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2012-08-13drm/radeon: do not reenable crtc after moving vram start addressJerome Glisse3-76/+2
It seems we can not update the crtc scanout address. After disabling crtc, update to base address do not take effect after crtc being reenable leading to at least frame being scanout from the old crtc base address. Disabling crtc display request lead to same behavior. So after changing the vram address if we don't keep crtc disabled we will have the GPU trying to read some random system memory address with some iommu this will broke the crtc engine and will lead to broken display and iommu error message. So to avoid this, disable crtc. For flicker less boot we will need to avoid moving the vram start address. This patch should also fix : https://bugs.freedesktop.org/show_bug.cgi?id=42373 Cc: <[email protected]> Signed-off-by: Jerome Glisse <[email protected]>
2012-08-13drm/radeon: fix bank tiling parameters on caymanAlex Deucher1-3/+11
Handle the 16 bank case. Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected]
2012-08-13drm/radeon: fix bank tiling parameters on evergreenAlex Deucher1-3/+11
Handle the 16 bank case. Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected]
2012-08-13drm/radeon: fix bank tiling parameters on SIChristian König1-4/+12
The sixteen bank case wasn't handled here, leading to GPU crashes because of userspace miscalculation. Signed-off-by: Christian König <[email protected]> Cc: [email protected] Signed-off-by: Alex Deucher <[email protected]>
2012-08-13drm/radeon: properly handle crtc powergatingAlex Deucher3-2/+17
Need to make sure the crtc is gated on before modesetting. Explicitly gate the crtc on in prepare() and set a flag so that the dpms functions don't gate it off during mode set. Noticed by sylware on IRC. Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected]
2012-08-13drm/radeon: properly handle SS overrides on TN (v2)Alex Deucher1-12/+37
The IntegratedSystemInfo table changed versions on TN. Update the SS override lookup to handle it. v2: fix copy-paste typo. Signed-off-by: Alex Deucher <[email protected]>
2012-08-13drm/radeon/dce4+: set a more reasonable cursor watermarkAlex Deucher1-2/+4
Set a more reasonable default cursor watermark. The recommended default value is 4. This should reduce urgency requests to the MC form the display hw. Signed-off-by: Alex Deucher <[email protected]>
2012-08-13drm/radeon: fix handling for ddc type 5 on combiosAlex Deucher1-21/+36
When ddc type is 5, need to look up the i2c channel in the i2c table. Signed-off-by: Alex Deucher <[email protected]>
2012-08-13spi/bcm63xx: Ensure that memory is freed only after it is no longer usedGuenter Roeck1-1/+3
The call to spi_unregister_master() in the device remove function frees device memory, and with it any device local data. However, device local data is still accessed after the call to spi_unregister_master(). Acquire a reference to the SPI device and release it after cleanup is complete to solve the problem. Signed-off-by: Guenter Roeck <[email protected]> Signed-off-by: Mark Brown <[email protected]>
2012-08-13ASoC: wm5110: Add missing input PGA routesMark Brown1-0/+12
Signed-off-by: Mark Brown <[email protected]>
2012-08-13ASoC: wm5102: Add missing input PGA routesMark Brown1-0/+9
Signed-off-by: Mark Brown <[email protected]>
2012-08-13ARM: Bring back ARMv3 IO and user access codeRussell King4-3/+816
This partially reverts 357c9c1f07d4546bc3fbc0fd1044d96b114d14ed (ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs). Although we only support StrongARM on the RiscPC, we need to keep the ARMv3 user access code for this platform because the bus does not understand half-word load/stores. Reported-by: Arnd Bergmann <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-13ALSA: hda - fix Copyright debug messageWang Xingchao1-1/+1
