summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2014-05-14clk: samsung: exynos5420: add clocks for ISP blockShaik Ameer Basha
This patch adds minimum set of clocks to gate ISP block for power saving. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Shaik Ameer Basha <shaik.ameer@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: exynos5420: Rename mux parent arraysShaik Ameer Basha
This patch renames the mux parent arrays as per the naming convension followed by the other exynos specific clock drivers. And it also renames "mout_cpu_kfc" clock to "mout_kfc". Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Shaik Ameer Basha <shaik.ameer@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: exynos5420: Add clock IDs needed by GPUArun Kumar K
Adds IDs for the clocks needed by the ARM Mali GPU in exynos5420. Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: exynos4: export sclk_hdmiphy clockTomasz Stanislawski
Export sclk_hdmiphy clock to be usable from DT. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: exynos5250: Add clocks for G3DArun Kumar K
This patch adds the required clocks for ARM Mali IP in Exynos5250. Signed-off-by: Arun Kumar K <arun.kk@samsung.com> [t.figa: Changed clock ID to avoid conflict with CLK_SSS] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: exynos4: Use single clock ID for CLK_MDMA gate clocksSylwester Nawrocki
Exynos4210 and Exynos4x12 SoCs have the PL330 MDMA IP block clock defined exactly in same way in documentation. Using different names for these clocks is a bit misleading. Since there is no users of CLK_MDMA2 in existing dts files this patch drops CLK_MDMA2 and replaces it with CLK_MDMA in the driver. This ensures PL330 MDMA has correct clock assigned on Exynos4x12 SoCs. Suggested-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: fixed compiler warning [-Wpointer-to-int-cast]Pankaj Dubey
When compiled using ARM64 cross compiler, gcc complains as drivers/clk/samsung/clk.c:293:18: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: exynos5420: Fix VPLL lock offsetSachin Kamat
Set it as per the user manual. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: exynos5250/5420: Add gate clock for SSS moduleNaveen Krishna Chatradhi
This patch adds gating clock for SSS(Security SubSystem) module on Exynos5250/5420. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> [t.figa: Fixed sort order and group name.] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk: samsung: Initialize clock table with error pointersTomasz Figa
Before this patch, the driver was simply zeroing the clock table, which is incorrect, because invalid clock numbers returned NULL instead of error pointers. This patch fixes this by changing the driver to initialize the array with PTR_ERR(-ENOENT). Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-05-14clk/exynos5260: add clock file for exynos5260Rahul Sharma
Add support for exynos5260 clocks in clock driver. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk/exynos5260: add macros and documentation for exynos5260Rahul Sharma
Add macros which are used as Clock IDs in DT and clock file. It also adds the documentation for the exynos5260 clocks. Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk/samsung: add support for pll2650xxRahul Sharma
Add support for pll2650xx in samsung pll file. This PLL variant is close to pll36xx but uses CON2 registers instead of CON1. Aud_pll in Exynos5260 is pll2650xx and uses this code. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Reviewed-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk/samsung: add support for pll2550xxPankaj Dubey
exynos5260 use pll2550xx and it has different bit fields for P,M,S values as compared to pll2550. Support for pll2550xx is added here. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14clk/samsung: add support for multiple clock providersRahul Sharma
Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-13ARM: S3C24XX: remove SAMSUNG_CLOCK remnants after ccf conversionHeiko Stuebner
This finally removes all remaining SAMSUNG_CLOCK conditional code from s3c24xx architectures. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13ARM: S3C24XX: remove legacy clock codeHeiko Stuebner
With the move to the common clock framework completed for s3c2410, s3c2440 and s3c2442, the legacy clock code for these machines can go away too. This also includes the legacy dclk code, as all legacy users are converted. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13ARM: S3C24XX: convert s3c2410 to common clock frameworkHeiko Stuebner
Convert the machines using the s3c2410 to use the new driver based on the common clock framework instead of the legacy Samsung clock driver. As with the s3c244x, machines using the clkout output will need a fixup from someone with the hardware. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13ARM: S3C24XX: convert s3c2440 and s3c2442 to common clock frameworkHeiko Stuebner
Convert all machines using these cpus to use the ccf clock driver instead of the legacy Samsung clock implementation. Some of the more esotheric machines will probably need a fixup, as they do strange things to the clkout outputs, that I did not really understand nor have the hardware to check. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13ARM: S3C24XX: add platform code for conversion to the common clock frameworkHeiko Stuebner
