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2011-07-21ARM: CPU hotplug: ensure we migrate all IRQs off a downed CPURussell King
Our selection of interrupts to consider for IRQ migration is sub- standard. We were potentially including per-CPU interrupts in our migration strategy, but omitting chained interrupts. This caused some interrupts to remain on a downed CPU. We were also trying to migrate interrupts which were not migratable, resulting in an OOPS. Instead, iterate over all interrupts, skipping per-CPU interrupts or interrupts whose affinity does not include the downed CPU, and attempt to set the affinity for every one else if their chip implements irq_set_affinity(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-21ARM: CPU hotplug: pass in proper affinity mask on IRQ migrationRussell King
Now that the GIC takes care of selecting a target interrupt from the affinity mask, we don't need all this complexity in the core code anymore. Just detect when we need to break affinity. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-21ARM: GIC: avoid routing interrupts to offline CPUsRussell King
The irq_set_affinity() method can be called with masks which include offline CPUs. This allows offline CPUs to have interrupts routed to them by writing to /proc/irq/*/smp_affinity after hotplug has taken a CPU offline. Fix this by ensuring that we select a target CPU present in both the required affinity and the online CPU mask. Ensure that we return IRQ_SET_MASK_OK (which happens to be 0) on success to ensure generic code copies the new mask into the irq_data structure. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-21ARM: CPU hotplug: fix abuse of irqdesc->nodeRussell King
irqdesc's node member is supposed to mark the numa node number for the interrupt. Our use of it is non-standard. Remove this, replacing the functionality with a test of the affinity mask. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-21treewide: fix potentially dangerous trailing ';' in #defined values/expressionsPhil Carmody
All these are instances of #define NAME value; or #define NAME(params_opt) value; These of course fail to build when used in contexts like if(foo $OP NAME) while(bar $OP NAME) and may silently generate the wrong code in contexts such as foo = NAME + 1; /* foo = value; + 1; */ bar = NAME - 1; /* bar = value; - 1; */ baz = NAME & quux; /* baz = value; & quux; */ Reported on comp.lang.c, Message-ID: <ab0d55fe-25e5-482b-811e-c475aa6065c3@c29g2000yqd.googlegroups.com> Initial analysis of the dangers provided by Keith Thompson in that thread. There are many more instances of more complicated macros having unnecessary trailing semicolons, but this pile seems to be all of the cases of simple values suffering from the problem. (Thus things that are likely to be found in one of the contexts above, more complicated ones aren't.) Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-21kexec, x86: Fix incorrect jump back address if not preserving contextHuang Ying
In kexec jump support, jump back address passed to the kexeced kernel via function calling ABI, that is, the function call return address is the jump back entry. Furthermore, jump back entry == 0 should be used to signal that the jump back or preserve context is not enabled in the original kernel. But in the current implementation the stack position used for function call return address is not cleared context preservation is disabled. The patch fixes this bug. Reported-and-tested-by: Yin Kangkai <kangkai.yin@intel.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/1310607277-25029-1-git-send-email-ying.huang@intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21x86, config: Introduce an INTEL_MID configurationAlan Cox
We need to carve up the configuration between: - MID general - Moorestown specific - Medfield specific - Future devices As a base point create an INTEL_MID configuration property. We make the existing MRST configuration a sub-option. This means that the rest of the kernel config can still use X86_MRST checks without anything going backwards. After this is merged future patches will tidy up which devices are MID and which are X86_MRST, as well as add options for Medfield. Signed-off-by: Alan Cox <alan@linux.intel.com> Link: http://lkml.kernel.org/r/20110712164859.7642.84136.stgit@bob.linux.org.uk Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21ARM: S5P64X0: External Interrupt SupportPadmavathi Venna
Add external interrupt support for S5P64X0.The external interrupt group 0(0 to 15) is used for wake-up source in stop and sleep mode. Add generic irq chip support Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Enable MFC on Samsung NURIMarek Szyprowski
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Enable MFC on universal_c210Kamil Debski
Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: S5PV210: Enable MFC on GoniKamil Debski
Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: S5P: Add support for MFC deviceKamil Debski
Add support for MFC device to plat-s5p, mach-exynos4, mach-s5pv210: - clock support - memory mapping and reserving - s5p_device_mfc platform device Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Add support FIMD on SMDKC210Jingoo Han
This patch adds support EXYNOS4 FIMD0 and LTE480WV LCD pannel on Samsung SMDKC210 board. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Jonghun Han <jonghun.han@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Add platform device and helper functions for FIMDJonghun Han
This patch adds platform device s5p_device_fimd0 for EXYNOS4 FIMD0. EXYNOS4 has two FIMDs(FIMD0, FIMD1). FIMD1 will be added later. Some definitions used to enable EXYNOS4 FIMD0 are added. Signed-off-by: Jonghun Han <jonghun.han@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Add resource definition for FIMDJonghun Han
This patch adds resource definitions for EXYNOS4 FIMD. IRQ and SFR definitions are added. Signed-off-by: Jonghun Han <jonghun.han@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Change devname for FIMD clkdevJingoo Han