As spec said, 1 indicates no copyright is asserted. Signed-off-by: Wang Xingchao <[email protected]> Cc: <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2012-08-13Merge branch 'fixes-for-3.6' of ↵Linus Torvalds3-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds Pull leds fixes/revert from Bryan Wu. * 'fixes-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: leds: renesas: fix error handling Revert "leds: use led_set_brightness in led_trigger_event" leds: lp8788: Fix updating scale configuration bits
2012-08-13leds: renesas: fix error handlingArnd Bergmann1-1/+1
bfe4c041 "leds: convert Renesas TPU LED driver to devm_kzalloc() and cleanup error exit path" introduced a possible case in which r_tpu_probe calls iounmap on a wild pointer. This changes the one case that was missed in the same way as the other error paths. Without this patch, building kota2_defconfig results in: drivers/leds/leds-renesas-tpu.c: In function 'r_tpu_probe': drivers/leds/leds-renesas-tpu.c:246:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/leds/leds-renesas-tpu.c:308:17: warning: 'p' may be used uninitialized in this function [-Wuninitialized] Signed-off-by: Arnd Bergmann <[email protected]> Cc: Magnus Damm <[email protected]> Signed-off-by: Bryan Wu <[email protected]>
2012-08-13Revert "leds: use led_set_brightness in led_trigger_event"Fabio Baltieri1-1/+1
This reverts commit a0193cbee0809d65362a0767b2d50306b145b2f5. The problem with the original commit was that it caused a warning with the MMC trigger calling del_timer_sync from hard-irq context. Signed-off-by: Fabio Baltieri <[email protected]> Reported-by: Pawel Moll <[email protected]> Signed-off-by: Bryan Wu <[email protected]>
2012-08-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds36-156/+233
Pull networking changes from David Miller: "Most importantly this should cure the ipv4-mapped ipv6 socket TCP crashes some people were seeing, otherwise: 1) Fix e1000e autonegotiation handling regression, from Tushar Dave. 2) Fix TX data corruption race on e1000e down, also from Tushar Dave. 3) Fix bfin_sir IRDA driver build, from Sonic Zhang. 4) AF_PACKET mmap() tests a flag in the TX ring shared between userspace and the kernel for an internal consistency check. It really shouldn't do this to validate the kernel's own behavior because the user can corrupt it to be any value at all. From Daniel Borkmann. 5) Fix TCP metrics leak on netns dismantle, from Eric Dumazet. 6) Orphan the anonymous TCP socket from the SKB in ip_send_unicast_reply() so that the rest of the stack needn't see it. Otherwise we get selinux problems of all sorts, from Eric Dumazet. This is the best way to fix this since the socket is just a place holder for sending packets in a context where we have no real socket at all. 7) Fix TUN detach crashes, from Stanislav Kinsbursky. 8) dev_set_alias() leaks memory on krealloc() failure, from Alexey Khoroshilov. 9) FIB trie must use call_rcu() not call_rcu_bh(), because this code is not universally invoked from software interrupts. From Eric Dumazet. 10) PPTP looks up ipv4 routes with the wrong network namespace, fix from Gao Feng." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (33 commits) bnx2x: Fix compiler warnings af_packet: remove BUG statement in tpacket_destruct_skb macvtap: rcu_dereference outside read-lock section codel: refine one condition to avoid a nul rec_inv_sqrt ixgbe: add missing braces ipv4: fix ip_send_skb() net: tcp: ipv6_mapped needs sk_rx_dst_set method ipv4: tcp: unicast_sock should not land outside of TCP stack bnx2x: Fix recovery flow cleanup during probe bnx2x: fix unload previous driver flow when flr-capable tun: don't zeroize sock->file on detach igb: Fix register defines for all non-82575 hardware e1000e: fix panic while dumping packets on Tx hang with IOMMU igb: fix panic while dumping packets on Tx hang with IOMMU tcp: must free metrics at net dismantle net/stmmac: mark probe function as __devinit lpc_eth: remove obsolete ifdefs net/core: Fix potential memory leak in dev_set_alias() cdc-phonet: Don't leak in usbpn_open batman-adv: Fix mem leak in the batadv_tt_local_event() function ...
