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2013-08-07drm/mgag200: Invalidate page tables when pinning a BOEgbert Eich1-0/+1
When a BO gets pinned the placement may get changed. If the memory is mapped into user space and user space has already accessed the mapped range the page tables are set up but now point to the wrong memory. Set bo.mdev->dev_mapping in mgag200_bo_create() to make sure that ttm_bo_unmap_virtual() called from ttm_bo_handle_move_mem() will take care of this. v2: Don't call ttm_bo_unmap_virtual() in mgag200_bo_pin(), fix comment. Signed-off-by: Egbert Eich <eich@suse.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-08-07drm/cirrus: Invalidate page tables when pinning a BOMichal Srb1-0/+1
This is a cirrus version of Egbert Eich's patch for mgag200. Without bo.bdev->dev_mapping set, the ttm_bo_unmap_virtual_locked called from ttm_bo_handle_move_mem returns with no effect. If any application accessed the memory before it was moved, it will access wrong memory next time. This causes crashes when changing resolution down. Signed-off-by: Michal Srb <msrb@suse.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-08-07ARM: nomadik: switch to use the Nomadik I2C driverLinus Walleij2-11/+32
Instead of using bit-banged I2C, let's use the actual I2C driver in the kernel. Since the I2C block may be communicating with things like the PMIC, we need to select it from the Kconfig just like the bit-banged adapter is selected today. The rest of the configuration for this driver can be done from the device tree. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07ARM: u8540: DT: Set pinctrl mapping to i2c0,1,2,4 & 5Gabriel Fernandez2-0/+149
This patch configures pin map in device tree of i2c0, 1,2,4 & 5 for ccu8540 board. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07ARM: u8540: Add Pinctrl Device Tree settings for uart0, uart2Gabriel Fernandez4-0/+223
This patch adds pinctrl device tree settings for uart0 and uart2 for ccu8540 board. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07ARM: ux500: Stop passing MMC's platform data for Device Tree bootsLee Jones1-4/+4
It was required to pass DMA channel configuration information to the MMC driver before the new DMA API was in place. Now that it is, and is fully compatible with Device Tree we can stop doing that. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07Documentation: Update binding for Nomadik and DBx5x based platformsLee Jones1-3/+3
Change compatible string to something more standard. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07ARM: ux500: Supply external regulator names for Snowball's DTLee Jones1-0/+14
Regulator names are platform independent, so they need to be applied to the base level platform DTS files *.dts. Here we're supplying the names for the newly described AB8500 external regulators. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07ARM: ux500: Provide a supply name for the AB8500 AUX regulators to useLee Jones1-0/+1
AB8500 AUX regulators are supplied by EXT3 on some boards. This supply phandle lookup will enable the regulator core to search for and locate the EXT3 supply at registration time. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07ARM: ux500: Add Device Tree nodes for AB8500 External regulatorsLee Jones1-0/+27
The AB8500 has 3 external regulators which are used to control outside voltage sources. Some of the core AB8500 use these external regulators as a supply, so they must be obtainable via Device Tree. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07ARM: ux500: Fix trivial whitespace/tabbing issueLee Jones1-1/+1
Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-07Merge branch 'for-3.11-fixes' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata fix from Tejun Heo: "Just the addition of MODULE_DEVICE_TABLE() for a platform driver" * 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: pata_imx: expose module alias for loading from device-tree
2013-08-07Merge branch 'for-3.11-fixes' of ↵Linus Torvalds1-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fix from Tejun Heo: "Fix for a minor memory leak bug in the cgroup init failure path" * 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: fix a leak when percpu_ref_init() fails
2013-08-07Merge branch 'for-3.11-fixes' of ↵Linus Torvalds1-10/+34
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull two workqueue fixes from Tejun Heo: "A lockdep notation update so that nested work_on_cpu() invocations don't lead to spurious lockdep warnings and fix for an unbound attr bug which made what's shown in sysfs deviate from the actual ones. Both patches have pretty limited scope" * 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: copy workqueue_attrs with all fields workqueue: allow work_on_cpu() to be called recursively