According to SoC name, EXYNOS4, this patch changes devname for FIMD from 's5pv310-fb' to 'exynos4-fb'. Signed-off-by: Jingoo Han <jg1.han@samsung.com> [kgene.kim@samsung.com: removed to change wrong clock name] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21Merge branch 'next-samsung-clkdev-fix' into next-samsung-develKukjin Kim
2011-07-21ARM: SAMSUNG: Add IRQ_I2S0 definitionSangbeom Kim
To handle i2s0 interrupt and To fix compilation error adds IRQ_I2S0 for exynos4, s3c64xx, s5p64x0 Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> [kgene.kim@samsung.com: Fixed build failure due to inclusion] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21x86, quirks: Use pci_dev->revisionSergei Shtylyov
This code uses PCI_CLASS_REVISION instead of PCI_REVISION_ID, so it wasn't converted by commit 44c10138fd4bbc ("PCI: Change all drivers to use pci_device->revision") before being moved to arch/x86/... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Dave Jones <davej@redhat.com> Link: http://lkml.kernel.org/r/201107111901.39281.sshtylyov@ru.mvista.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21x86, smpboot: Mark the names[] array in __inquire_remote_apic() as constGreg Dietsche
This array is read-only. Make it explicit by marking as const. Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Link: http://lkml.kernel.org/r/1309482653-23648-1-git-send-email-Gregory.Dietsche@cuw.edu Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21x86: Serialize EFI time accesses on rtc_lockJan Beulich
The EFI specification requires that callers of the time related runtime functions serialize with other CMOS accesses in the kernel, as the EFI time functions may choose to also use the legacy CMOS RTC. Besides fixing a latent bug, this is a prerequisite to safely enable the rtc-efi driver for x86, which ought to be preferred over rtc-cmos on all EFI platforms. Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Matthew Garrett <mjg59@srcf.ucam.org> Cc: <mjg@redhat.com> Link: http://lkml.kernel.org/r/4E257E33020000780004E319@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Matthew Garrett <mjg@redhat.com>
2011-07-21x86: Serialize SMP bootup CMOS accesses on rtc_lockJan Beulich
With CPU hotplug, there is a theoretical race between other CMOS (namely RTC) accesses and those done in the SMP secondary processor bringup path. I am unware of the problem having been noticed by anyone in practice, but it would very likely be rather spurious and very hard to reproduce. So to be on the safe side, acquire rtc_lock around those accesses. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/4E257AE7020000780004E2FF@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21ARM: EXYNOS4: Change devname for FIMD clkdevJingoo Han
According to SoC name, EXYNOS4, this patch changes devname for FIMD from 's5pv310-fb' to 'exynos4-fb'. Signed-off-by: Jingoo Han <jg1.han@samsung.com> [kgene.kim@samsung.com: removed to change wrong clock name] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21x86: Fix write lock scalability 64-bit issueJan Beulich
With the write lock path simply subtracting RW_LOCK_BIAS there is, on large systems, the theoretical possibility of overflowing the 32-bit value that was used so far (namely if 128 or more CPUs manage to do the subtraction, but don't get to do the inverse addition in the failure path quickly enough). A first measure is to modify RW_LOCK_BIAS itself - with the new value chosen, it is good for up to 2048 CPUs each allowed to nest over 2048 times on the read path without causing an issue. Quite possibly it would even be sufficient to adjust the bias a little further, assuming that allowing for significantly less nesting would suffice. However, as the original value chosen allowed for even more nesting levels, to support more than 2048 CPUs (possible currently only for 64-bit kernels) the lock itself gets widened to 64 bits. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/4E258E0D020000780004E3F0@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21x86: Unify rwsem assembly implementationJan Beulich
Rather than having two functionally identical implementations for 32- and 64-bit configurations, use the previously extended assembly abstractions to fold the rwsem two implementations into a shared one. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/4E258DF3020000780004E3ED@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21x86: Unify rwlock assembly implementationJan Beulich
Rather than having two functionally identical implementations for 32- and 64-bit configurations, extend the existing assembly abstractions enough to fold the two rwlock implementations into a shared one. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/4E258DD7020000780004E3EA@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-21ARM: SAMSUNG: Add platform device for idmaSangbeom Kim
Exynos4 and S5PC110(S5PV210) has Internal dma(idma) in AUDSS. To support idma, register idma platform device. and Exynos4 and S5PC110 has different IDMA address. TO handle different IDMA address, register idma platform data Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Add more registers to be saved and restored for PMMyungJoo Ham
We need more registers to be saved and restored for PM of EXYNOS4210. Otherwise, with additional drivers running, suspend-to-RAM fails to wake up properly. This patch adds registers omitted in the initial PM patches. Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-21ARM: EXYNOS4: Add more register addresses of CMUMyungJoo Ham
These registers are crucial for PM to work properly. Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-20fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlersJosef Bacik
