- 07 Feb, 2013 5 commits
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Lai Jiangshan authored
SRCU has its own statemachine and no longer relies on normal RCU. Its read-side critical section can now be used by an offline CPU, so this commit removes the check and the comments, reverting the SRCU portion of ff195cb6 (rcu: Warn when srcu_read_lock() is used in an extended quiescent state). It also makes the codes match the comments in whatisRCU.txt: g. Do you need read-side critical sections that are respected even though they are in the middle of the idle loop, during user-mode execution, or on an offlined CPU? If so, SRCU is the only choice that will work for you. [ paulmck: There is at least one remaining issue, namely use of lockdep with tracing enabled. ] Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Lai Jiangshan authored
SRCU has its own statemachine and no longer relies on normal RCU. Its read-side critical section can now be used by an offline CPU, so this commit removes the check and the comments, reverting the SRCU portion of c0d6d01b (rcu: Check for illegal use of RCU from offlined CPUs). It also makes the code match the comments in whatisRCU.txt: g. Do you need read-side critical sections that are respected even though they are in the middle of the idle loop, during user-mode execution, or on an offlined CPU? If so, SRCU is the only choice that will work for you. [ paulmck: There is at least one remaining issue, namely use of lockdep with tracing enabled. ] Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Lai Jiangshan authored
Pack six lines of code into two lines. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Lai Jiangshan authored
Although synchronize_srcu() can sleep, it will not sleep if the fast path succeeds, which means that illegal use of synchronize_rcu() might go unnoticed. This commit therefore adds might_sleep(), which unconditionally catches illegal use of synchronize_rcu() from atomic context. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Lai Jiangshan authored
This commit replaces disabling of preemption and decrement of a per-CPU variable with this_cpu_dec(), which avoids preemption disabling on x86 and shortens the code on all platforms. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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- 06 Feb, 2013 1 commit
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Ingo Molnar authored
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU build fixlet from Paul E. McKenney. Signed-off-by: Ingo Molnar <mingo@kernel.org>
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- 04 Feb, 2013 2 commits
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Steven Rostedt authored
The uses of trace_clock_local() are dead code when CONFIG_RCU_TRACE=n, but some compilers might nevertheless generate code calling this function. This commit therefore ensures that trace_clock_local() is invoked only when CONFIG_RCU_TRACE=y. Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Ingo Molnar authored
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU updates from Paul E. McKenney: 1. Changes to rcutorture and to RCU documentation. Posted to LKML at https://lkml.org/lkml/2013/1/26/188. 2. Enhancements to uniprocessor handling in tiny RCU. Posted to LKML at https://lkml.org/lkml/2013/1/27/2. 3. Tag RCU callbacks with grace-period number to simplify callback advancement. Posted to LKML at https://lkml.org/lkml/2013/1/26/203. 4. Miscellaneous fixes. Posted to LKML at https://lkml.org/lkml/2013/1/26/204. Signed-off-by: Ingo Molnar <mingo@kernel.org>
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- 01 Feb, 2013 2 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dmLinus Torvalds authored
Pull more device-mapper fixes from Alasdair G Kergon: "A fix for stacked dm thin devices and a fix for the new dm WRITE SAME support." * tag 'dm-3.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: dm: fix write same requests counting dm thin: fix queue limits stacking
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- 31 Jan, 2013 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hidLinus Torvalds authored
