summaryrefslogtreecommitdiff
path: root/arch
AgeCommit message (Collapse)AuthorFilesLines
2011-07-14memblock: Don't allow archs to override memblock_nid_range()Tejun Heo1-2/+2
memblock_nid_range() is used to implement memblock_[try_]alloc_nid(). The generic version determines the range by walking early_node_map with for_each_mem_pfn_range(). The generic version is defined __weak to allow arch override. Currently, only sparc overrides it; however, with the previous update to the generic implementation, there isn't much to be gained with arch override. Sparc would behave exactly the same with the generic implementation. This patch disallows arch override for memblock_nid_range() and make both generic and sparc versions static. sparc is only compile tested. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/1310460395-30913-6-git-send-email-tj@kernel.org Cc: "David S. Miller" <davem@davemloft.net> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-14bootmem: Replace work_with_active_regions() with for_each_mem_pfn_range()Tejun Heo2-54/+19
Callback based iteration is cumbersome and much less useful than for_each_*() iterator. This patch implements for_each_mem_pfn_range() which replaces work_with_active_regions(). All the current users of work_with_active_regions() are converted. This simplifies walking over early_node_map and will allow converting internal logics in page_alloc to use iterator instead of walking early_node_map directly, which in turn will enable moving node information to memblock. powerpc change is only compile tested. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/20110714074610.GD3455@htj.dyndns.org Cc: Yinghai Lu <yinghai@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-13memblock: Kill MEMBLOCK_ERRORTejun Heo10-16/+16
25818f0f28 (memblock: Make MEMBLOCK_ERROR be 0) thankfully made MEMBLOCK_ERROR 0 and there already are codes which expect error return to be 0. There's no point in keeping MEMBLOCK_ERROR around. End its misery. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/1310457490-3356-6-git-send-email-tj@kernel.org Cc: Yinghai Lu <yinghai@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-13x86: Fix memblock_x86_check_reserved_size() use in efi_reserve_boot_services()Tejun Heo1-2/+1
The return value of memblock_x86_check_reserved_size() doesn't indicate whether there's an overlapping reservatoin or not. It indicates whether the caller needs to iterate further to discover all reserved portions of the specified area. efi_reserve_boot_esrvices() wants to check whether the boot services area overlaps with other reservations but incorrectly used membloc_x86_check_reserved_size(). Use memblock_is_region_reserved() instead. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/1310457490-3356-2-git-send-email-tj@kernel.org Cc: Yinghai Lu <yinghai@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-12x86, numa: Implement pfn -> nid mapping granularity checkTejun Heo1-0/+15
SPARSEMEM w/o VMEMMAP and DISCONTIGMEM, both used only on 32bit, use sections array to map pfn to nid which is limited in granularity. If NUMA nodes are laid out such that the mapping cannot be accurate, boot will fail triggering BUG_ON() in mminit_verify_page_links(). On 32bit, it's 512MiB w/ PAE and SPARSEMEM. This seems to have been granular enough until commit 2706a0bf7b (x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too). Apparently, there is a machine which aligns NUMA nodes to 128MiB and has only AMD NUMA but not SRAT. This led to the following BUG_ON(). On node 0 totalpages: 2096615 DMA zone: 32 pages used for memmap DMA zone: 0 pages reserved DMA zone: 3927 pages, LIFO batch:0 Normal zone: 1740 pages used for memmap Normal zone: 220978 pages, LIFO batch:31 HighMem zone: 16405 pages used for memmap HighMem zone: 1853533 pages, LIFO batch:31 BUG: Int 6: CR2 (null) EDI (null) ESI 00000002 EBP 00000002 ESP c1543ecc EBX f2400000 EDX 00000006 ECX (null) EAX 00000001 err (null) EIP c16209aa CS 00000060 flg 00010002 Stack: f2400000 00220000 f7200800 c1620613 00220000 01000000 04400000 00238000 (null) f7200000 00000002 f7200b58 f7200800 c1620929 000375fe (null) f7200b80 c16395f0 00200a02 f7200a80 (null) 000375fe 00000002 (null) Pid: 0, comm: swapper Not tainted 2.6.39-rc5-00181-g2706a0b #17 Call Trace: [<c136b1e5>] ? early_fault+0x2e/0x2e [<c16209aa>] ? mminit_verify_page_links+0x12/0x42 [<c1620613>] ? memmap_init_zone+0xaf/0x10c [<c1620929>] ? free_area_init_node+0x2b9/0x2e3 [<c1607e99>] ? free_area_init_nodes+0x3f2/0x451 [<c1601d80>] ? paging_init+0x112/0x118 [<c15f578d>] ? setup_arch+0x791/0x82f [<c15f43d9>] ? start_kernel+0x6a/0x257 This patch implements node_map_pfn_alignment() which determines maximum internode alignment and update numa_register_memblks() to reject NUMA configuration if alignment exceeds the pfn -> nid mapping granularity of the memory model as determined by PAGES_PER_SECTION. This makes the problematic machine boot w/ flatmem by rejecting the NUMA config and provides protection against crazy NUMA configurations. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/20110712074534.GB2872@htj.dyndns.org LKML-Reference: <20110628174613.GP478@escobedo.osrc.amd.com> Reported-and-Tested-by: Hans Rosenfeld <hans.rosenfeld@amd.com> Cc: Conny Seidel <conny.seidel@amd.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-12x86, mm: s/PAGES_PER_ELEMENT/PAGES_PER_SECTION/Tejun Heo2-6/+6
DISCONTIGMEM on x86-32 implements pfn -> nid mapping similarly to SPARSEMEM; however, it calls each mapping unit ELEMENT instead of SECTION. This patch renames it to SECTION so that PAGES_PER_SECTION is valid for both DISCONTIGMEM and SPARSEMEM. This will be used by the next patch to implement mapping granularity check. This patch is trivial constant rename. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/20110712074422.GA2872@htj.dyndns.org Cc: Hans Rosenfeld <hans.rosenfeld@amd.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-10Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds9-23/+42
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 6994/1: smp_twd: Fix typo in 'twd_timer_rate' printing ARM: 6987/1: l2x0: fix disabling function to avoid deadlock ARM: 6966/1: ep93xx: fix inverted RTS/DTR signals on uart1 ARM: 6980/1: mmci: use StartBitErr to detect bad connections ARM: 6979/1: mach-vt8500: add forgotten irq_data conversion ARM: move memory layout sanity checking before meminfo initialization ARM: 6990/1: MAINTAINERS: add entry for ARM PMU profiling and debugging ARM: 6989/1: perf: do not start the PMU when no events are present ARM: dmabounce: fix map_single() error return value
2011-07-08Merge branch 's5p-fixes-for-linus' of ↵Linus Torvalds13-20/+36
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung * 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: S3C2440: fix section mismatch on mini2440 ARM: S3C24XX: drop return codes in void function of dma.c ARM: S3C24XX: don't use uninitialized variable in dma.c ARM: EXYNOS4: Set appropriate I2C device variant ARM: S5PC100: Fix for compilation error spi/s3c64xx: Bug fix for SPI with different FIFO level ARM: SAMSUNG: Add tx_st_done variable ARM: EXYNOS4: Address a section mismatch w/ suspend issue. ARM: S5P: Fix bug on init of PWMTimers for HRTimer ARM: SAMSUNG: header file revised to prevent declaring duplicated ARM: EXYNOS4: fix improper gpio configuration ARM: EXYNOS4: Fix card detection for sdhci 0 and 2
2011-07-08Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds5-19/+19
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: omap: drop __initdata tags from static struct platform_device declarations
2011-07-08ARM: S3C2440: fix section mismatch on mini2440Wolfram Sang1-1/+1
If mini2440_init() is in __init, mini2440_parse_features() should also be in __init. Fixes: (.text+0x9adc): Section mismatch in reference from the function mini2440_parse_features.clone.0() to the (unknown reference) .init.data:(unknown) The function mini2440_parse_features.clone.0() references the (unknown reference) __initdata (unknown). Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Michel Pollet <buserror@gmail.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-08ARM: S3C24XX: drop return codes in void function of dma.cWolfram Sang1-3/+1
Commit bb072c3c (ARM / Samsung: Use struct syscore_ops for "core" power management) turned s3c2410_dma_resume_chan() from int to void. So, drop the actual return values, too. Fixes: arch/arm/plat-s3c24xx/dma.c: In function 's3c2410_dma_resume_chan': arch/arm/plat-s3c24xx/dma.c:1238:3: warning: 'return' with a value, in function returning void arch/arm/plat-s3c24xx/dma.c:1250:2: warning: 'return' with a value, in function returning void Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-08ARM: S3C24XX: don't use uninitialized variable in dma.cWolfram Sang1-6/+2