2012-08-13Merge branch 'for-linus' of ↵Linus Torvalds5-0/+1740
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull tcm_vhost level target fabric driver from Nicholas Bellinger: "Here is the PULL request for the initial merge of tcm_vhost based on RFC-v5 code with MST's ACK appended to the initial merge commit." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: tcm_vhost: Initial merge for vhost level target fabric driver
2012-08-13dma: tegra: enable/disable dma clockLaxman Dewangan1-1/+17
Enable the DMA clock when allocating channel and disable clock when freeing channels. Signed-off-by: Laxman Dewangan <[email protected]> Signed-off-by: Vinod Koul <[email protected]>
2012-08-12bnx2x: Fix compiler warningsJoren Van Onder1-1/+1
Fix the following compiler warnings: - drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:2908:3: warning: comparison of distinct pointer types lacks a cast [enabled by default] - drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c:1709:7: warning: comparison of distinct pointer types lacks a cast [enabled by default] Signed-off-by: Joren Van Onder <[email protected]> Acked-By: Yuval Mintz <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-08-12af_packet: remove BUG statement in tpacket_destruct_skb[email protected]1-1/+0
Here's a quote of the comment about the BUG macro from asm-generic/bug.h: Don't use BUG() or BUG_ON() unless there's really no way out; one example might be detecting data structure corruption in the middle of an operation that can't be backed out of. If the (sub)system can somehow continue operating, perhaps with reduced functionality, it's probably not BUG-worthy. If you're tempted to BUG(), think again: is completely giving up really the *only* solution? There are usually better options, where users don't need to reboot ASAP and can mostly shut down cleanly. In our case, the status flag of a ring buffer slot is managed from both sides, the kernel space and the user space. This means that even though the kernel side might work as expected, the user space screws up and changes this flag right between the send(2) is triggered when the flag is changed to TP_STATUS_SENDING and a given skb is destructed after some time. Then, this will hit the BUG macro. As David suggested, the best solution is to simply remove this statement since it cannot be used for kernel side internal consistency checks. I've tested it and the system still behaves /stable/ in this case, so in accordance with the above comment, we should rather remove it. Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-08-12macvtap: rcu_dereference outside read-lock sectionDenis Efremov1-1/+2
rcu_dereference occurs in update section. Replacement by rcu_dereference_protected in order to prevent lockdep complaint. Found by Linux Driver Verification project (linuxtesting.org) Signed-off-by: Denis Efremov <[email protected]> Acked-by: Michael S. Tsirkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-08-12Merge tag 'gpio-fixes-v3.6-rc1' of ↵Linus Torvalds10-14/+67
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull gpio fixes from Linus Walleij: - Fix a resource leak in the SCH driver - Fix the register address calculation in the MSIC driver - Fix the PXA driver's devicetree functions - Delete redundant shadow variable leftovers in the MXC driver - Specify the GPIO base for the device tree probe in the MXC driver - Add a modalias for the i.MX driver - Fix off-by-one bug in the Samsung driver - Fix erroneous errorpath in the Langwell driver * tag 'gpio-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: drivers/gpio/gpio-langwell.c: fix error return code gpio: samsung: Fix off-by-one bug in gpio addresses ARM: dts: imx: add alias for gpio gpio/mxc: specify gpio base for device tree probe gpio/mxc: remove redundant shadow variables initialization GPIO: gpio-pxa: fix devicetree functions gpio: msic: Fix calculating register address in msic_gpio_to_oreg() gpio-sch: Fix leak of resource
2012-08-12Merge branch 'for-linus' of ↵Linus Torvalds3-9/+48
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull a security subsystem fix from James Morris "This fixes an issue in the Yama LSM" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: Yama: higher restrictions should block PTRACE_TRACEME
2012-08-12Merge tag 'pm-for-3.6-rc2' of ↵Linus Torvalds27-38/+71
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fixes from Rafael J. Wysocki: - Fix for two recent regressions in the generic PM domains framework. - Revert of a commit that introduced a resume regression and is conceptually incorrect in my opinion. - Fix for a return value in pcc-cpufreq.c from Julia Lawall. - RTC wakeup signaling fix from Neil Brown. - Suppression of compiler warnings for CONFIG_PM_SLEEP unset in ACPI, platform/x86 and TPM drivers. * tag 'pm-for-3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: tpm_tis / PM: Fix unused function warning for CONFIG_PM_SLEEP platform / x86 / PM: Fix unused function warnings for CONFIG_PM_SLEEP ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP Revert "NMI watchdog: fix for lockup detector breakage on resume" PM: Make dev_pm_get_subsys_data() always return 0 on success drivers/cpufreq/pcc-cpufreq.c: fix error return code RTC: Avoid races between RTC alarm wakeup and suspend.
