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2012-05-09percpu: pcpu_embed_first_chunk() should free unused parts after all allocs ↵Tejun Heo
are complete pcpu_embed_first_chunk() allocates memory for each node, copies percpu data and frees unused portions of it before proceeding to the next group. This assumes that allocations for different nodes doesn't overlap; however, depending on memory topology, the bootmem allocator may end up allocating memory from a different node than the requested one which may overlap with the portion freed from one of the previous percpu areas. This leads to percpu groups for different nodes overlapping which is a serious bug. This patch separates out copy & partial free from the allocation loop such that all allocations are complete before partial frees happen. This also fixes overlapping frees which could happen on allocation failure path - out_free_areas path frees whole groups but the groups could have portions freed at that point. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org Reported-by: "Pavel V. Panteleev" <pp_84@mail.ru> Tested-by: "Pavel V. Panteleev" <pp_84@mail.ru> LKML-Reference: <E1SNhwY-0007ui-V7.pp_84-mail-ru@f220.mail.ru>
2012-05-09Merge tag 'omap-fixes-for-v3.4-rc6-take-2' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes Fix two board spefific regressions and one regression caused by bad documentation By Archit Taneja (1) and others via Tony Lindgren * tag 'omap-fixes-for-v3.4-rc6-take-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP: igep0020: fix smsc911x dummy regulator id ARM: OMAP: Revert "ARM: OMAP: ctrl: Fix CONTROL_DSIPHY register fields" ARM: OMAP1: Amstrad Delta: Fix wrong IRQ base in FIQ handler
2012-05-09ARM: OMAP: igep0020: fix smsc911x dummy regulator idEnrico Butera
id 0 is already used and causes errors at boot: WARNING: at fs/sysfs/dir.c:508 sysfs_add_one+0x9c/0xac() sysfs: cannot create duplicate filename '/devices/platform/reg-fixed-voltage.0' Fix it by using the next available one (id=1). This was caused by 5b3689f4 (ARM: OMAP2+: smsc911x: Add fixed board regulators) that did not account for some regulators already being used. Signed-off-by: Enrico Butera <ebutera@users.berlios.de> [tony@atomide.com: updated comments for regression causing commit] Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09regmap: fix possible memory corruption in regmap_bulk_read()Laxman Dewangan
The function regmap_bulk_read() calls the regmap_read() for each register if set of register has volatile and cache is enabled. In this case, last few register read makes the memory corruption if the register size is not the size of unsigned int. The regam_read() takes argument as unsigned int for returning value and it update the value as *val = map->format.parse_val(map->work_buf); This causes complete 4 bytes (size of unsigned int) to get written. Now if client pass the memory pointer for value which is equal to the required size of register count in regmap_bulk_read() then last few register read actually update the memory beyond passed pointer size. Avoid this by using local variable for read and then do memcpy() for actual byte copy to passed pointer based on register size. I allocated one pointer ptr and take first 16 bytes dump of that pointer then call regmap_bulk_read() with pointer which is just on top of this allocated pointer and register count of 128. Here register size is 1 byte. The memory trace of last 5 register read are as follows: [ 5.438589] regmap_bulk_read after regamp_read() for register 122 [ 5.447421] 0xef993c20 0xef993c00 0x00000000 0x00000001 [ 5.467535] regmap_bulk_read after regamp_read() for register 123 [ 5.476374] 0xef993c20 0xef993c00 0x00000000 0x00000001 [ 5.496425] regmap_bulk_read after regamp_read() for register 124 [ 5.505260] 0xef993c20 0xef993c00 0x00000000 0x00000001 [ 5.525372] regmap_bulk_read after regamp_read() for register 125 [ 5.534205] 0xef993c00 0xef993c00 0x00000000 0x00000001 [ 5.554258] regmap_bulk_read after regamp_read() for register 126 [ 5.563100] 0xef990000 0xef993c00 0x00000000 0x00000001 [ 5.554258] regmap_bulk_read after regamp_read() for register 127 [ 5.587108] 0xef000000 0xef993c00 0x00000000 0x00000001 Here it is observed that the memory content at first word started changing on last 3 regmap_read() and so corruption happened. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-09Merge tag 'asoc-3.4' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Build fix for SH in 3.4 An API update which wasn't sufficiently thorough in updating the tree...