Commit 8970ef47 (S3C24XX: Remove hardware specific registers from DMA calls) removed the parameter dcon in s3c2410_dma_config() and calculates it on its own. So the debug-output for the old parameter can go, too. Fixes: arch/arm/plat-s3c24xx/dma.c: In function 's3c2410_dma_config': arch/arm/plat-s3c24xx/dma.c:1030:2: warning: 'dcon' is used uninitialized in this function Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-07Merge branch 'stable/bug.fixes' of ↵Linus Torvalds1-28/+28
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/pci: Move check for acpi_sci_override_gsi to xen_setup_acpi_sci.
2011-07-07Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds6-3/+36
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: Don't use the EFI reboot method by default x86, suspend: Restore MISC_ENABLE MSR in realmode wakeup x86, reboot: Acer Aspire One A110 reboot quirk x86-32, NUMA: Fix boot regression caused by NUMA init unification on highmem machines
2011-07-07Merge branches 'core-urgent-for-linus', 'perf-urgent-for-linus' and ↵Linus Torvalds1-4/+10
'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: Fix boot crash when kmemleak and debugobjects enabled * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: jump_label: Fix jump_label update for modules oprofile, x86: Fix race in nmi handler while starting counters * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Disable (revert) SCHED_LOAD_SCALE increase sched, cgroups: Fix MIN_SHARES on 64-bit boxen
2011-07-07xen/pci: Move check for acpi_sci_override_gsi to xen_setup_acpi_sci.Konrad Rzeszutek Wilk1-28/+28
Previously we would check for acpi_sci_override_gsi == gsi every time a PCI device was enabled. That works during early bootup, but later on it could lead to triggering unnecessarily the acpi_gsi_to_irq(..) lookup. The reason is that acpi_sci_override_gsi was declared in __initdata and after early bootup could contain bogus values. This patch moves the check for acpi_sci_override_gsi to the site where the ACPI SCI is preset. CC: stable@kernel.org Reported-by: Raghavendra D Prabhu <rprabhu@wnohang.net> Tested-by: Raghavendra D Prabhu <rprabhu@wnohang.net> [http://lists.xensource.com/archives/html/xen-devel/2011-07/msg00154.html] Suggested-by: Ian Campbell <ijc@hellion.org.uk> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-07-07ARM: 6994/1: smp_twd: Fix typo in 'twd_timer_rate' printingVitaly Kuzmichev1-1/+1
To get hundredths of MHz the rate needs to be divided by 10'000. Here is an example: twd_timer_rate = 123456789 Before the patch: twd_timer_rate / 1000000 = 123 (twd_timer_rate / 1000000) % 100 = 23 Result: 123.23MHz. After being fixed: twd_timer_rate / 1000000 = 123 (twd_timer_rate / 10000) % 100 = 45 Result: 123.45MHz. Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-07x86: Don't use the EFI reboot method by defaultMatthew Garrett1-3/+0
Testing suggests that at least some Lenovos and some Intels will fail to reboot via EFI, attempting to jump to an unmapped physical address. In the long run we could handle this by providing a page table with a 1:1 mapping of physical addresses, but for now it's probably just easier to assume that ACPI or legacy methods will be present and reboot via those. Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alan Cox <alan@linux.intel.com> Link: http://lkml.kernel.org/r/1309985557-15350-1-git-send-email-mjg@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-06x86, suspend: Restore MISC_ENABLE MSR in realmode wakeupKees Cook3-0/+26
Some BIOSes will reset the Intel MISC_ENABLE MSR (specifically the XD_DISABLE bit) when resuming from S3, which can interact poorly with ebba638ae723d8a8fc2f7abce5ec18b688b791d7. In 32bit PAE mode, this can lead to a fault when EFER is restored by the kernel wakeup routines, due to it setting the NX bit for a CPU that (thanks to the BIOS reset) now incorrectly thinks it lacks the NX feature. (64bit is not affected because it uses a common CPU bring-up that specifically handles the XD_DISABLE bit.) The need for MISC_ENABLE being restored so early is specific to the S3 resume path. Normally, MISC_ENABLE is saved in save_processor_state(), but this happens after the resume header is created, so just reproduce the logic here. (acpi_suspend_lowlevel() creates the header, calls do_suspend_lowlevel, which calls save_processor_state(), so the saved processor context isn't available during resume header creation.) [ hpa: Consider for stable if OK in mainline ] Signed-off-by: Kees Cook <kees.cook@canonical.com> Link: http://lkml.kernel.org/r/20110707011034.GA8523@outflux.net Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: <stable@kernel.org> 2.6.38+