PullHID fixes from Jiri Kosina: - fix i2c-hid and hidraw interaction, by Benjamin Tissoires - a quirk to make a particular device (Formosa IR receiver) work properly, by Nicholas Santos * 'for-3.8/upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: i2c-hid: fix i2c_hid_output_raw_report HID: usbhid: quirk for Formosa IR receiver HID: remove x bit from sensor doc
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git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds authored
Pull NFS client bugfixes from Trond Myklebust: - Error reporting in nfs_xdev_mount incorrectly maps all errors to ENOMEM - Fix an NFSv4 refcounting issue - Fix a mount failure when the server reboots during NFSv4 trunking discovery - NFSv4.1 mounts may need to run the lease recovery thread. - Don't silently fail setattr() requests on mountpoints - Fix a SUNRPC socket/transport livelock and priority queue issue - We must handle NFS4ERR_DELAY when resetting the NFSv4.1 session. * tag 'nfs-for-3.8-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4.1: Handle NFS4ERR_DELAY when resetting the NFSv4.1 session SUNRPC: When changing the queue priority, ensure that we change the owner NFS: Don't silently fail setattr() requests on mountpoints NFSv4.1: Ensure that nfs41_walk_client_list() does start lease recovery NFSv4: Fix NFSv4 trunking discovery NFSv4: Fix NFSv4 reference counting for trunked sessions NFS: Fix error reporting in nfs_xdev_mount
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git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds authored
Pull MIPS updates from Ralf Baechle: "A number of fixes all across the MIPS tree. No area is particularly standing out and things have cooled down quite nicely for a release." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: Function tracer: Fix broken function tracing mips: Move __virt_addr_valid() to a place for MIPS 64 MIPS: Netlogic: Fix UP compilation on XLR MIPS: AR71xx: Fix AR71XX_PCI_MEM_SIZE MIPS: AR724x: Fix AR724X_PCI_MEM_SIZE MIPS: Lantiq: Fix cp0_perfcount_irq mapping MIPS: DSP: Fix DSP mask for registers. MIPS: Fix build failure by adding definition of pfn_pmd(). MIPS: Octeon: Fix warning. MIPS: delay.c: Check BITS_PER_LONG instead of __SIZEOF_LONG__ MIPS: PNX833x: Fix comment. MIPS: Add struct p_format to union mips_instruction. MIPS: Export <asm/break.h>. MIPS: BCM47xx: Enable SSB prerequisite SSB_DRIVER_PCICORE. MIPS: BCM47xx: Select GPIOLIB for BCMA on bcm47xx platform MIPS: vpe.c: Fix null pointer dereference in print arguments.
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Benjamin Tissoires authored
i2c_hid_output_raw_report is used by hidraw to forward set_report requests. The current implementation of i2c_hid_set_report needs to take the report_id as an argument. The report_id is stored in the first byte of the buffer in argument of i2c_hid_output_raw_report. Not removing the report_id from the given buffer adds this byte 2 times in the command, leading to a non working command. Reported-by: Andrew Duggan <aduggan@synaptics.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Al Cooper authored
Function tracing is currently broken for all 32 bit MIPS platforms. When tracing is enabled, the kernel immediately hangs on boot. This is a result of commit b732d439 that changes the kernel/trace/Kconfig file so that is no longer forces FRAME_POINTER when FUNCTION_TRACING is enabled. MIPS frame pointers are generally considered to be useless because they cannot be used to unwind the stack. Unfortunately the MIPS function tracing code has bugs that are masked by the use of frame pointers. This commit fixes the bugs so that MIPS frame pointers don't need to be enabled. The bugs are a result of the odd calling sequence used to call the trace routine. This calling sequence is inserted into every traceable function when the tracing CONFIG option is enabled. This sequence is generated for 32bit MIPS platforms by the compiler via the "-pg" flag. Part of the sequence is "addiu sp,sp,-8" in the delay slot after every call to the trace routine "_mcount" (some legacy thing where 2 arguments used to be pushed on the stack). The _mcount routine is expected to adjust the sp by +8 before returning. So when not disabled, the original jalr and addiu will be there, so _mcount has to adjust sp. The problem is that when tracing is disabled for a function, the "jalr _mcount" instruction is replaced with a nop, but the "addiu sp,sp,-8" is still executed and the stack pointer is left trashed. When frame pointers are enabled the problem is masked because any access to the stack is done through the frame pointer and the stack pointer is restored from the frame pointer when the function returns. This patch writes two nops starting at the address of the "jalr _mcount" instruction whenever tracing is disabled. This means that the "addiu sp,sp.