2012-08-12Merge tag 'fixes-for-linus' of ↵Linus Torvalds36-167/+160
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc bug fixes from Arnd Bergmann: "These are a bunch of bug fixes that came in after the merge window and one update for the MAINTAINERS file. The largest part of the fixes are patches that address bugs found by building all the ARM defconfig files. There are a lot more warnings that we have patches for, but the others are either still under discussion or are harmless and do not cause actual problems besides making the build slightly noisy." * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (30 commits) ARM: davinci: remove broken ntosd2_init_i2c ARM: s3c24xx: enable CONFIG_BUG for tct_hammer omap-rng: fix use of SIMPLE_DEV_PM_OPS spi/s3c64xx: improve error handling mtd/omap2: fix dmaengine_slave_config error handling gpio: em: do not discard em_gio_irq_domain_cleanup ARM: exynos: exynos_pm_add_dev_to_genpd may be unused ARM: imx: gpmi-nand depends on mxs-dma ARM: integrator: include <linux/export.h> ARM: s3c24xx: use new PWM driver ARM: sa1100: include linux/io.h in hackkit leds code Input: eeti_ts: pass gpio value instead of IRQ ARM: pxa: remove irq_to_gpio from ezx-pcap driver ARM: tegra: more regulator fixes for Harmony usb/ohci-omap: remove unused variable mfd/asic3: fix asic3_mfd_probe return value ARM: kirkwood: fix typo in Makefile.boot i.MX27: Fix emma-prp and csi clocks. ARM: integrator: use clk_prepare_enable() for timer MAINTAINERS: update entry for Linus Walleij ...
2012-08-12Merge branch 'fixes-for-linus-for-3.6-rc2' of ↵Linus Torvalds1-6/+6
git://git.linaro.org/people/mszyprowski/linux-dma-mapping Pull three dma-mapping fixes from Marek Szyprowski. * 'fixes-for-linus-for-3.6-rc2' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: ARM: dma-mapping: fix incorrect freeing of atomic allocations ARM: dma-mapping: fix atomic allocation alignment ARM: mm: fix MMU mapping of CMA regions
2012-08-12Merge branch 'for-linus-3.6' of ↵Linus Torvalds1-5/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs merge fix from Chris Mason: "This fixes a merge error in rc1. The calls to mnt_want_write should have been removed." * 'for-linus-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: remove mnt_want_write call in btrfs_mksubvol
2012-08-12printk: Fix calculation of length used to discard recordsJeff Mahoney1-0/+2
While tracking down a weird buffer overflow issue in a program that looked to be sane, I started double checking the length returned by syslog(SYSLOG_ACTION_READ_ALL, ...) to make sure it wasn't overflowing the buffer. Sure enough, it was. I saw this in strace: 11339 syslog(SYSLOG_ACTION_READ_ALL, "<5>[244017.708129] REISERFS (dev"..., 8192) = 8279 It turns out that the loops that calculate how much space the entries will take when they're copied don't include the newlines and prefixes that will be included in the final output since prev flags is passed as zero. This patch properly accounts for it and fixes the overflow. CC: [email protected] Signed-off-by: Jeff Mahoney <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2012-08-12[media] radio-shark2: Only compile led support when CONFIG_LED_CLASS is setHans de Goede1-49/+73
Signed-off-by: Hans de Goede <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-12[media] radio-shark: Only compile led support when CONFIG_LED_CLASS is setHans de Goede1-56/+79
Signed-off-by: Hans de Goede <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-12[media] radio-shark*: Call cancel_work_sync from disconnect rather then releaseHans de Goede2-21/+4
This removes the need for shark_led_work to take the v4l2 lock. Signed-off-by: Hans de Goede <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-12[media] radio-shark*: Remove work-around for dangling pointer in usb intfdataHans de Goede2-18/+0
Recent kernels properly clear the usb intfdata pointer when another driver fails to bind (in the radio-shark* case the usbhid driver would try to bind first. Signed-off-by: Hans de Goede <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-12[media] Add USB dependency for IguanaWorks USB IR TransceiverGuenter Roeck1-0/+1
This patch fixes the error drivers/usb/core/hub.c:3753: undefined reference to `usb_speed_string' seen in various random configurations. Cc: Sean Young <[email protected]> Cc: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Guenter Roeck <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-11[media] Add missing logging for rangelow/high of hwseekHans Verkuil1-2/+4