2012-05-09ASoC: rt5631: Convert to direct regmap API usageMark Brown
We're trying to remove all usage of the ASoc level cache and I/O code and for a device like this with a pretty sparse register map the rbtree cache is a better idea anyway. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-09ASoC: rt5631: Convert to module_i2c_driver()Mark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-09ASoC: Ux500: Add MSP I2S-driverOla Lilja
Add driver for running I2S with the MSP-block. Signed-off-by: Ola Lilja <ola.o.lilja@stericsson.com> [Fixed trailing whitespace -- broonie] Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-09ASoC: sh: fix migor.c compilationGuennadi Liakhovetski
Fix a recent compilation breakage, caused by a change in SH clock API. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-09KVM: ia64: fix build due to typoAvi Kivity
s/kcm/kvm/. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-05-09ALSA: HDA: Lessen CPU usage when waiting for chip to respondDavid Henningsson
When an IRQ for some reason gets lost, we wait up to a second using udelay, which is CPU intensive. This patch improves the situation by waiting about 30 ms in the CPU intensive mode, then stepping down to using msleep(2) instead. In essence, we trade some granularity in exchange for less CPU consumption when the waiting time is a bit longer. As a result, PulseAudio should no longer be killed by the kernel for taking up to much RT-prio CPU time. At least not for *this* reason. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Tested-by: Arun Raghavan <arun.raghavan@collabora.co.uk> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-05-09Merge branch 'kirkwood_fixes_for_v3.4' of ↵Olof Johansson
git://git.infradead.org/users/jcooper/linux-kirkwood into fixes By Ben Hutchings (1) and Ian Campbell (1) via Jason Cooper: "ARM: kirkwood: fixes for v3.4" * 'kirkwood_fixes_for_v3.4' of git://git.infradead.org/users/jcooper/linux-kirkwood: ARM: orion5x: Fix GPIO enable bits for MPP9 ARM: kirkwood: add missing kexec.h include
2012-05-09powerpc/irq: Make alignment & program interrupt behave the sameBenjamin Herrenschmidt
Alignment was the last user of the ENABLE_INTS macro, which we can now remove. All non-syscall exceptions now disable interrupts on entry, they get re-enabled conditionally from C code. Don't unconditionally re-enable in program check either, check the original context. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-05-09powerpc/irq: Fix bug with new lazy IRQ handling codeBenjamin Herrenschmidt
We had a case where we could turn on hard interrupts while leaving the PACA_IRQ_HARD_DIS bit set in the PACA. This can in turn cause a BUG_ON() to hit in __check_irq_replay() due to interrupt state getting out of sync. The assembly code was also way too convoluted. Instead, we now leave it to the C code to do the right thing which ends up being smaller and more readable. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-05-08r8169: fix unsigned int wraparound with TSOJulien Ducourthial
The r8169 may get stuck or show bad behaviour after activating TSO : the net_device is not stopped when it has no more TX descriptors. This problem comes from TX_BUFS_AVAIL which may reach -1 when all transmit descriptors are in use. The patch simply tries to keep positive values. Tested with 8111d(onboard) on a D510MO, and with 8111e(onboard) on a Zotac 890GXITX. Signed-off-by: Julien Ducourthial <jducourt@free.fr> Acked-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-08Merge branch 'fixes' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
2012-05-08ARM: orion5x: Fix GPIO enable bits for MPP9Ben Hutchings