This adds the necessary init functions to init the clocks from the common clock framework and necessary CONFIG_SAMSUNG_CLOCK ifdefs around the legacy clock code. This also includes empty stubs for the *_setup_clocks functions that are called from the cpufreq driver on resume. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13clk: samsung: add clock controller driver for s3c2410, s3c2440 and s3c2442Heiko Stuebner
This driver can handle the clock controllers of the socs mentioned above, as they share a common clock tree with only small differences. The clock structure is built according to the manuals of the included SoCs and might include changes in comparison to the previous clock structure. As pll-rate-tables only the 12mhz variants are currently included. The original code was wrongly checking for 169mhz xti values [a 0 to much at the end], so the original 16mhz pll table would have never been included and its values are so obscure that I have no possibility to at least check their sane-ness. When using the formula from the manual the resulting frequency is near the table value but still slightly off. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13dt-bindings: add documentation for s3c2410 clock controllerHeiko Stuebner
Describe the clock controller of s3c2410, s3c2440 and s3c2442. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13ARM: S3C24XX: enable usage of common dclk if common clock framework is enabledHeiko Stuebner
Add platform device and select the correct implementation automatically depending on wether the old samsung_clock or the common clock framework is enabled. This is only done for machines already using the old dclk implementation, as everybody else should move to use dt anyway. The machine-specific settings for the external clocks will have to be set by somebody with knowledge about the specific hardware. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Tomasz Figa <t.figa@samsung.com> [pebolle@tiscali.nl: pointed out typo and fixed] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09clk: samsung: add clock driver for external clock outputsHeiko Stuebner
This adds a driver for controlling the external clock outputs of s3c24xx architectures including the dclk muxes and dividers. The driver at the moment only supports the legacy non-dt boards using these clock outputs. The clock-output control itself is part of the system-controller mainly controlled by the pinctrl drivers. So it should most likely be integrated there for dt platforms. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09ARM: S3C24XX: cpufreq-utils: don't write raw values to MPLLCON when using ccfHeiko Stuebner
The s3c24xx cpufreq driver needs to change the mpll speed and was doing this by writing raw values from a translation table into the MPLLCON register. Change this to use a regular clk_set_rate call when using the common clock framework and only write the raw value in the samsung_clock case. The s3c cpufreq driver does already aquire the mpll, so simply add a reference to struct s3c_cpufreq_config to let set_fvco access it. While struct clk is opaque the differenciation between samsung clock and common clock is kept, as the samsung-clock mpll clk does not implement a real set_rate. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-04Linux 3.15-rc4v3.15-rc4Linus Torvalds
2014-05-04Merge tag 'locks-v3.15-3' of git://git.samba.org/jlayton/linuxLinus Torvalds
Pull file locking change from Jeff Layton: "Only an email address change to the MAINTAINERS file" * tag 'locks-v3.15-3' of git://git.samba.org/jlayton/linux: MAINTAINERS: email address change for Jeff Layton
2014-05-04Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: "These are mostly arm64 fixes with an additional arm(64) platform fix for the initialisation of vexpress clocks (the latter only affecting arm64; the arch/arm64 code is SoC agnostic and does not rely on early SoC-specific calls) - vexpress platform clocks initialisation moved earlier following the arm64 move of of_clk_init() call in a previous commit - Default DMA ops changed to non-coherent to preserve compatibility with 32-bit ARM DT files. The "dma-coherent" property can be used to explicitly mark a device coherent. The Applied Micro DT file has been updated to avoid DMA cache maintenance for the X-Gene SATA controller (the only arm64 related driver with such assumption in -rc mainline) - Fixmap correction for earlyprintk - kern_addr_valid() fix for huge pages" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: vexpress: Initialise the sysregs before setting up the clocks arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherent arm64: Use bus notifiers to set per-device coherent DMA ops arm64: Make default dma_ops to be noncoherent arm64: fixmap: fix missing sub-page offset for earlyprintk arm64: Fix for the arm64 kern_addr_valid() function
2014-05-04Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is two patches both fixing bugs in drivers (virtio-scsi and mpt2sas) causing an oops in certain circumstances" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: [SCSI] virtio-scsi: Skip setting affinity on uninitialized vq [SCSI] mpt2sas: Don't disable device twice at suspend.