2011-07-06ARM: 6987/1: l2x0: fix disabling function to avoid deadlockWill Deacon1-6/+13
The l2x0_disable function attempts to writel with the l2x0_lock held. This results in deadlock when the writel contains an outer_sync call for the platform since the l2x0_lock is already held by the disable function. A further problem is that disabling the L2 without flushing it first can lead to the spin_lock operation becoming visible after the spin_unlock, causing any subsequent L2 maintenance to deadlock. This patch replaces the writel with a call to writel_relaxed in the disabling code and adds a flush before disabling in the control register, preventing livelock from occurring. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-06ARM: 6966/1: ep93xx: fix inverted RTS/DTR signals on uart1Petr Štetiar1-2/+2
It was discovered by Roberto Bergo, that RTS/DTR signals are inverted after the boot, because it was causing him problems with hardware controlled modem connected on ttyAM0. Todd Valentic came with this patch for the issue. Discussion: http://tech.groups.yahoo.com/group/ts-7000/message/20259 Comments from Petr Štetiar: Sorry, but forget to add Acked-by[1]: 1. https://patchwork.kernel.org/patch/873052/ Cc: Ryan Mallon <ryan@bluewatersys.com> Cc: Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Todd Valentic <todd.valentic@sri.com> Tested-by: Roberto Bergo <roberto.bergo@robson.it> Signed-off-by: Petr Štetiar <ynezz@true.cz> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-06ARM: 6979/1: mach-vt8500: add forgotten irq_data conversionWolfram Sang1-9/+12
This platform has not been converted to 'struct irq_data' when the big pile was done and fails to compile nowadays. Tested on a JayPC-Tablet. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Alexey Charkov <alchark@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-06ARM: EXYNOS4: Set appropriate I2C device variantSylwester Nawrocki1-0/+6
Set up a correct I2C bus controller variant name for Exynos4. Without this change the I2C bus driver fails to acquire its clocks. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-06Merge branch 'for-spi' into s5p-fixes-for-linusKukjin Kim5-0/+13
2011-07-06ARM: S5PC100: Fix for compilation errorPadmavathi Venna1-0/+1
S5PC100 Compilation fails without this patch Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-06ARM: SAMSUNG: Add tx_st_done variablePadmavathi Venna5-0/+13
tx_st_done is required for checking the transmission status of SPI channels with different fifo levels Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Acked-by: Jassi Brar <jassisinghbrar@gmail.com Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-05x86, reboot: Acer Aspire One A110 reboot quirkPeter Chubb1-0/+8
Since git commit 660e34cebf0a11d54f2d5dd8838607452355f321 x86: reorder reboot method preferences, my Acer Aspire One hangs on reboot. It appears that its ACPI method for rebooting is broken. The attached patch adds a quirk so that the machine will reboot via the BIOS. [ hpa: verified that the ACPI control on this machine is just plain broken. ] Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au> Link: http://lkml.kernel.org/r/w439iki5vl.wl%25peter@chubb.wattle.id.au Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2011-07-06ARM: EXYNOS4: Address a section mismatch w/ suspend issue.MyungJoo Ham1-1/+1
The section mismatch in headsmp.S made hotplug stop working after the first instance of suspend-to-RAM and its wakeup. 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>
2011-07-06ARM: S5P: Fix bug on init of PWMTimers for HRTimerSangbeom Kim1-2/+2
This patch fixes following. <6>[ 0.000000] sched_clock: 32 bits at 33MHz, ... <6>[ 128.651309] Calibrating delay loop... There is a big jump. The reason is that PWM Timer which is for HRTimer was used before its initialization. So this patch changes its order and following is kernel boot log message after this. <6>[ 0.000000] sched_clock: 32 bits at 33MHz, ... <6>[ 0.000088] Calibrating delay loop... Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-06ARM: SAMSUNG: header file revised to prevent declaring duplicatedMyungJoo Ham1-0/+6