-8" will be converted to a nop along with the "jalr". When disabled, there will be two nops. This is SMP safe because the first time this happens is during ftrace_init() which is before any other processor has been started. Subsequent calls to enable/disable tracing when other CPUs ARE running will still be safe because the enable will only change the first nop to a "jalr" and the disable, while writing 2 nops, will only be changing the "jalr". This patch also stops using stop_machine() to call the tracer enable/disable routines and calls them directly because the routines are SMP safe. When the kernel first boots we have to be able to handle the gcc generated jalr, addui sequence until ftrace_init gets a chance to run and change the sequence. At this point mcount just adjusts the stack and returns. When ftrace_init runs, we convert the jalr/addui to nops. Then whenever tracing is enabled we convert the first nop to a "jalr mcount+8". The mcount+8 entry point skips the stack adjust. [ralf@linux-mips.org: Folded in Steven Rostedt's build fix.] Signed-off-by: Al Cooper <alcooperx@gmail.com> Cc: rostedt@goodmis.org Cc: ddaney.cavm@gmail.com Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/4806/ Patchwork: https://patchwork.linux-mips.org/patch/4841/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Alasdair G Kergon authored
When processing write same requests, fix dm to send the configured number of WRITE SAME requests to the target rather than the number of discards, which is not always the same. Device-mapper WRITE SAME support was introduced by commit 23508a96 ("dm: add WRITE SAME support"). Signed-off-by: Alasdair G Kergon <agk@redhat.com> Acked-by: Mike Snitzer <snitzer@redhat.com>
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Steven Rostedt authored
Commit d3ce8843 "MIPS: Fix modpost error in modules attepting to use virt_addr_valid()" moved __virt_addr_valid() from a macro in a header file to a function in ioremap.c. But ioremap.c is only compiled for MIPS 32, and not for MIPS 64. When compiling for my yeeloong2, which supposedly supports hibernation, which compiles kernel/power/snapshot.c which calls virt_addr_valid(), I got this error: LD init/built-in.o kernel/built-in.o: In function `memory_bm_free': snapshot.c:(.text+0x4c9c4): undefined reference to `__virt_addr_valid' snapshot.c:(.text+0x4ca58): undefined reference to `__virt_addr_valid' kernel/built-in.o: In function `snapshot_write_next': (.text+0x4e44c): undefined reference to `__virt_addr_valid' kernel/built-in.o: In function `snapshot_write_next': (.text+0x4e890): undefined reference to `__virt_addr_valid' make[1]: *** [vmlinux] Error 1 make: *** [sub-make] Error 2 I suspect that __virt_addr_valid() is fine for mips 64. I moved it to mmap.c such that it gets compiled for mips 64 and 32. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4842/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Mike Snitzer authored
thin_io_hints() is blindly copying the queue limits from the thin-pool which can lead to incorrect limits being set. The fix here simply deletes the thin_io_hints() hook which leaves the existing stacking infrastructure to set the limits correctly. When a thin-pool uses an MD device for the data device a thin device from the thin-pool must respect MD's constraints about disallowing a bio from spanning multiple chunks. Otherwise we can see problems. If the raid0 chunksize is 1152K and thin-pool chunksize is 256K I see the following md/raid0 error (with extra debug tracing added to thin_endio) when mkfs.xfs is executed against the thin device: md/raid0:md99: make_request bug: can't convert block across chunks or bigger than 1152k 6688 127 device-mapper: thin: bio sector=2080 err=-5 bi_size=130560 bi_rw=17 bi_vcnt=32 bi_idx=0 This extra DM debugging shows that the failing bio is spanning across the first and second logical 1152K chunk (sector 2080 + 255 takes the bio beyond the first chunk's boundary of sector 2304). So the bio splitting that DM is doing