Commit 554cdaefd1cf7bb54b209c4e68c7cec87ce442a9 ('ARM: orion5x: Refactor mpp code to use common orion platform mpp.') seems to have accidentally inverted the GPIO valid bits for MPP9 (only). For the mv2120 platform which uses MPP9 as a GPIO LED device, this results in the error: [ 12.711476] leds-gpio: probe of leds-gpio failed with error -22 Reported-by: Henry von Tresckow <hvontres@gmail.com> References: http://bugs.debian.org/667446 Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: stable@vger.kernel.org [v3.0+] Tested-by: Hans Henry von Tresckow <hvontres@gmail.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-05-08Merge tag 'regulator-3.4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "One small fix for an edge condition in the max8997 driver and a fix for a surprise in the devres API which caused devm_regulator_put() to not actually put the regulator - a nicer version of this based on an improvement of the devres API is queued for 3.5." * tag 'regulator-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: Actually free the regulator in devm_regulator_put() regulator: Fix the logic to ensure new voltage setting in valid range
2012-05-08ARM: kirkwood: add missing kexec.h includeIan Campbell
Fixes the following build error when CONFIG_KEXEC is enabled: CC arch/arm/mach-kirkwood/board-dt.o arch/arm/mach-kirkwood/board-dt.c: In function 'kirkwood_dt_init': arch/arm/mach-kirkwood/board-dt.c:52:2: error: 'kexec_reinit' undeclared (first use in this function) arch/arm/mach-kirkwood/board-dt.c:52:2: note: each undeclared identifier is reported only once for each function it appears in Signed-off-by: Ian Campbell <ijc@hellion.org.uk> [v4, rebase onto recent Linus for repost] [v3, speak actual English in the commit message, thanks Sergei Shtylyov] [v2, using linux/kexec.h not asm/kexec.h] Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-05-08Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Two fixes from Intel, one a regression, one because I merged an early version of a fix. Also the nouveau revert of the i2c code that was tested on the list." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/nouveau/i2c: resume use of i2c-algo-bit, rather than custom stack drm/i915: Do no set Stencil Cache eviction LRA w/a on gen7+ drm/i915: disable sdvo hotplug on i945g/gm
2012-05-08Merge tag 'stable/for-linus-3.4-rc6-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull xen fixes from Konrad Rzeszutek Wilk: - fix to Kconfig to make it fit within 80 line characters, - two bootup fixes (AMD 8-core and with PCI BIOS), - cleanup code in a Xen PV fb driver, - and a crash fix when trying to see non-existent PTE's * tag 'stable/for-linus-3.4-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/Kconfig: fix Kconfig layout xen/pci: don't use PCI BIOS service for configuration space accesses xen/pte: Fix crashes when trying to see non-existent PGD/PMD/PUD/PTEs xen/apic: Return the APIC ID (and version) for CPU 0. drivers/video/xen-fbfront.c: add missing cleanup code
2012-05-08Merge branch 'for-3.4-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu Pull two percpu fixes from Tejun Heo: "One adds missing KERN_CONT on split printk()s and the other makes the percpu allocator avoid using PMD_SIZE as atom_size on x86_32. Using PMD_SIZE led to vmalloc area exhaustion on certain configurations (x86_32 android) and the only cost of using PAGE_SIZE instead is static percpu area not being aligned to large page mapping." * 'for-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu, x86: don't use PMD_SIZE as embedded atom_size on 32bit percpu: use KERN_CONT in pcpu_dump_alloc_info()
2012-05-08Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds
Pull ARM fixes from Russell King: "This is mainly audit fixes, found by folks who happened to enable this feature and then found it broke their user applications." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7414/1: SMP: prevent use of the console when using idmap_pgd ARM: 7412/1: audit: use only AUDIT_ARCH_ARM regardless of endianness ARM: 7411/1: audit: fix treatment of saved ip register during syscall tracing ARM: 7410/1: Add extra clobber registers for assembly in kernel_execve
2012-05-08ASoC: alc5632: Convert to devm_regmap_init_i2c()Axel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-08ASoC: alc5632: Convert to module_i2c_driver()Axel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-08ASoC: alc5623: Convert to module_i2c_driver()Axel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-08sfc: Fix division by zero when using one RX channel and no SR-IOVBen Hutchings