There has been no #ifndef - #define - #endif protection for this header file. Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-06ARM: EXYNOS4: fix improper gpio configurationNaveen Krishna Chatradhi1-1/+1
These pins are incorrectly configured for PCM2 configure them to SPDIF(_OUT & _EXT_CLK) Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-06ARM: EXYNOS4: Fix card detection for sdhci 0 and 2Thomas Abraham1-6/+2
On SMDKV310 board, a card detect gpio pin is available that is directly connected to the io pad of the sdhci controller. Fix incorrect value of cd_type field in platform data for sdhci instance 0 and 2. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-05ARM: move memory layout sanity checking before meminfo initializationRussell King3-2/+9
Ensure that the meminfo array is sanity checked before we pass the memory to memblock. This helps to ensure that memblock and meminfo agree on the dimensions of memory, especially when more memory is passed than the kernel can deal with. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-05ARM: 6989/1: perf: do not start the PMU when no events are presentWill Deacon1-2/+4
armpmu_enable can be called in situations where no events are present (for example, from the event rotation tick after a profiled task has exited). In this case, we currently start the PMU anyway which may leave it active inevitably without any events being monitored. This patch adds a simple check to the enabling code so that we avoid starting the PMU when no events are present. Cc: <stable@kernel.org> Reported-by: Ashwin Chaugle <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-04Merge branch 'at91/fixes' of ↵Linus Torvalds18-32/+32
git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-2.6-arm-soc * 'at91/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-2.6-arm-soc: AT91: Change nand buswidth logic to match hardware default configuration at91: Use "pclk" as con_id on at91cap9 and at91rm9200 at91: fix udc, ehci and mmc clock device name for cap9/9g45/9rl atmel_serial: fix internal port num at91: fix at91_set_serial_console: use platform device id
2011-07-04AT91: Change nand buswidth logic to match hardware default configurationNicolas Ferre7-11/+11
The recently modified nand buswitth configuration is not aligned with board reality: the double footprint on boards is always populated with 8bits buswidth nand flashes. So we have to consider that without particular configuration the 8bits buswidth is selected by default. Moreover, the previous logic was always using !board_have_nand_8bit(), we change it to a simpler: board_have_nand_16bit(). Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2011-07-04omap: drop __initdata tags from static struct platform_device declarationsJanusz Krzysztofik5-19/+19
Pointers to statically declared platform device structures which are registered with platform_device_register() are then used during run time to access these structure members, for example from platform_uevent() and much more. Therefore, these structures should never be placed inside sections which are dropped after boot. Fix platform devices incorrectly tagged with __initdata which happen to exist inside OMAP sub-trees. This bug has exhibited itself on my ARM/OMAP1 based Amstrad Delta videophone after commit 6d3163ce86dd386b4f7bda80241d7fea2bc0bb1d, "mm: check if any page in a pageblock is reserved before marking it MIGRATE_RESERVE", resulting in reading from several /sys/device/platform/*/uevent files always ending up with segmentation faults. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Acked-by: Felipe Balbi <balbi@ti.com> Cc: Varadarajan, Charulatha <charu@ti.com> Cc: Jarkko Nikula <jhnikula@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-07-03ARM: dmabounce: fix map_single() error return valueRussell King1-1/+1
When map_single() is unable to obtain a safe buffer, we must return the dma_addr_t error value, which is ~0 rather than 0. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-01Merge branch 'stable/bug.fixes' of ↵Linus Torvalds2-2/+28
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/pci: Use the INT_SRC_OVR IRQ (instead of GSI) to preset the ACPI SCI IRQ. xen/mmu: Fix for linker errors when CONFIG_SMP is not defined.