struct v4l2_hw_freq_seek has two new fields that weren't printed in the logging function. Added. Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-11[media] VIDIOC_ENUM_FREQ_BANDS fixHans Verkuil1-0/+4
When VIDIOC_ENUM_FREQ_BANDS is called for a driver that doesn't supply an enum_freq_bands op, then it will fall back to reporting a single freq band based on information from g_tuner or g_modulator. Due to a bug this is an infinite list since the index field wasn't tested. This patch fixes this and returns -EINVAL if index != 0. Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-11[media] mem2mem_testdev: fix querycap regressionHans Verkuil1-1/+1
Trival but important patch. Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-11drm/i915: ignore eDP bpc settings from vbtDaniel Vetter1-11/+0
This has originally been introduced to not oversubscribe the dp links in commit 885a5fb5b120a5c7e0b3baad7b0feb5a89f76c18 Author: Zhenyu Wang <[email protected]> Date: Tue Jan 12 05:38:31 2010 +0800 drm/i915: fix pixel color depth setting on eDP Since then we've fixed up the dp link bandwidth calculation code and should now automatically fall back to 6bpc dithering. So this is unnecessary. Furthermore it seems to break the new MacbookPro with retina display, hence let's just rip this out. Reported-by: Benoit Gschwind <[email protected]> Cc: Benoit Gschwind <[email protected]> Cc: Francois Rigaut <[email protected]> Cc: Greg KH <[email protected]> Cc: [email protected] Tested-by: Benoit Gschwind <[email protected]> Tested-by: Bernhard Froemel <froemel at vmars tuwien.ac.at> Signed-off-by: Daniel Vetter <[email protected]> -- Testing feedback highgly welcome, and thanks for Benoit for finding out that the bpc computations are busted. -Daniel
2012-08-11drm/i915: Fix blank panel at reopening lidTakashi Iwai1-4/+9
When you reopen the lid on a laptop with PCH, the panel suddenly goes blank sometimes. It seems because BLC_PWM_CPU_CTL register is cleared to zero when BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1 registers are enabled. This patch fixes the problem by moving the call of the function setting BLC_PWM_CPU_CTL after enabling other two registers. Reported-and-tested-by: Hugh Dickins <[email protected]> Signed-off-by: Takashi Iwai <[email protected]> Signed-off-by: Daniel Vetter <[email protected]>
2012-08-11[media] si470x: v4l2-compliance fixesHans Verkuil3-3/+7
Just a few fixes for problems found after updating v4l2-compliance to check the frequency band enumeration. Note that the i2c driver doesn't fill in bus_info, but since I can't test that driver I've decided not to fix that. Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-11[media] DocBook: Remove a spurious characterHans Verkuil1-1/+1
Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-11[media] uvcvideo: Reset the bytesused field when recycling an erroneous bufferJayakrishnan Memana1-0/+1
Buffers marked as erroneous are recycled immediately by the driver if the nodrop module parameter isn't set. The buffer payload size is reset to 0, but the buffer bytesused field isn't. This results in the buffer being immediately considered as complete, leading to an infinite loop in interrupt context. Fix the problem by resetting the bytesused field when recycling the buffer. Cc: <[email protected]> Signed-off-by: Jayakrishnan Memana <[email protected]> Signed-off-by: Laurent Pinchart <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
2012-08-11ARM: 7489/1: errata: fix workaround for erratum #720789 on UP systemsWill Deacon1-3/+3
Commit 5a783cbc4836 ("ARM: 7478/1: errata: extend workaround for erratum #720789") added workarounds for erratum #720789 to the range TLB invalidation functions with the observation that the erratum only affects SMP platforms. However, when running an SMP_ON_UP kernel on a uniprocessor platform we must take care to preserve the ASID as the workaround is not required. This patch ensures that we don't set the ASID to 0 when flushing the TLB on such a system, preserving the original behaviour with the workaround disabled. Cc: <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-11ARM: 7488/1: mm: use 5 bits for swapfile type encodingWill Deacon1-3/+3