If RSS is disabled on the PF (efx->n_rx_channels == 1) we try to set up the indirection table so that VFs can use it, setting efx->rss_spread = efx_vf_size(efx). But if SR-IOV was disabled at compile time, this evaluates to 0 and we end up dividing by zero when initialising the table. I considered changing the fallback definition of efx_vf_size() to return 1, but its value is really meaningless if we are not going to enable VFs. Therefore add a condition of efx_sriov_wanted(efx) in efx_probe_interrupts(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-05-08percpu, x86: don't use PMD_SIZE as embedded atom_size on 32bitTejun Heo
With the embed percpu first chunk allocator, x86 uses either PAGE_SIZE or PMD_SIZE for atom_size. PMD_SIZE is used when CPU supports PSE so that percpu areas are aligned to PMD mappings and possibly allow using PMD mappings in vmalloc areas in the future. Using larger atom_size doesn't waste actual memory; however, it does require larger vmalloc space allocation later on for !first chunks. With reasonably sized vmalloc area, PMD_SIZE shouldn't be a problem but x86_32 at this point is anything but reasonable in terms of address space and using larger atom_size reportedly leads to frequent percpu allocation failures on certain setups. As there is no reason to not use PMD_SIZE on x86_64 as vmalloc space is aplenty and most x86_64 configurations support PSE, fix the issue by always using PMD_SIZE on x86_64 and PAGE_SIZE on x86_32. v2: drop cpu_has_pse test and make x86_64 always use PMD_SIZE and x86_32 PAGE_SIZE as suggested by hpa. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Yanmin Zhang <yanmin.zhang@intel.com> Reported-by: ShuoX Liu <shuox.liu@intel.com> Acked-by: H. Peter Anvin <hpa@zytor.com> LKML-Reference: <4F97BA98.6010001@intel.com> Cc: stable@vger.kernel.org
2012-05-08KVM: PPC: Book3S HV: Fix refcounting of hugepagesDavid Gibson
The H_REGISTER_VPA hcall implementation in HV Power KVM needs to pin some guest memory pages into host memory so that they can be safely accessed from usermode. It does this used get_user_pages_fast(). When the VPA is unregistered, or the VCPUs are cleaned up, these pages are released using put_page(). However, the get_user_pages() is invoked on the specific memory are of the VPA which could lie within hugepages. In case the pinned page is huge, we explicitly find the head page of the compound page before calling put_page() on it. At least with the latest kernel, this is not correct. put_page() already handles finding the correct head page of a compound, and also deals with various counts on the individual tail page which are important for transparent huge pages. We don't support transparent hugepages on Power, but even so, bypassing this count maintenance can lead (when the VM ends) to a hugepage being released back to the pool with a non-zero mapcount on one of the tail pages. This can then lead to a bad_page() when the page is released from the hugepage pool. This removes the explicit compound_head() call to correct this bug. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-05-08Revert "ALSA: hda - Set codec to D3 forcibly even if not used"Takashi Iwai
This reverts commit 785f857d1cb0856b612b46a0545b74aa2596e44a. The commit causes a problem with the wrong D3 state after suspend because the call of hda_set_power_state() involves with the power-up sequence, which changes the power_count, and this confuses the resume sequence that checks the power_count as well. Originally, this go-to-D3 sequence should be a simple task without the power-up sequence. But, it'd need some proper sanity checks in the case of power-saved state, so it's not too easy to write now in the 3.4-rc cycle. In short, the safest option now is to revert this affecting commit. Of course, we need to clean up and robustify the power-saving code better for 3.5 kernel. Reported-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-05-08ALSA: hda/realtek - Call alc_auto_parse_customize_define() always after fixupTakashi Iwai
The call for alc_auto_parse_customize_define() must be done after the fixup pre-probe initialization. Otherwise SKU_IGNORE fixup won't work properly (e.g. HP RP5800 with ALC662 codec). Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-05-08ASoC: wm9081: Hook DAC up via DAPM rather than streamMark Brown