Btrfs needs to be able to control how filemap_write_and_wait_range() is called in fsync to make it less of a painful operation, so push down taking i_mutex and the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some file systems can drop taking the i_mutex altogether it seems, like ext3 and ocfs2. For correctness sake I just pushed everything down in all cases to make sure that we keep the current behavior the same for everybody, and then each individual fs maintainer can make up their mind about what to do from there. Thanks, Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20arm: don't create useless copies to pass into debugfs_create_dir()Al Viro
its first argument is const char * and it's really not modified... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20switch assorted clock drivers to debugfs_remove_recursive()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86. reboot: Make Dell Latitude E6320 use reboot=pci x86, doc only: Correct real-mode kernel header offset for init_size x86: Disable AMD_NUMA for 32bit for now
2011-07-20MIPS: Lantiq: Add missing clk_enable and clk_disable functions.John Crispin
Signed-of-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2465/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: AR7: Fix trailing semicolon bug in clock.cFlorian Fainelli
Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2489/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: BCM63xx: Remove duplicate PERF_IRQSTAT_REG definitionJonas Gorski
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Cc: linux-mips@linux-mips.org Acked-by: Florian Fainelli <florian@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/2461/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: Netlogic: SMP fixes for XLR/XLS platform code.Jayachandran C
Fix few issues in the Netlogic code: - Use handle_percpu_irq to handle per-cpu interrupts - Remove unused function nlm_common_ipi_handler() - Call scheduler_ipi() on SMP_RESCHEDULE_YOURSELF - Enable interrupts in nlm_smp_finish() Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2460/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: SB1250: Restore dropped irq_mask functionThomas Gleixner
Commit d6d5d5c4a (MIPS: Sibyte: Convert to new irq_chip functions) removed the mask function which breaks irq_shutdown(). Restore it. Reported-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2460/ Tested-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: MIPSsim: Fix uniprocessor build.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: ARC: Fix build of firmware library on uniprocessor.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: XLR, XLS: Move makefile bits to were they belong.Ralf Baechle
This patch combines linux-mips.org patches 637d69600fb1773da56487271ec2a79c33d237ed [MIPS: Netlogic: Yank out crap.] and 5e3c263b9658a4b1c6c5577793e9347efb44854e [MIPS: XLR, XLS: Add Kbuild files for platform.] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2415/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: Malta: Fix crash in SMP kernel on non-CMP systems.Ralf Baechle
Since 6be63bbbdab66b9185dc6f67c8b1bacb6f37f946 (lmo) rsp. af3a1f6f4813907e143f87030cde67a9971db533 (kernel.org) the Malta code does no longer probe for presence of GCMP if CMP is not configured. This means that the variable gcmp_present well be left at its default value of -1 which normally is meant to indicate that GCMP has not yet been mmapped. This non-zero value is now interpreted as GCMP being present resulting in a write attempt to a GCMP register resulting in a crash. Reported and a build fix on top of my fix by Rob Landley <rob@landley.net>. Reported-by: Rob Landley <rob@landley.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/2413/
2011-07-20MIPS: Wire up sendmmsg and renumber setns syscall.Ralf Baechle
Renumbering was necessary because I had already wired up setns(2) in the linux-mips.org tree in commit c3fce54644cabbb90700cc3acc040718a377f609 [MIPS: Wire up new sendmmsg syscall.] but the same syscall numbers were used by 7b21fddd087678a70ad64afc0f632e0f1071b092 [ns: Wire up the setns system call] resulting in a conflict. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: SMTC: Fix build.Ralf Baechle
Commit ee6114202e48dc282c6d04741e9c5d7171eb8bb8 (lmo) rsp. 1685f3b158a244d4f6e205e67c84483fffcb2d9f (kernel.org) ["MIPS: SMTC: Move declaration of smtc_init_secondary to <asm/smtc.h>."] didn't quite do that - it rather lost the declaration of smtc_init_secondary resulting in a build error. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: Malta SMTC: Fix build.Ralf Baechle
Commit a561b02a2577aec51277ba39c82bd192a79c0267 (lmo) rsp. 7c8d948f1633da5ff81e4f5b31ef237d74c40127 (kernel.org) ["MIPS: i8259: Convert to new irq_chip functions"] missed one location to modify resulting in build breakage. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: GT64120: Remove useless inclusion of clocksource.h.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20MIPS: NILE4: Remove useless inclusion of GT64120 header.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-20ARM: mmp2: update mmp2_defconfig to support mmcZhangfei Gao
1. support brownstone 2. support mmc 3. support basic filesystem and language 4. remove dynamic_debug, since too many log during access sd Signed-off-by: Zhangfei Gao <zhangfei.gao@marvell.com> Acked-by: Philip Rakity <prakity@marvell.com> Acked-by: Mark F. Brown <mark.brown314@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: sdhci-pxa: move platform data to include/linux/platform_dataZhangfei Gao
As suggested by Arnd, move platform data to include/linux/platform_data in order to improve build coverage for the driver. Signed-off-by: Zhangfei Gao <zhangfei.gao@marvell.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: update mmp2 mmc resources in arch/armZhangfei Gao
Update MMP2 platform code to "sdhci-pxav3", following the driver rename. Signed-off-by: Zhangfei Gao <zhangfei.gao@marvell.com> Acked-by: Philip Rakity <prakity@marvell.com> Acked-by: Mark F. Brown <mark.brown314@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
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