2014-05-04vexpress: Initialise the sysregs before setting up the clocksCatalin Marinas
Following arm64 commit bc3ee18a7a57 (arm64: init: Move of_clk_init to time_init()), vexpress_osc_of_setup() is called via of_clk_init() long before initcalls are issued. Initialising the vexpress oscillators requires the vespress sysregs to be already initialised, so this patch adds an explicit call to vexpress_sysreg_of_early_init() in vexpress oscillator setup function. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Tested-by: Pawel Moll <pawel.moll@arm.com> Acked-by: Pawel Moll <pawel.moll@arm.com> Cc: Mike Turquette <mturquette@linaro.org>
2014-05-03arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherentCatalin Marinas
Since the default DMA ops for arm64 are non-coherent, mark the X-Gene controller explicitly as dma-coherent to avoid additional cache maintenance. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Loc Ho <lho@apm.com>
2014-05-03arm64: Use bus notifiers to set per-device coherent DMA opsCatalin Marinas
Recently, the default DMA ops have been changed to non-coherent for alignment with 32-bit ARM platforms (and DT files). This patch adds bus notifiers to be able to set the coherent DMA ops (with no cache maintenance) for devices explicitly marked as coherent via the "dma-coherent" DT property. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-05-03arm64: Make default dma_ops to be noncoherentRitesh Harjani
Currently arm64 dma_ops is by default made coherent which makes it opposite in default policy from arm. Make default dma_ops to be noncoherent (same as arm), as currently there aren't any dma-capable drivers which assumes coherent ops Signed-off-by: Ritesh Harjani <ritesh.harjani@gmail.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-05-03arm64: fixmap: fix missing sub-page offset for earlyprintkMarc Zyngier
Commit d57c33c5daa4 (add generic fixmap.h) added (among other similar things) set_fixmap_io to deal with early ioremap of devices. More recently, commit bf4b558eba92 (arm64: add early_ioremap support) converted the arm64 earlyprintk to use set_fixmap_io. A side effect of this conversion is that my virtual machines have stopped booting when I pass "earlyprintk=uart8250-8bit,0x3f8" to the guest kernel. Turns out that the new earlyprintk code doesn't care at all about sub-page offsets, and just assumes that the earlyprintk device will be page-aligned. Obviously, that doesn't play well with the above example. Further investigation shows that set_fixmap_io uses __set_fixmap instead of __set_fixmap_offset. A fix is to introduce a set_fixmap_offset_io that uses the latter, and to remove the superflous call to fix_to_virt (which only returns the value that set_fixmap_io has already given us). With this applied, my VMs are back in business. Tested on a Cortex-A57 platform with kvmtool as platform emulation. Cc: Will Deacon <will.deacon@arm.com> Acked-by: Mark Salter <msalter@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-05-03arm64: Fix for the arm64 kern_addr_valid() functionDave Anderson
Fix for the arm64 kern_addr_valid() function to recognize virtual addresses in the kernel logical memory map. The function fails as written because it does not check whether the addresses in that region are mapped at the pmd level to 2MB or 512MB pages, continues the page table walk to the pte level, and issues a garbage value to pfn_valid(). Tested on 4K-page and 64K-page kernels. Signed-off-by: Dave Anderson <anderson@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-05-03Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Thomas Gleixner: "This udpate delivers: - A fix for dynamic interrupt allocation on x86 which is required to exclude the GSI interrupts from the dynamic allocatable range. This was detected with the newfangled tablet SoCs which have GPIOs and therefor allocate a range of interrupts. The MSI allocations already excluded the GSI range, so we never noticed before. - The last missing set_irq_affinity() repair, which was delayed due to