More current API usage. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-08ASoC: lowland: Support digital link for WM9081Mark Brown
The WM9081 on Lowland is connected to AIF3 on the WM5100. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-08ASoC: lowland: Convert to dai_fmtMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-08ASoC: pcm: Fix DPCM for aux_devsMark Brown
When we instantiate an aux_dev we use a fake rtd as part of the process which doesn't have a dai_link associated with it. Fix the dpcm startup code to cope with this. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2012-05-08ALSA: hdsp - Provide ioctl_compatAndre Schramm
snd_hdsp uses its own ioctls to acquire config- and status information. Expose the corresponding ioctl handler via ioctl_compat, so that 32bit applications can use it on 64bit kernels. Signed-off-by: Andre Schramm <andre.schramm@iosono-sound.com> Reviewed-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-05-08m68knommu: enable qspi support when SPI_COLDFIRE_QSPI = mSteven King
Enable Coldfire QSPI support when SPI_COLDFIRE_QSPI is built as a module. This version of the patch combines changes to the config files and device.c and uses IF_ENABLED (thanks to Sam Ravnborg for the suggestion). Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-05-07openvswitch: Validation of IPv6 set port action uses IPv4 headerPravin B Shelar
When the kernel validates set TCP/UDP port actions, it looks at the ports in the existing flow to make sure that the L4 header exists. However, these actions always use the IPv4 version of the struct. Following patch fixes this by checking for flow ip protocol first. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-05-07net: compare_ether_addr[_64bits]() has no orderingJohannes Berg
Neither compare_ether_addr() nor compare_ether_addr_64bits() (as it can fall back to the former) have comparison semantics like memcmp() where the sign of the return value indicates sort order. We had a bug in the wireless code due to a blind memcmp replacement because of this. A cursory look suggests that the wireless bug was the only one due to this semantic difference. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-07ASoC: twl6040: Remove HS/HF gain ramp featurePeter Ujfalusi
None of the machines uses the gain ramp possibility for HS/HF. This code path is mostly unused and it does not reduces the pop noise on the output (it alters it to sound a bit different). The preferred method to reduce pop noise is to use ABE. Remove the gain ramp, and related features form the driver. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-07xen/Kconfig: fix Kconfig layoutAndrew Morton
Fit it into 80 columns so that it is readable in menuconfig. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-05-07xen/pci: don't use PCI BIOS service for configuration space accessesDavid Vrabel
The accessing PCI configuration space with the PCI BIOS32 service does not work in PV guests. On systems without MMCONFIG or where the BIOS hasn't marked the MMCONFIG region as reserved in the e820 map, the BIOS service is probed (even though direct access is preferred) and this hangs. CC: stable@kernel.org Acked-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com> [v1: Fixed compile error when CONFIG_PCI is not set] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-05-07xen/pte: Fix crashes when trying to see non-existent PGD/PMD/PUD/PTEsKonrad Rzeszutek Wilk