2011-07-01x86-32, NUMA: Fix boot regression caused by NUMA init unification on highmem ↵Tejun Heo1-0/+2
machines During 32/64 NUMA init unification, commit 797390d855 ("x86-32, NUMA: use sparse_memory_present_with_active_regions()") made 32bit mm init call memory_present() automatically from active_regions instead of leaving it to each NUMA init path. This commit description is inaccurate - memory_present() calls aren't the same for flat and numaq. After the commit, memory_present() is only called for the intersection of e820 and NUMA layout. Before, on flatmem, memory_present() would be called from 0 to max_pfn. After, it would be called only on the areas that e820 indicates to be populated. This is how x86_64 works and should be okay as memmap is allowed to contain holes; however, x86_32 DISCONTIGMEM is missing early_pfn_valid(), which makes memmap_init_zone() assume that memmap doesn't contain any hole. This leads to the following oops if e820 map contains holes as it often does on machine with near or more 4GiB of memory by calling pfn_to_page() on a pfn which isn't mapped to a NUMA node, a reported by Conny Seidel: BUG: unable to handle kernel paging request at 000012b0 IP: [<c1aa13ce>] memmap_init_zone+0x6c/0xf2 *pdpt =3D 0000000000000000 *pde =3D f000eef3f000ee00 Oops: 0000 [#1] SMP last sysfs file: Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.39-rc5-00164-g797390d #1 To Be Filled By O.E.M. To Be Filled By O.E.M./E350M1 EIP: 0060:[<c1aa13ce>] EFLAGS: 00010012 CPU: 0 EIP is at memmap_init_zone+0x6c/0xf2 EAX: 00000000 EBX: 000a8000 ECX: 000a7fff EDX: f2c00b80 ESI: 000a8000 EDI: f2c00800 EBP: c19ffe54 ESP: c19ffe34 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process swapper (pid: 0, ti=3Dc19fe000 task=3Dc1a07f60 task.ti=3Dc19fe000) Stack: 00000002 00000000 0023f000 00000000 10000000 00000a00 f2c00000 f2c00b58 c19ffeb0 c1a80f24 000375fe 00000000 f2c00800 00000800 00000100 00000030 c1abb768 0000003c 00000000 00000000 00000004 00207a02 f2c00800 000375fe Call Trace: [<c1a80f24>] free_area_init_node+0x358/0x385 [<c1a81384>] free_area_init_nodes+0x420/0x487 [<c1a79326>] paging_init+0x114/0x11b [<c1a6cb13>] setup_arch+0xb37/0xc0a [<c1a69554>] start_kernel+0x76/0x316 [<c1a690a8>] i386_start_kernel+0xa8/0xb0 This patch fixes the bug by defining early_pfn_valid() to be the same as pfn_valid() when DISCONTIGMEM. Reported-bisected-and-tested-by: Conny Seidel <conny.seidel@amd.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: hans.rosenfeld@amd.com Cc: Christoph Lameter <cl@linux.com> Cc: Conny Seidel <conny.seidel@amd.com> Link: http://lkml.kernel.org/r/20110628094107.GB3386@htj.dyndns.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-06-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds1-1/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: watchdog: update author email for at32ap700x_wdt watchdog: gef_wdt: fix MODULE_ALIAS watchdog: Intel SCU Watchdog: Fix build and remove duplicate code watchdog: mtx1-wdt: fix section mismatch watchdog: mtx1-wdt: fix GPIO toggling watchdog: mtx1-wdt: request gpio before using it watchdog: Handle multiple wm831x watchdogs being registered
2011-06-30Merge branch 'sh-fixes-for-linus' of ↵Linus Torvalds5-40/+94
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x * 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x: sh: use printk_ratelimited instead of printk_ratelimit sh: Fix up unmet dependency warnings with USB EHCI/OHCI selects. sh: fix the value of sh_dmae_slave_config in setup-sh7757 sh: fix the INTC vector for IRQ and IRL in setup-sh7757 sh: add to select the new configuration for USB EHCI/OHCI sh: add platform_device of EHCI/OHCI to setup-sh7757 sh: fix compile error using sh7757lcr_defconfig