clearly isn't respecting the MD limits. max_hw_sectors_kb is 127 for both the thin-pool and thin device (queue_max_hw_sectors returns 255 so we'll excuse sysfs's lack of precision). So this explains why bi_size is 130560. But the thin device's max_hw_sectors_kb should be 4 (PAGE_SIZE) given that it doesn't have a .merge function (for bio_add_page to consult indirectly via dm_merge_bvec) yet the thin-pool does sit above an MD device that has a compulsory merge_bvec_fn. This scenario is exactly why DM must resort to sending single PAGE_SIZE bios to the underlying layer. Some additional context for this is available in the header for commit 8cbeb67a ("dm: avoid unsupported spanning of md stripe boundaries"). Long story short, the reason a thin device doesn't properly get configured to have a max_hw_sectors_kb of 4 (PAGE_SIZE) is that thin_io_hints() is blindly copying the queue limits from the thin-pool device directly to the thin device's queue limits. Fix this by eliminating thin_io_hints. Doing so is safe because the block layer's queue limits stacking already enables the upper level thin device to inherit the thin-pool device's discard and minimum_io_size and optimal_io_size limits that get set in pool_io_hints. But avoiding the queue limits copy allows the thin and thin-pool limits to be different where it is important, namely max_hw_sectors_kb. Reported-by: Daniel Browning <db@kavod.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 EFI fixes from Peter Anvin: "This is a collection of fixes for the EFI support. The controversial bit here is a set of patches which bumps the boot protocol version as part of fixing some serious problems with the EFI handover protocol, used when booting under EFI using a bootloader as opposed to directly from EFI. These changes should also make it a lot saner to support cross-mode 32/64-bit EFI booting in the future. Getting these changes into 3.8 means we avoid presenting an inconsistent ABI to bootloaders. Other changes are display detection and fixing efivarfs." * 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, efi: remove attribute check from setup_efi_pci x86, build: Dynamically find entry points in compressed startup code x86, efi: Fix PCI ROM handing in EFI boot stub, in 32-bit mode x86, efi: Fix 32-bit EFI handover protocol entry point x86, efi: Fix display detection in EFI boot stub x86, boot: Define the 2.12 bzImage boot protocol x86/boot: Fix minor fd leakage in tools/relocs.c x86, efi: Set runtime_version to the EFI spec revision x86, efi: fix 32-bit warnings in setup_efi_pci() efivarfs: Delete dentry from dcache in efivarfs_file_write() efivarfs: Never return ENOENT from firmware efi, x86: Pass a proper identity mapping in efi_call_phys_prelog efivarfs: Drop link count of the right inode
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Peter Anvin: "This is a collection of miscellaneous fixes, the most important one is the fix for the Samsung laptop bricking issue (auto-blacklisting the samsung-laptop driver); the efi_enabled() changes you see below are prerequisites for that fix. The other issues fixed are booting on OLPC XO-1.5, an UV fix, NMI debugging, and requiring CAP_SYS_RAWIO for MSR references, just as with I/O port references." * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: samsung-laptop: Disable on EFI hardware efi: Make 'efi_enabled' a function to query EFI facilities smp: Fix SMP function call empty cpu mask race x86/msr: Add capabilities check x86/dma-debug: Bump PREALLOC_DMA_DEBUG_ENTRIES x86/olpc: Fix olpc-xo1-sci.c build errors arch/x86/platform/uv: Fix incorrect tlb flush all issue x86-64: Fix unwind annotations in recent NMI changes x86-32: Start out cr0 clean, disable paging before modifying cr3/4
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull console lockdep checking revert from Dave Airlie. The lockdep splat this showed was interesting, but it's very very old, and we won't be fixing it until 3.9. In the meantime, undo the lockdep annotation so that we don't generate the (known) console lockdep issue, and then possibly hide any potential other (unknown) lockdep problems that got disabled by the first one that triggered. * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: Revert "console: implement lockdep support for console_lock"
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Dave Airlie authored