testing issues - A few bug fixes for the armada SoC interrupt controller - A memory allocation fix for the TI crossbar interrupt controller - A trivial kernel-doc warning fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: irq-crossbar: Not allocating enough memory irqchip: armanda: Sanitize set_irq_affinity() genirq: x86: Ensure that dynamic irq allocation does not conflict linux/interrupt.h: fix new kernel-doc warnings irqchip: armada-370-xp: Fix releasing of MSIs irqchip: armada-370-xp: implement the ->check_device() msi_chip operation irqchip: armada-370-xp: fix invalid cast of signed value into unsigned variable
2014-05-03Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner: "This update brings along: - Two fixes for long standing bugs in the hrtimer code, one which prevents remote enqueuing and the other preventing arbitrary delays after a interrupt hang was detected - A fix in the timer wheel which prevents math overflow - A fix for a long standing issue with the architected ARM timer related to the C3STOP mechanism. - A trivial compile fix for nspire SoC clocksource" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timer: Prevent overflow in apply_slack hrtimer: Prevent remote enqueue of leftmost timers hrtimer: Prevent all reprogramming if hang detected clocksource: nspire: Fix compiler warning clocksource: arch_arm_timer: Fix age-old arch timer C3STOP detection issue
2014-05-03Merge tag 'trace-fixes-v3.15-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fix from Steven Rostedt: "This is a small fix where the trigger code used the wrong rcu_dereference(). It required rcu_dereference_sched() instead of the normal rcu_dereference(). It produces a nasty RCU lockdep splat due to the incorrect rcu notation" Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> * tag 'trace-fixes-v3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Use rcu_dereference_sched() for trace event triggers
2014-05-02tracing: Use rcu_dereference_sched() for trace event triggersSteven Rostedt (Red Hat)
As trace event triggers are now part of the mainline kernel, I added my trace event trigger tests to my test suite I run on all my kernels. Now these tests get run under different config options, and one of those options is CONFIG_PROVE_RCU, which checks under lockdep that the rcu locking primitives are being used correctly. This triggered the following splat: =============================== [ INFO: suspicious RCU usage. ] 3.15.0-rc2-test+ #11 Not tainted ------------------------------- kernel/trace/trace_events_trigger.c:80 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 4 locks held by swapper/1/0: #0: ((&(&j_cdbs->work)->timer)){..-...}, at: [<ffffffff8104d2cc>] call_timer_fn+0x5/0x1be #1: (&(&pool->lock)->rlock){-.-...}, at: [<ffffffff81059856>] __queue_work+0x140/0x283 #2: (&p->pi_lock){-.-.-.}, at: [<ffffffff8106e961>] try_to_wake_up+0x2e/0x1e8 #3: (&rq->lock){-.-.-.}, at: [<ffffffff8106ead3>] try_to_wake_up+0x1a0/0x1e8 stack backtrace: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.15.0-rc2-test+ #11 Hardware name: /DG965MQ, BIOS MQ96510J.86A.0372.2006.0605.1717 06/05/2006 0000000000000001 ffff88007e083b98 ffffffff819f53a5 0000000000000006 ffff88007b0942c0 ffff88007e083bc8 ffffffff81081307 ffff88007ad96d20 0000000000000000 ffff88007af2d840 ffff88007b2e701c ffff88007e083c18 Call Trace: <IRQ> [<ffffffff819f53a5>] dump_stack+0x4f/0x7c [<ffffffff81081307>] lockdep_rcu_suspicious+0x107/0x110 [<ffffffff810ee51c>] event_triggers_call+0x99/0x108 [<ffffffff810e8174>] ftrace_event_buffer_commit+0x42/0xa4 [<ffffffff8106aadc>] ftrace_raw_event_sched_wakeup_template+0x71/0x7c [<ffffffff8106bcbf>] ttwu_do_wakeup+0x7f/0xff [<ffffffff8106bd9b>] ttwu_do_activate.constprop.126+0x5c/0x61 [<ffffffff8106eadf>] try_to_wake_up+0x1ac/0x1e8 [<ffffffff8106eb77>] wake_up_process+0x36/0x3b [<ffffffff810575cc>] wake_up_worker+0x24/0x26 [<ffffffff810578bc>] insert_work+0x5c/0x65 [<ffffffff81059982>] __queue_work+0x26c/0x283 [<ffffffff81059999>] ? __queue_work+0x283/0x283 [<ffffffff810599b7>] delayed_work_timer_fn+0x1e/0x20 [<ffffffff8104d3a6>] call_timer_fn+0xdf/0x1be^M [<ffffffff8104d2cc>] ? call_timer_fn+0x5/0x1be [<ffffffff81059999>] ? __queue_work+0x283/0x283 [<ffffffff8104d823>] run_timer_softirq+0x1a4/0x22f^M [<ffffffff8104696d>] __do_softirq+0x17b/0x31b^M [<ffffffff81046d03>] irq_exit+0x42/0x97 [<ffffffff81a08db6>] smp_apic_timer_interrupt+0x37/0x44 [<ffffffff81a07a2f>] apic_timer_interrupt+0x6f/0x80 <EOI> [<ffffffff8100a5d8>] ? default_idle+0x21/0x32 [<ffffffff8100a5d6>] ? default_idle+0x1f/0x32 [<ffffffff8100ac10>] arch_cpu_idle+0xf/0x11 [<ffffffff8107b3a4>] cpu_startup_entry+0x1a3/0x213 [<ffffffff8102a23c>] start_secondary+0x212/0x219 The cause is that the triggers are protected by rcu_read_lock_sched() but the data is dereferenced with rcu_dereference() which expects it to be protected with rcu_read_lock(). The proper reference should be rcu_dereference_sched(). Cc: Tom Zanussi <tom.zanussi@linux.intel.com> Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-05-02Merge tag 'pm+acpi-3.15-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management fixes from Rafael Wysocki: "A bunch of regression fixes this time. They fix two regressions in the PNP subsystem, one in the ACPI processor driver and one in the ACPI EC driver, four cpufreq driver regressions and an unrelated bug in one of the drivers. The regressions are recent or introduced in 3.14. Specifics: - There are two bugs in the ACPI PNP core that cause errors to be returned if optional ACPI methods are not present. After an ACPI core change made in 3.14 one of those errors leads to serial port suspend failures on some systems. Fix from Rafael J Wysocki. - A recently added PNP quirk related to Intel chipsets intorduced a build error in unusual configurations (PNP without PCI). Fix from Bjorn Helgaas. - An ACPI EC workaround related to system suspend on Samsung machines added in 3.14 introduced a race causing some valid EC events to be discarded. Fix from Kieran Clancy. - The acpi-cpufreq driver fails to load on some systems after a 3.14 commit related to APIC ID parsing that overlooked one corner case. Fix from Lan Tianyu. - Fix for a recently introduced build problem in the ppc-corenet cpufreq driver from Tim Gardner. - A recent cpufreq core change to ensure serialization of frequency transitions for drivers with a ->target_index() callback overlooked the fact that some of those drivers had been doing operations introduced by it into the core already by themselves. That resulted in a mess in which the core and the drivers try to do the same thing and block each other which leads to deadlocks. Fixes for the powernow-k7, powernow-k6, and longhaul cpufreq drivers from Srivatsa S Bhat. - Fix for a computational error in the powernow-k6 cpufreq driver from Srivatsa S Bhat" * tag 'pm+acpi-3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / processor: Fix failure of loading acpi-cpufreq driver PNP / ACPI: Do not return errors if _DIS or _SRS are not present PNP: Fix compile error in quirks.c ACPI / EC: Process rather than discard events in acpi_ec_clear cpufreq: ppc-corenet-cpufreq: Fix __udivdi3 modpost error cpufreq: powernow-k7: Fix double invocation of cpufreq_freq_transition_begin/end cpufreq: powernow-k6: Fix double invocation of cpufreq_freq_transition_begin/end cpufreq: powernow-k6: Fix incorrect comparison with max_multipler cpufreq: longhaul: Fix double invocation of cpufreq_freq_transition_begin/end
2014-05-02Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds
Pull driver core deferred probe fix from Grant Likely: "Drivercore race condition fix (exposed by devicetree) This branch fixes a bug where a device can get stuck in the deferred list even though all its dependencies are met. The bug has existed for a long time, but new platform conversions to device tree have exposed it. This patch is needed to get those platforms working. This was the pending bug fix I mentioned in my previous pull request. Normally this would go through Greg's tree seeing that it is a drivercore change, but devicetree exposes the problem. I've discussed with Greg and he okayed me asking you to pull directly" * tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: drivercore: deferral race condition fix