2011-06-30Merge branch 'rmobile-fixes-for-linus' of ↵Linus Torvalds3-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x * 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x: ARM: mach-shmobile: make a struct in board-ap4evb.c static ARM: mach-shmobile: ag5evm: consistently name sdhi info structures ARM: mach-shmobile: mackerel: change usbhs devices order
2011-06-30xen/pci: Use the INT_SRC_OVR IRQ (instead of GSI) to preset the ACPI SCI IRQ.Konrad Rzeszutek Wilk1-2/+24
In the past we would use the GSI value to preset the ACPI SCI IRQ which worked great as GSI == IRQ: ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level) While that is most often seen, there are some oddities: ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level) which means that GSI 20 (or pin 20) is to be overriden for IRQ 9. Our code that presets the interrupt for ACPI SCI however would use the GSI 20 instead of IRQ 9 ending up with: xen: sci override: global_irq=20 trigger=0 polarity=1 xen: registering gsi 20 triggering 0 polarity 1 xen: --> pirq=20 -> irq=20 xen: acpi sci 20 .. snip.. calling acpi_init+0x0/0xbc @ 1 ACPI: SCI (IRQ9) allocation failed ACPI Exception: AE_NOT_ACQUIRED, Unable to install System Control Interrupt handler (20110413/evevent-119) ACPI: Unable to start the ACPI Interpreter as the ACPI interpreter made a call to 'acpi_gsi_to_irq' which got nine. It used that value to request an IRQ (request_irq) and since that was not present it failed. The fix is to recognize that for interrupts that are overriden (in our case we only care about the ACPI SCI) we should use the IRQ number to present the IRQ instead of the using GSI. End result is that we get: xen: sci override: global_irq=20 trigger=0 polarity=1 xen: registering gsi 20 triggering 0 polarity 1 xen: --> pirq=20 -> irq=9 (gsi=9) xen: acpi sci 9 which fixes the ACPI interpreter failing on startup. CC: stable@kernel.org Reported-by: Liwei <xieliwei@gmail.com> Tested-by: Liwei <xieliwei@gmail.com> [http://lists.xensource.com/archives/html/xen-devel/2011-06/msg01727.html] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-06-30xen/mmu: Fix for linker errors when CONFIG_SMP is not defined.Konrad Rzeszutek Wilk1-0/+4
Simple enough - we use an extern defined symbol which is not defined when CONFIG_SMP is not defined. This fixes the linker dying. CC: stable@kernel.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-06-30sh: use printk_ratelimited instead of printk_ratelimitPaul Mundt2-7/+8
Follows the powerpc change, for much the same rationale. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-06-30sh: Fix up unmet dependency warnings with USB EHCI/OHCI selects.Paul Mundt1-5/+5
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-06-30ARM: mach-shmobile: make a struct in board-ap4evb.c staticGuennadi Liakhovetski1-1/+1
struct soc_camera_link imx074_link in board-ap4evb.c doesn't have to be global. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-06-29Merge branch 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds1-5/+7
* 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86 emulator: fix %rip-relative addressing with immediate source operand
2011-06-29Merge branch 'merge' of ↵Linus Torvalds9-91/+102
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: arch/powerpc: use printk_ratelimited instead of printk_ratelimit powerpc/rtas-rtc: remove sideeffects of printk_ratelimit powerpc/pseries: remove duplicate SCSI_BNX2_ISCSI in pseries_defconfig powerpc/e500: fix breakage with fsl_rio_mcheck_exception powerpc/p1022ds: fix audio-related properties in the device tree powerpc/85xx: fix NAND_CMD_READID read bytes number
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 18:04:10 +0000