2013-08-07Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds4-8/+19
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc x86 fixes from Peter Anvin. * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, amd, microcode: Fix error path in apply_microcode_amd() x86, fpu: correct the asm constraints for fxsave, unbreak mxcsr.daz x86, efi: correct call to free_pages x86/iommu/vt-d: Expand interrupt remapping quirk to cover x58 chipset
2013-08-07printk: Fix return of braille_register_console()Steven Rostedt1-1/+2
Some of my configs I test with have CONFIG_A11Y_BRAILLE_CONSOLE set. When I started testing against v3.11-rc4 my console went bonkers. Using ktest to bisect the issue, it came down to: commit bbeddf52a "printk: move braille console support into separate braille.[ch] files" Looking into the patch I found the problem. It's with the return of braille_register_console(). As anything other than NULL is considered a failure. But for those of us that have CONFIG_A11Y_BRAILLE_CONSOLE set but do not define a "brl" or "brl=" on the command line, we still may want a console that those with sight can still use. Return NULL (success) if "brl" or "brl=" is not on the console line. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Joe Perches <joe@perches.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-07Revert "ptrace: PTRACE_DETACH should do flush_ptrace_hw_breakpoint(child)"Oleg Nesterov1-1/+0
This reverts commit fab840fc2d542fabcab903db8e03589a6702ba5f. This commit even has the test-case to prove that the tracee can be killed by SIGTRAP if the debugger does not remove the breakpoints before PTRACE_DETACH. However, this is exactly what wineserver deliberately does, set_thread_context() calls PTRACE_ATTACH + PTRACE_DETACH just for PTRACE_POKEUSER(DR*) in between. So we should revert this fix and document that PTRACE_DETACH should keep the breakpoints. Reported-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-07Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds4-3/+13
Pull MIPS fixes from Ralf Baechle: "Two platform-specific fixes plus a fix for oprofile which was calling smp_processor_id() in preemptible code" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: BMIPS: fix hardware interrupt routing for boot CPU != 0 MIPS: oprofile: Fix BUG due to smp_processor_id() in preemptible code. MIPS: PNX833x: PNX8335_PCI_ETHERNET_INT depends on CONFIG_SOC_PNX8335
2013-08-07Merge branch 'for-linus' of ↵Linus Torvalds9-12/+31
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Enable LZ4 compression for the kernel image, add the machine id for the new zBC12 model, fix an issue with hanging dasd devices, correct a Kconfig dependency, fix a compile error in the perf module with CONFIG_KVM=n and fix the find_next_bit_left primitive for the PCI base layer" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/dasd: fix hanging devices after path events s390/perf: fix compile error (undefined reference sie_exit) s390/bitops: fix find_next_bit_left s390: add support for IBM zBC12 machine s390/Kconfig: select 'TTY' when 'S390_GUEST' is enabled s390: add support for LZ4-compressed kernel
2013-08-07userns: unshare_userns(&cred) should not populate cred on failureOleg Nesterov1-4/+9
unshare_userns(new_cred) does *new_cred = prepare_creds() before create_user_ns() which can fail. However, the caller expects that it doesn't need to take care of new_cred if unshare_userns() fails. We could change the single caller, sys_unshare(), but I think it would be more clean to avoid the side effects on failure, so with this patch unshare_userns() does put_cred() itself and initializes *new_cred only if create_user_ns() succeeeds. Cc: stable@vger.kernel.org Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-06Merge remote-tracking branch 'regmap/fix/disable' into regmap-linusMark Brown1-0/+1
2013-08-06regmap: Add missing header for !CONFIG_REGMAP stubsMateusz Krawczuk1-0/+1
regmap.h requires linux/err.h if CONFIG_REGMAP is not defined. Without it I get error. CC drivers/media/platform/exynos4-is/fimc-reg.o In file included from drivers/media/platform/exynos4-is/fimc-reg.c:14:0: include/linux/regmap.h: In function ‘regmap_write’: include/linux/regmap.h:525:10: error: ‘EINVAL’ undeclared (first use in this function) include/linux/regmap.h:525:10: note: each undeclared identifier is reported only once for each function it appears in Signed-off-by: Mateusz Krawczuk <m.krawczuk@partner.samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@kernel.org
2013-08-06ARM: dts: Add S5K5BA sensor regulator definitions for Trats boardAndrzej Hajda1-16/+62
Add MAX8998 LDO12 and fixed voltage regulator nodes. While at it, all fixed voltage regulator nodes are grouped in a 'regulators' node. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-06ARM: dts: Add Exynos4210 SoC camera port pinctrl nodesAndrzej Hajda1-0/+23