This reverts commit daee7797. I'll requeue this after the console locking fixes, so lockdep is useful again for people until fbcon is fixed. Signed-off-by: Dave Airlie <airlied@redhat.com>
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- 30 Jan, 2013 18 commits
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Trond Myklebust authored
NFS4ERR_DELAY is a legal reply when we call DESTROY_SESSION. It usually means that the server is busy handling an unfinished RPC request. Just sleep for a second and then retry. We also need to be able to handle the NFS4ERR_BACK_CHAN_BUSY return value. If the NFS server has outstanding callbacks, we just want to similarly sleep & retry. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
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Trond Myklebust authored
This fixes a livelock in the xprt->sending queue where we end up never making progress on lower priority tasks because sleep_on_priority() keeps adding new tasks with the same owner to the head of the queue, and priority bumps mean that we keep resetting the queue->owner to whatever task is at the head of the queue. Regression introduced by commit c05eecf6 (SUNRPC: Don't allow low priority tasks to pre-empt higher priority ones). Reported-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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H. Peter Anvin authored
Various urgent EFI fixes and some warning cleanups for v3.8 * EFI boot stub fix for Macbook Pro's from Maarten Lankhorst * Fix an oops in efivarfs from Lingzhu Xiang * 32-bit warning cleanups from Jan Beulich * Patch to Boot on >512GB RAM systems from Nathan Zimmer * Set efi.runtime_version correctly * efivarfs updates Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Trond Myklebust authored
Ensure that any setattr and getattr requests for junctions and/or mountpoints are sent to the server. Ever since commit 0ec26fd0 (vfs: automount should ignore LOOKUP_FOLLOW), we have silently dropped any setattr requests to a server-side mountpoint. For referrals, we have silently dropped both getattr and setattr requests. This patch restores the original behaviour for setattr on mountpoints, and tries to do the same for referrals, provided that we have a filehandle... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
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Jayachandran C authored
The commit 2a37b1ae "MIPS: Netlogic: Move from u32 cpumask to cpumask_t" breaks uniprocessor compilation on XLR with: arch/mips/netlogic/xlr/setup.c: In function 'prom_init': arch/mips/netlogic/xlr/setup.c:196:6: error: unused variable 'i' Fix by defining 'i' only when CONFIG_SMP is defined. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/4760/Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Gabor Juhos authored
The base address of the PCI memory is 0x10000000 and the base address of the PCI configuration space is 0x17000000 on the AR71xx SoCs. The AR71XX_PCI_MEM_SIZE is defined as 0x08000000 which is wrong because that overlaps with the configuration space. This patch fixes the value of the AR71XX_PCI_MEM_SIZE constant, in order to avoid this resource conflicts. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4873/Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Gabor Juhos authored
The base address of the PCI memory is 0x10000000 and the base address of the PCI configuration space is 0x14000000 on the AR724x SoCs. The AR724X_PCI_MEM_SIZE is defined as 0x08000000 which is wrong because that overlaps with the configuration space. The patch fixes the value of the AR724X_PCI_MEM_SIZE constant, in order to avoid this resource conflicts. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4872/Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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John Crispin authored
The introduction of the OF support broke the cp0_perfcount_irq mapping. This resulted in oprofile not working anymore. Offending commit is : commit 3645da02 Author: John Crispin <blogic@openwrt.org> Date: Tue Apr 17 10:18:32 2012 +0200 OF: MIPS: lantiq: implement irq_domain support Signed-off-by: Conor O'Gorman <i@conorogorman.net> Signed-off-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4875/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Matt Fleming authored
