip select for a transfer may be asserted before the clock polarity is set on the interface. As a result of this bug, the clock signal may have the wrong polarity at transfer start, so it may need to make an extra half transition before the intended clock/data signals begin. (This probably means all transfers are one bit out of sequence.) This only occurs on the first transfer following a change in clock polarity in systems using more than one more than one such polarity. The fix assures that the clock mode is properly set before asserting chip select. This bug was introduced in a patch merged on 2006/12/10, kernel 2.6.20. The patch defines an additional bit in: include/asm-arm/arch-pxa/regs-ssp.h for 2.6.25 and newer kernels but this addition must be made in: include/asm-arm/arch-pxa/pxa-regs.h for kernels between 2.6.20 and 2.6.24, inclusive Signed-off-by: NNed Forrester <nforrester@whoi.edu> Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Atsushi Nemoto 提交于
The atmel_spi driver does not initialize clock polarity correctly (except for at91rm9200 CS0 channel) in some case. The atmel_spi driver uses gpio-controlled chipselect. OTOH spi clock signal is controlled by CSRn.CPOL bit, but this register controls clock signal correctly only in 'real transfer' duration. At the time of cs_activate() call, CSRn.CPOL will be initialized correctly, but the controller do not know which channel is to be used next, so clock signal will stay at the inactive state of last transfer. If clock polarity of new transfer and last transfer was differ, new transfer will start with wrong clock signal state. For example, if you started SPI MODE 2 or 3 transfer after SPI MODE 0 or 1 transfer, the clock signal state at the assertion of chipselect will be low. Of course this will violates SPI transfer. This patch is short term solution for this problem. It makes all CSRn.CPOL match for the transfer before activating chipselect. For longer term, the best fix might be to let NPCS0 stay selected permanently in MR and overwrite CSR0 with to the new slave's settings before asserting CS. Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: NHaavard Skinnemoen <hskinnemoen@atmel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Hoang-Nam Nguyen 提交于
lib/vsprintf.c: Fix bug omitting minus sign of numbers (module_param) Signed-off-by: NHoang-Nam Nguyen <hnguyen@de.ibm.com> Cc: Yi Yang <yi.y.yang@intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Make is_vmalloc_addr() contingent on CONFIG_MMU=y, as it won't compile in !MMU mode. [ Bug introduced in commit 9e2779fa: "is_vmalloc_addr(): Check if an address is within the vmalloc boundaries" ]. Signed-off-by: NDavid Howells <dhowells@redhat.com> Cc: Greg Ungerer <gerg@snapgear.com> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Haavard Skinnemoen 提交于
We should only return IRQ_HANDLED when we actually found something to handle. This is important since the USART interrupt handler may be shared with the timer interrupt on some chips. Pointed-out-by: Nmichael <trimarchi@gandalf.sssup.it> Signed-off-by: NHaavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 mark gross 提交于
The following is a clean up and correction of the copyright holding entities for the files associated with the intel iommu code. Signed-off-by: <mgross@linux.intel.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Rientjes 提交于
Fix build failure on sparc: In file included from include/linux/mm.h:39, from include/linux/memcontrol.h:24, from include/linux/swap.h:8, from include/linux/suspend.h:7, from init/do_mounts.c:6: include/asm/pgtable.h:344: warning: parameter names (without types) in function declaration include/asm/pgtable.h:345: warning: parameter names (without types) in function declaration include/asm/pgtable.h:346: error: expected '=', ',', ';', 'asm' or '__attribute__' before '___f___swp_entry' viro sayeth: I've run allmodconfig builds on a bunch of target, FWIW (essentially the same patch). Note that these includes are recent addition caused by added inline function that had since then become a define. So while I agree with your comments in general, in _this_ case it's pretty safe. The commit that had done it is 3062fc67 ("memcontrol: move mm_cgroup to header file") and the switch to #define is in commit 60c12b12 ("memcontrol: add vm_match_cgroup()") (BTW, that probably warranted mentioning in the changelog of the latter). Cc: Adrian Bunk <bunk@kernel.org> Cc: Robert Reif <reif@earthlink.net> Signed-off-by: NDavid Rientjes <rientjes@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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