Add pinctrl nodes for the camera parallel port CAM_A data bus and the CAM_A_CLKOUT clock output pin. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-06ARM: dts: Add FIMC nodes for Exynos4210 Trats boardSylwester Nawrocki1-0/+22
Enable FIMC devices on the Trats board. This allows using the device in memory-to-memory mode only. The camera port pinctrl property is now empty and will be updated while support for the camera sensors is added. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-06ARM: dts: Add camera device nodes for Exynos4210 SoCsSylwester Nawrocki1-0/+30
Add common camera node and detailed properties for the Exynos4210 FIMC devices. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-06ARM: dts: Add SPI1 controller and s5c73m3 sensor node for TRATS2Andrzej Hajda1-0/+16
This patch add dts entries required for the SPI bus used for firware upload by the S5C73M3 camera. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-06ACPI: Drop physical_node_id_bitmap from struct acpi_deviceRafael J. Wysocki2-21/+21
The physical_node_id_bitmap in struct acpi_device is only used for looking up the first currently unused dependent phyiscal node ID by acpi_bind_one(). It is not really necessary, however, because acpi_bind_one() walks the entire physical_node_list of the given device object for sanity checking anyway and if that list is always sorted by node_id, it is straightforward to find the first gap between the currently used node IDs and use that number as the ID of the new list node. This also removes the artificial limit of the maximum number of dependent physical devices per ACPI device object, which now depends only on the capacity of unsigend int. As a result, it fixes a regression introduced by commit e2ff394 (ACPI / memhotplug: Bind removable memory blocks to ACPI device nodes) that caused acpi_memory_enable_device() to fail when the number of 128 MB blocks within one removable memory module was greater than 32. Reported-and-tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
2013-08-06Smack: IPv6 casting error fix for 3.11Casey Schaufler1-13/+11
The original implementation of the Smack IPv6 port based local controls works most of the time using a sockaddr as a temporary variable, but not always as it overflows in some circumstances. The correct data is a sockaddr_in6. A struct sockaddr isn't as large as a struct sockaddr_in6. There would need to be casting one way or the other. This patch gets it the right way. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2013-08-06SUNRPC: Don't auto-disconnect from the local rpcbind socketTrond Myklebust1-0/+8
There is no need for the kernel to time out the AF_LOCAL connection to the rpcbind socket, and doing so is problematic because when it is time to reconnect, our process may no longer be using the same mount namespace. Reported-by: Nix <nix@esperi.org.uk> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: stable@vger.kernel.org # 3.9.x
2013-08-06ACPI / PM: Walk physical_node_list under physical_node_lockRafael J. Wysocki1-0/+8
The list of physical devices corresponding to an ACPI device object is walked by acpi_system_wakeup_device_seq_show() and physical_device_enable_wakeup() without taking that object's physical_node_lock mutex. Since each of those functions may be run at any time as a result of a user space action, the lack of appropriate locking in them may lead to a kernel crash if that happens during device hot-add or hot-remove involving the device object in question. Fix the issue by modifying acpi_system_wakeup_device_seq_show() and physical_device_enable_wakeup() to use physical_node_lock as appropriate. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: All <stable@vger.kernel.org>
2013-08-05LOCKD: Don't call utsname()->nodename from nlmclnt_setlockargsTrond Myklebust2-6/+12
Firstly, nlmclnt_setlockargs can be called from a reclaimer thread, in which case we're in entirely the wrong namespace. Secondly, commit 8aac62706adaaf0fab02c4327761561c8bda9448 (move exit_task_namespaces() outside of exit_notify()) now means that exit_task_work() is called after exit_task_namespaces(), which triggers an Oops when we're freeing up the locks. Fix this by ensuring that we initialise the nlm_host's rpc_client at mount time, so that the cl_nodename field is initialised to the value of utsname()->nodename that the net namespace uses. Then replace the lockd callers of utsname()->nodename. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Toralf Förster <toralf.foerster@gmx.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Nix <nix@esperi.org.uk> Cc: Jeff Layton <jlayton@redhat.com> Cc: stable@vger.kernel.org # 3.10.x
2013-08-05ARM: dts: Add camera device nodes for Exynos4412 TRATS2 boardSylwester Nawrocki1-0/+88