It has been reported that running this driver on some Samsung laptops with EFI can cause those machines to become bricked as detailed in the following report, https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557 There have also been reports of this driver causing Machine Check Exceptions on recent EFI-enabled Samsung laptops, https://bugzilla.kernel.org/show_bug.cgi?id=47121 So disable it if booting from EFI since this driver relies on grovelling around in the BIOS memory map which isn't going to work. Cc: Corentin Chary <corentincj@iksaif.net> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Colin Ian King <colin.king@canonical.com> Cc: Steve Langasek <steve.langasek@canonical.com> Cc: <stable@vger.kernel.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Matt Fleming authored
Originally 'efi_enabled' indicated whether a kernel was booted from EFI firmware. Over time its semantics have changed, and it now indicates whether or not we are booted on an EFI machine with bit-native firmware, e.g. 64-bit kernel with 64-bit firmware. The immediate motivation for this patch is the bug report at, https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557 which details how running a platform driver on an EFI machine that is designed to run under BIOS can cause the machine to become bricked. Also, the following report, https://bugzilla.kernel.org/show_bug.cgi?id=47121 details how running said driver can also cause Machine Check Exceptions. Drivers need a new means of detecting whether they're running on an EFI machine, as sadly the expression, if (!efi_enabled) hasn't been a sufficient condition for quite some time. Users actually want to query 'efi_enabled' for different reasons - what they really want access to is the list of available EFI facilities. For instance, the x86 reboot code needs to know whether it can invoke the ResetSystem() function provided by the EFI runtime services, while the ACPI OSL code wants to know whether the EFI config tables were mapped successfully. There are also checks in some of the platform driver code to simply see if they're running on an EFI machine (which would make it a bad idea to do BIOS-y things). This patch is a prereq for the samsung-laptop fix patch. Cc: David Airlie <airlied@linux.ie> Cc: Corentin Chary <corentincj@iksaif.net> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Olof Johansson <olof@lixom.net> Cc: Peter Jones <pjones@redhat.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: Steve Langasek <steve.langasek@canonical.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Konrad Rzeszutek Wilk <konrad@kernel.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: <stable@vger.kernel.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds authored
Pull EDAC fixlets from Borislav Petkov: "Two minor correctness fixlets from Dan Carpenter and Joe Perches each." * tag 'edac_for_3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: EDAC: Fix kcalloc argument order EDAC: Test correct variable in ->store function
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: - A collection of small ASoC driver fixes (error path fixes, register correction, regulator bypass mode fix, etc) - A few regression fixes and quirks of HD-audio (wrong page attributes for SG-buffer, Poulsbo/Oaktrail controller fix, digital mic fix for Acer, etc) - A fix for USB-audio UAC2 devices wrt FU length check * tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Fix non-snoop page handling ALSA: hda - Enable LPIB delay count for Poulsbo / Oaktrail ALSA: hda - fix inverted internal mic on Acer AOA150/ZG5 ALSA: usb-audio: fix invalid length check for RME and other UAC 2 devices ALSA: hda - Add a fixup for Packard-Bell desktop with ALC880 ASoC: wm_adsp: Release firmware on error ASoC: wm_adsp: Use GFP_DMA for things that may be DMAed ASoC: arizona: Use actual rather than desired BCLK when calculating LRCLK ASoC: wm2200: correct mixer values and text ASoC: MAINTAINERS: Update email address. ASoC: wm5110: Correct AEC loopback mask ASoC: wm5102: Correct AEC loopback mask ASoC: dapm: Fix sense of regulator bypass mode ASoC: fsl: fix multiple definition of init_module ASoC: arizona: Disable free-running mode on FLL1
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Joe Perches authored