If I try to do "cat /sys/kernel/debug/kernel_page_tables" I end up with: BUG: unable to handle kernel paging request at ffffc7fffffff000 IP: [<ffffffff8106aa51>] ptdump_show+0x221/0x480 PGD 0 Oops: 0000 [#1] SMP CPU 0 .. snip.. RAX: 0000000000000000 RBX: ffffc00000000fff RCX: 0000000000000000 RDX: 0000800000000000 RSI: 0000000000000000 RDI: ffffc7fffffff000 which is due to the fact we are trying to access a PFN that is not accessible to us. The reason (at least in this case) was that PGD[256] is set to __HYPERVISOR_VIRT_START which was setup (by the hypervisor) to point to a read-only linear map of the MFN->PFN array. During our parsing we would get the MFN (a valid one), try to look it up in the MFN->PFN tree and find it invalid and return ~0 as PFN. Then pte_mfn_to_pfn would happilly feed that in, attach the flags and return it back to the caller. 'ptdump_show' bitshifts it and gets and invalid value that it tries to dereference. Instead of doing all of that, we detect the ~0 case and just return !_PAGE_PRESENT. This bug has been in existence .. at least until 2.6.37 (yikes!) CC: stable@kernel.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-05-07xen/apic: Return the APIC ID (and version) for CPU 0.Konrad Rzeszutek Wilk
On x86_64 on AMD machines where the first APIC_ID is not zero, we get: ACPI: LAPIC (acpi_id[0x01] lapic_id[0x10] enabled) BIOS bug: APIC version is 0 for CPU 1/0x10, fixing up to 0x10 BIOS bug: APIC version mismatch, boot CPU: 0, CPU 1: version 10 which means that when the ACPI processor driver loads and tries to parse the _Pxx states it fails to do as, as it ends up calling acpi_get_cpuid which does this: for_each_possible_cpu(i) { if (cpu_physical_id(i) == apic_id) return i; } And the bootup CPU, has not been found so it fails and returns -1 for the first CPU - which then subsequently in the loop that "acpi_processor_get_info" does results in returning an error, which means that "acpi_processor_add" failing and per_cpu(processor) is never set (and is NULL). That means that when xen-acpi-processor tries to load (much much later on) and parse the P-states it gets -ENODEV from acpi_processor_register_performance() (which tries to read the per_cpu(processor)) and fails to parse the data. Reported-by-and-Tested-by: Stefan Bader <stefan.bader@canonical.com> Suggested-by: Boris Ostrovsky <boris.ostrovsky@amd.com> [v2: Bit-shift APIC ID by 24 bits] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-05-07regulator: Actually free the regulator in devm_regulator_put()Mark Brown
It turns out that (quite surprisingly) devres_destroy() only undoes the devres mapping, it doesn't destroy the underlying resource, meaning that anything using devm_regulator_put() would leak. While we wait for the new devres_release() which does what we want to get merged open code it in devm_regulator_put(). Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2012-05-07ASoC: pxa: allocate the SSP DMA parameters in startupguoyh
Allocating the SSP DMA parameters in startup, freeing it in shutdown instead of freeing and re-allocating it in hw_params. After doing that, the logic is clear and more safe. Signed-off-by: guoyh <guoyh@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-07drivers/video/xen-fbfront.c: add missing cleanup codeJulia Lawall
The operations in the subsequent error-handling code appear to be also useful here. Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> [v1: Collapse some of the error handling functions] [v2: Fix compile warning] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-05-07drm/nouveau/i2c: resume use of i2c-algo-bit, rather than custom stackBen Skeggs
Previous issues with i2c-algo-bit have now been resolved. This is a revert of f553b79c03f0dbd52f6f03abe8233a2bef8cbd0d mostly, due to fixes in the i2c core repairing the original issue, this code isn't required and was causing regressions. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reported-by: Nick Bowler <nbowler@elliptictech.com> Tested-by: Nick Bowler <nbowler@elliptictech.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-07Merge branch 'drm-intel-fixes' of ↵Dave Airlie
git://people.freedesktop.org/~danvet/drm-intel into drm-fixes Daniel wrote: 2 little patches: - One regression fix to disable sdvo hotplug on broken hw. - One patch to upconvert the snb hang workaround from patch v1 to patch v2. * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: Do no set Stencil Cache eviction LRA w/a on gen7+ drm/i915: disable sdvo hotplug on i945g/gm
2012-05-07ALSA: hda/realtek - Add missing CD-input pin for MSI-7350 moboTakashi Iwai
Reported-by: Philipp Matthias Hahn <pmhahn@pmhahn.de> Cc: <stable@kernel.org> [v3.3+] Signed-off-by: Takashi Iwai <tiwai@suse.de>