This patch enables the front camera using the internal camera ISP (FIMC-IS). Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05ARM: dts: Add AK8975 device node for Exynos4412 TRATS2 boardJacek Anaszewski1-0/+19
This patch adds AK8975 magnetometer node and corresponding i2c-gpio bus node for TRATS2 board. Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05ARM: dts: Add camera subsystem nodes to exynos4x12.dtsiSylwester Nawrocki1-0/+98
Add common camera node and Exynos4212/4412 specific nodes for FIMC, MIPI-CSIS, FIMC-LITE and FIMC-IS devices. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05ARM: dts: Add camera subsystem device nodes to exynos4.dtsiSylwester Nawrocki1-0/+88
This patch adds common Exynos4 SoC series FIMC and MIPI CSIS device nodes. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05ARM: dts: Use generic DMA bindings for Exynos4 SPI devicesSylwester Nawrocki1-6/+6
The Exynos4 SPI controller has migrated to the generic DMA bindings since commit b5be04d35dbb("spi: s3c64xx: Modify SPI driver to use generic DMA DT support"). Use the generic bindings to specify the corresponding DMA to make the SPI usable again on Exynos4x12 SoCs. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05ARM: dts: Add ISP power domain node for Exynos4x12Sylwester Nawrocki1-0/+5
The ISP power domain is a common power domain for FIMC-LITE and FIMC-IS (camera ISP) devices. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05ARM: dts: Add pinctrl entries for Exynos4x12 FIMC-IS peripheralsSylwester Nawrocki1-0/+21
Add pinctrl nodes for the ISP I2C0, ISP I2C1 and ISP UART devices. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05ARM: dts: Correct camera pinctrl nodes for Exynos4x12 SoCsSylwester Nawrocki1-7/+33
Add separate nodes for the CAMCLK pin and turn off pull-up on camera ports A, B. The video bus pins and the clock output (CAMCLK) pin need separate nodes since full camera port is not used in some configurations, e.g. for MIPI CSI-2 bus only CAMCLK is required and data/clock signal use separate dedicated pins. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-08-05regmap: cache: Make sure to sync the last register in a blockLars-Peter Clausen1-1/+2
regcache_sync_block_raw_flush() expects the address of the register after last register that needs to be synced as its parameter. But the last call to regcache_sync_block_raw_flush() in regcache_sync_block_raw() passes the address of the last register in the block. This effectively always skips over the last register in a block, even if it needs to be synced. In order to fix it increase the address by one register. The issue was introduced in commit 75a5f89 ("regmap: cache: Write consecutive registers in a single block write"). Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-05vfs: add missing check for __O_TMPFILE in fcntl_init()Zheng Liu1-2/+2
As comment in include/uapi/asm-generic/fcntl.h described, when introducing new O_* bits, we need to check its uniqueness in fcntl_init(). But __O_TMPFILE bit is missing. So fix it. Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-08-05fs: Allow unprivileged linkat(..., AT_EMPTY_PATH) aka flinkAndy Lutomirski1-7/+3
Every now and then someone proposes a new flink syscall, and this spawns a long discussion of whether it would be a security problem. I think that this is missing the point: flink is *already* allowed without privilege as long as /proc is mounted -- it's called AT_SYMLINK_FOLLOW. Now that O_TMPFILE is here, the ability to create a file with O_TMPFILE, write it, and link it in is very convenient. The only problem is that it requires that /proc be mounted so that you can do: linkat(AT_FDCWD, "/proc/self/fd/<tmpfd>", dfd, path, AT_SYMLINK_NOFOLLOW) This sucks -- it's much nicer to do: linkat(tmpfd, "", dfd, path, AT_EMPTY_PATH) Let's allow it. If this turns out to be excessively scary, it we could instead require that the inode in question be I_LINKABLE, but this seems pointless given the /proc situation Signed-off-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-08-05fs: Fix file mode for O_TMPFILEAndy Lutomirski1-1/+1
O_TMPFILE, like O_CREAT, should respect the requested mode and should create regular files. This fixes two bugs: O_TMPFILE required privilege (because the mode ended up as 000) and it produced bogus inodes with no type. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-08-05reiserfs: fix deadlock in umountAl Viro2-82/+20