First number, then size. Signed-off-by: Joe Perches <joe@perches.com> Cc: <stable@vger.kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de>
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Dan Carpenter authored
We're testing for ->show but calling ->store(). Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: Borislav Petkov <bp@suse.de>
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Intel, radeon and exynos fixes. Nothing too major or wierd: one dmar fix and a radeon cursor corruption, along with misc exynos fixes." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (21 commits) drm/exynos: add check for the device power status drm/exynos: Make 'drm_hdmi_get_edid' static drm/exynos: fimd and ipp are broken on multiplatform drm/exynos: don't include plat/gpio-cfg.h drm/exynos: Remove "internal" interrupt handling drm/exynos: Add missing static specifiers in exynos_drm_rotator.c drm/exynos: Replace mdelay with usleep_range drm/exynos: Make ipp_handle_cmd_work static drm/exynos: Make g2d_userptr_get_dma_addr static drm/exynos: consider DMA_NONE flag to dmabuf import drm/exynos: free sg object if dma_map_sg is failed drm/exynos: added validation of edid for vidi connection drm/exynos: let drm handle edid allocations drm/radeon: Enable DMA_IB_SWAP_ENABLE on big endian hosts. drm/radeon: fix a rare case of double kfree radeon_display: Use pointer return error codes drm/radeon: fix cursor corruption on DCE6 and newer drm/i915: dump UTS_RELEASE into the error_state iommu/intel: disable DMAR for g4x integrated gfx drm/i915: GFX_MODE Flush TLB Invalidate Mode must be '1' for scanline waits ...
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git://oss.sgi.com/xfs/xfsLinus Torvalds authored
Pull xfs bugfixes from Ben Myers: "Here are fixes for returning EFSCORRUPTED on probe of a non-xfs filesystem, the stack switch in xfs_bmapi_allocate, a crash in _xfs_buf_find, speculative preallocation as the filesystem nears ENOSPC, an unmount hang, a race with AIO, and a regression with xfs_fsr: - fix return value when filesystem probe finds no XFS magic, a regression introduced in 98021821. - fix stack switch in __xfs_bmapi_allocate by moving the check for stack switch up into xfs_bmapi_write. - fix oops in _xfs_buf_find by validating that the requested block is within the filesystem bounds. - limit speculative preallocation near ENOSPC. - fix an unmount hang in xfs_wait_buftarg by freeing the xfs_buf_log_item in xfs_buf_item_unlock. - fix a possible use after free with AIO. - fix xfs_swap_extents after removal of xfs_flushinval_pages, a regression introduced in commit fb595814." * tag 'for-linus-v3.8-rc6' of git://oss.sgi.com/xfs/xfs: xfs: Fix xfs_swap_extents() after removal of xfs_flushinval_pages() xfs: Fix possible use-after-free with AIO xfs: fix shutdown hang on invalid inode during create xfs: limit speculative prealloc near ENOSPC thresholds xfs: fix _xfs_buf_find oops on blocks beyond the filesystem end xfs: pull up stack_switch check into xfs_bmapi_write xfs: Do not return EFSCORRUPTED when filesystem probe finds no XFS magic
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull one s390 fix from Martin Schwidefsky: "Another transparent huge page fix, we need to define a s390 variant for pmdp_set_wrprotect to flush the TLB for the huge page correctly." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/thp: implement pmdp_set_wrprotect()
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds authored
Pull pinctrl fixes from Linus Walleij: "This is a late pinctrl fix pull request, we had to revert out the pinctrl-single GPIO backend, because of, well, design issues. We're cooking a better thing for the next cycle. - Revert gpio request/free backend, new patch set in the works, will be for v3.9. Get this old cruft out before anyone hurts himself on it. - Kconfig buzz - Various compile warnings - MPP6 value for the Kirkwood" * tag 'pinctrl-fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: nomadik: nmk_prcm_gpiocr_get_mode may be unused pinctrl: exynos: don't mark probing functions as __init Revert "pinctrl: single: support gpio request and free" pinctrl: mvebu: fix MPP6 value for kirkwood driver pinctrl: mvebu: Fix compiler warnings pinctrl: pinctrl-mxs: Fix variables' definition type pinctrl: samsung: removing duplicated condition for PINCTRL_SAMSUNG
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