2014-05-03Merge branches 'acpi-ec' and 'acpi-processor'Rafael J. Wysocki
* acpi-ec: ACPI / EC: Process rather than discard events in acpi_ec_clear * acpi-processor: ACPI / processor: Fix failure of loading acpi-cpufreq driver
2014-05-03Merge branch 'pnp'Rafael J. Wysocki
* pnp: PNP / ACPI: Do not return errors if _DIS or _SRS are not present PNP: Fix compile error in quirks.c
2014-05-03Merge branch 'pm-cpufreq'Rafael J. Wysocki
* pm-cpufreq: cpufreq: ppc-corenet-cpufreq: Fix __udivdi3 modpost error cpufreq: powernow-k7: Fix double invocation of cpufreq_freq_transition_begin/end cpufreq: powernow-k6: Fix double invocation of cpufreq_freq_transition_begin/end cpufreq: powernow-k6: Fix incorrect comparison with max_multipler cpufreq: longhaul: Fix double invocation of cpufreq_freq_transition_begin/end
2014-05-02Merge tag 'dm-3.15-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: "A few dm-thinp fixes for changes merged in 3.15-rc1. A dm-verity fix for an immutable biovec regression that affects 3.14+. A dm-cache fix to properly quiesce when using writethrough mode (3.14+)" * tag 'dm-3.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm cache: fix writethrough mode quiescing in cache_map dm thin: use INIT_WORK_ONSTACK in noflush_work to avoid ODEBUG warning dm verity: fix biovecs hash calculation regression dm thin: fix rcu_read_lock being held in code that can sleep dm thin: irqsave must always be used with the pool->lock spinlock
2014-05-02Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Peter Anvin: "Two very small changes: one fix for the vSMP Foundation platform, and one to help LLVM not choke on options it doesn't understand (although it probably should)" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vsmp: Fix irq routing x86: LLVMLinux: Wrap -mno-80387 with cc-option
2014-05-02Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Paolo Bonzini: - Fix for a Haswell regression in nested virtualization, introduced during the merge window. - A fix from Oleg to async page faults. - A bunch of small ARM changes. - A trivial patch to use the new MSI-X API introduced during the merge window. * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: ARM: vgic: Fix the overlap check action about setting the GICD & GICC base address. KVM: arm/arm64: vgic: fix GICD_ICFGR register accesses KVM: async_pf: mm->mm_users can not pin apf->mm KVM: ARM: vgic: Fix sgi dispatch problem MAINTAINERS: co-maintainance of KVM/{arm,arm64} arm: KVM: fix possible misalignment of PGDs and bounce page KVM: x86: Check for host supported fields in shadow vmcs kvm: Use pci_enable_msix_exact() instead of pci_enable_msix() ARM: KVM: disable KVM in Kconfig on big-endian systems
2014-05-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Two bug fixes, one to fix a potential information leak in the BPF jit and common-io-layer fix for old firmware levels" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/bpf,jit: initialize A register if 1st insn is BPF_S_LDX_B_MSH s390/chsc: fix SEI usage on old FW levels
2014-05-01Merge tag 'rdma-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull infiniband/rdma fixes from Roland Dreier: "cxgb4 hardware driver fixes" * tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: RDMA/cxgb4: Update Kconfig to include Chelsio T5 adapter RDMA/cxgb4: Only allow kernel db ringing for T4 devs RDMA/cxgb4: Force T5 connections to use TAHOE congestion control RDMA/cxgb4: Fix endpoint mutex deadlocks
2014-05-01Merge branch 'parisc-3.15-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc fixes from Helge Deller: "Drop the architecture-specifc value for_STK_LIM_MAX to fix stack related problems with GNU make" * 'parisc-3.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Use generic uapi/asm/resource.h file parisc: remove _STK_LIM_MAX override