Since remove_proc_entry() started to wait for IO in progress (i.e. since 2007 or so), the locking in fs/reiserfs/proc.c became wrong; if procfs read happens between the moment when umount() locks the victim superblock and removal of /proc/fs/reiserfs/<device>/*, we'll get a deadlock - read will wait for s_umount (in sget(), called by r_start()), while umount will wait in remove_proc_entry() for that read to finish, holding s_umount all along. Fortunately, the same change allows a much simpler race avoidance - all we need to do is remove the procfs entries in the very beginning of reiserfs ->kill_sb(); that'll guarantee that pointer to superblock will remain valid for the duration for procfs IO, so we don't need sget() to keep the sucker alive. As the matter of fact, we can get rid of the home-grown iterator completely, and use single_open() instead. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-08-05MIPS: BMIPS: fix hardware interrupt routing for boot CPU != 0Florian Fainelli1-2/+8
The hardware interrupt routing for boot CPU != 0 is wrong because it will route all the hardware interrupts to TP0 which is not the one we booted from. Fix this by properly checking which boot CPU we are booting from and updating the right interrupt mask for the boot CPU. This fixes booting on BCM3368 with bmips_smp_emabled = 0. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: blogic@openwrt.org Cc: jogo@openwrt.org Cc: cernekee@gmail.com Patchwork: https://patchwork.linux-mips.org/patch/5650/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-05MIPS: oprofile: Fix BUG due to smp_processor_id() in preemptible code.Ralf Baechle2-1/+3
current_cpu_type() is not preemption-safe. If CONFIG_PREEMPT is enabled then mipsxx_reg_setup() can be called from preemptible state. Added get_cpu()/put_cpu() pair to make it preemption-safe. This was found while testing oprofile with CONFIG_DEBUG_PREEMPT enable. /usr/zntestsuite # opcontrol --init /usr/zntestsuite # opcontrol --setup --event=L2_CACHE_ACCESSES:500 --event=L2_CACHE_MISSES:500 --no-vmlinux /usr/zntestsuite # opcontrol --start Using 2.6+ OProfile kernel interface. BUG: using smp_processor_id() in preemptible [00000000] code: oprofiled/1362 caller is mipsxx_reg_setup+0x11c/0x164 CPU: 0 PID: 1362 Comm: oprofiled Not tainted 3.10.4 #18 Stack : 00000006 70757465 00000000 00000000 00000000 00000000 80b173f6 00000037 80b10000 00000000 80b21614 88f5a220 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 89c49c00 89c49c2c 80721254 807b7927 8012c1d0 80b10000 80721254 00000000 00000552 88f5a220 80b1335c 807b78e6 89c49ba8 ... Call Trace: [<801099a4>] show_stack+0x64/0x7c [<80665520>] dump_stack+0x20/0x2c [<803a2250>] debug_smp_processor_id+0xe0/0xf0 [<8052df24>] mipsxx_reg_setup+0x11c/0x164 [<8052cd70>] op_mips_setup+0x24/0x4c [<80529cfc>] oprofile_setup+0x5c/0x12c [<8052b9f8>] event_buffer_open+0x78/0xf8 [<801c3150>] do_dentry_open.isra.15+0x2b8/0x3b0 [<801c3270>] finish_open+0x28/0x4c [<801d49b8>] do_last.isra.41+0x2cc/0xd00 [<801d54a0>] path_openat+0xb4/0x4c4 [<801d5c44>] do_filp_open+0x3c/0xac [<801c4744>] do_sys_open+0x110/0x1f4 [<8010f47c>] stack_done+0x20/0x44 Bug reported and original patch by Jerin Jacob <jerinjacobk@gmail.com>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Jerin Jacob <jerinjacobk@gmail.com>
2013-08-05MIPS: PNX833x: PNX8335_PCI_ETHERNET_INT depends on CONFIG_SOC_PNX8335Markos Chandras1-0/+2
The PNX8335_PCI_ETHERNET_INT macro is defined in arch/mips/include/asm/mach-pnx833x/irq-mapping.h only if CONFIG_SOC_PNX8335 is selected. Fixes the following randconfig problem: arch/mips/pnx833x/common/platform.c:210:12: error: 'PNX8335_PIC_ETHERNET_INT' undeclared here (not in a function) Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Acked-by: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5585/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-05i2c: Fix Kontron PLD prescaler calculationMichael Brunner1-2/+2
Add some necessary braces that have been removed during driver cleanup. This fixes the I2C prescaler calculation. Signed-off-by: Michael Brunner <michael.brunner@kontron.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-08-05i2c: i2c-mxs: Use DMA mode even for small transfersFabio Estevam1-1/+1
Recently we have been seing some reports about PIO mode not working properly. - http://www.spinics.net/lists/linux-i2c/msg11985.html - http://marc.info/?l=linux-i2c&m=137235593101385&w=2 - https://lkml.org/lkml/2013/6/24/430 Let's use DMA mode even for small transfers. Without this patch, i2c reads the incorrect sgtl5000 version on a mx28evk when touchscreen is enabled: [ 5.856270] sgtl5000 0-000a: Device with ID register 0 is not a sgtl5000 [ 9.877307] sgtl5000 0-000a: ASoC: failed to probe CODEC -19 [ 9.883528] mxs-sgtl5000 sound.12: ASoC: failed to instantiate card -19 [ 9.892955] mxs-sgtl5000 sound.12: snd_soc_register_card failed (-19) Cc: <stable@vger.kernel.org> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Marek Vasut <marex@denx.de> [wsa: we have a proper solution for -next, so this non intrusive solution is OK for now] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>