Page migration encodes the pfn in the offset field of a swp_entry_t. For LPAE, we support physical addresses of up to 36 bits (due to sparsemem limitations with the size of page flags), requiring 24 bits to represent a pfn. A further 3 bits are used to encode a swp_entry into a pte, leaving 5 bits for the type field. Furthermore, the core code defines MAX_SWAPFILES_SHIFT as 5, so the additional type bit does not get used. This patch reduces the width of the type field to 5 bits, allowing us to create up to 31 swapfiles of 64GB each. Cc: <[email protected]> Reviewed-by: Catalin Marinas <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-11ARM: 7487/1: mm: avoid setting nG bit for user mappings that aren't presentWill Deacon2-18/+18
Swap entries are encoding in ptes such that !pte_present(pte) and pte_file(pte). The remaining bits of the descriptor are used to identify the swapfile and offset within it to the swap entry. When writing such a pte for a user virtual address, set_pte_at unconditionally sets the nG bit, which (in the case of LPAE) will corrupt the swapfile offset and lead to a BUG: [ 140.494067] swap_free: Unused swap offset entry 000763b4 [ 140.509989] BUG: Bad page map in process rs:main Q:Reg pte:0ec76800 pmd:8f92e003 This patch fixes the problem by only setting the nG bit for user mappings that are actually present. Cc: <[email protected]> Reviewed-by: Catalin Marinas <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-11ARM: 7486/1: sched_clock: update epoch_cyc on resumeColin Cross2-0/+26
Many clocks that are used to provide sched_clock will reset during suspend. If read_sched_clock returns 0 after suspend, sched_clock will appear to jump forward. This patch resets cd.epoch_cyc to the current value of read_sched_clock during resume, which causes sched_clock() just after suspend to return the same value as sched_clock() just before suspend. In addition, during the window where epoch_ns has been updated before suspend, but epoch_cyc has not been updated after suspend, it is unknown whether the clock has reset or not, and sched_clock() could return a bogus value. Add a suspended flag, and return the pre-suspend epoch_ns value during this period. The new behavior is triggered by calling setup_sched_clock_needs_suspend instead of setup_sched_clock. Signed-off-by: Colin Cross <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-11ARM: 7484/1: Don't enable GENERIC_LOCKBREAK with ticket spinlocksStephen Boyd1-5/+0
Now that ARM has implemented its spinlocks with tickets we don't need to use the generic lockbreak algorithm. Remove the Kconfig from ARM so that we use the arch_spin_is_contended() definition from the asm header. This also saves a word in each lock because we don't need the break_lock member anymore. Signed-off-by: Stephen Boyd <[email protected]> Acked-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-11ARM: 7483/1: vfp: only advertise VFPv4 in hwcaps if CONFIG_VFPv3 is enabledWill Deacon1-0/+2
VFPv4 support depends on the VFPv3 context save/restore code, so only advertise support in the hwcaps if the kernel can actually handle it. Cc: <[email protected]> # 3.1+ Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-11ARM: 7482/1: topology: fix section mismatch warning for init_cpu_topologyVenkatraman Sathiyamoorthy1-1/+1
Get rid of this warning.. arch/arm/kernel/built-in.o(.text+0xac78): Section mismatch in reference from the function init_cpu_topology() to the function .init.text:parse_dt_topology() The function init_cpu_topology() references the function __init parse_dt_topology(). This is often because init_cpu_topology lacks a __init annotation or the annotation of parse_dt_topology is wrong. Signed-off-by: Venkatraman S <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-08-10codel: refine one condition to avoid a nul rec_inv_sqrtEric Dumazet1-2/+6
One condition before codel_Newton_step() was not good if we never left the dropping state for a flow. As a result rec_inv_sqrt was 0, instead of the ~0 initial value. codel control law was then set to a very aggressive mode, dropping many packets before reaching 'target' and recovering from this problem. To keep codel_vars_init() as efficient as possible, refine the condition to make sure rec_inv_sqrt initial value is correct Many thanks to Anton Mich for discovering the issue and suggesting a fix. Reported-by: Anton Mich <[email protected]> Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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