1. 20 Jan, 2015 3 commits
    • Rui Wang's avatar
      drm: fb helper should avoid sleeping in panic context · 9aa609e1
      Rui Wang authored
      There are still some places in the fb helper that need to avoid
      sleeping in panic context. Here's an example:
      
      [   65.615496] bad: scheduling from the idle thread!
      [   65.620747] CPU: 92 PID: 0 Comm: swapper/92 Tainted: G   M        E  3.18.0-rc4-7-default+ #20
      
      [   65.630364] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS
      BRHSXSD1.86B.0056.R01.1409242327 09/24/2014
      [   65.641923]  ffff88087f693d80 ffff88087f689878 ffffffff81566db9 0000000000000000
      [   65.650226]  ffff88087f693d80 ffff88087f689898 ffffffff810871ff ffff88046eb3e0d0
      [   65.658527]  ffff88087f693d80 ffff88087f6898c8 ffffffff8107c1fa 000000017f6898b8
      [   65.666830] Call Trace:
      [   65.669557]  <#MC>  [<ffffffff81566db9>] dump_stack+0x46/0x58
      [   65.675994]  [<ffffffff810871ff>] dequeue_task_idle+0x2f/0x40
      [   65.682412]  [<ffffffff8107c1fa>] dequeue_task+0x5a/0x80
      [   65.688345]  [<ffffffff810804f3>] deactivate_task+0x23/0x30
      [   65.694569]  [<ffffffff81569050>] __schedule+0x580/0x7f0
      [   65.700502]  [<ffffffff81569739>] schedule_preempt_disabled+0x29/0x70
      [   65.707696]  [<ffffffff8156abb6>] __ww_mutex_lock_slowpath+0xb8/0x162
      [   65.714891]  [<ffffffff8156acb3>] __ww_mutex_lock+0x53/0x85
      [   65.721125]  [<ffffffffa00b3a5d>] drm_modeset_lock+0x3d/0x110 [drm]
      [   65.728132]  [<ffffffffa00b3c2a>] __drm_modeset_lock_all+0x8a/0x120 [drm]
      [   65.735721]  [<ffffffffa00b3cd0>] drm_modeset_lock_all+0x10/0x30 [drm]
      [   65.743015]  [<ffffffffa01af8bf>] drm_fb_helper_pan_display+0x2f/0xf0 [drm_kms_helper]
      [   65.751857]  [<ffffffff8132bd21>] fb_pan_display+0xd1/0x1a0
      [   65.758081]  [<ffffffff81326010>] bit_update_start+0x20/0x50
      [   65.764400]  [<ffffffff813259f2>] fbcon_switch+0x3a2/0x550
      [   65.770528]  [<ffffffff813a01c9>] redraw_screen+0x189/0x240
      [   65.776750]  [<ffffffff81322f8a>] fbcon_blank+0x20a/0x2d0
      [   65.782778]  [<ffffffff8137d359>] ? erst_writer+0x209/0x330
      [   65.789002]  [<ffffffff810ba2f3>] ? internal_add_timer+0x63/0x80
      [   65.795710]  [<ffffffff810bc137>] ? mod_timer+0x127/0x1e0
      [   65.801740]  [<ffffffff813a0cd8>] do_unblank_screen+0xa8/0x1d0
      [   65.808255]  [<ffffffff813a0e10>] unblank_screen+0x10/0x20
      [   65.814381]  [<ffffffff812ca0d9>] bust_spinlocks+0x19/0x40
      [   65.820508]  [<ffffffff81561ca7>] panic+0x106/0x1f5
      [   65.825955]  [<ffffffff8102336c>] mce_panic+0x2ac/0x2e0
      [   65.831789]  [<ffffffff812c796a>] ? delay_tsc+0x4a/0x80
      [   65.837625]  [<ffffffff81024e1f>] do_machine_check+0xbaf/0xbf0
      [   65.844138]  [<ffffffff813365d7>] ? intel_idle+0xc7/0x150
      [   65.850166]  [<ffffffff8156f03f>] machine_check+0x1f/0x30
      [   65.856195]  [<ffffffff813365d7>] ? intel_idle+0xc7/0x150
      [   65.862222]  <<EOE>>  [<ffffffff814283d5>] cpuidle_enter_state+0x55/0x170
      [   65.869823]  [<ffffffff814285a7>] cpuidle_enter+0x17/0x20
      [   65.875852]  [<ffffffff81097b08>] cpu_startup_entry+0x2d8/0x370
      [   65.882467]  [<ffffffff8102fe29>] start_secondary+0x159/0x180
      
      There's __drm_modeset_lock_all() which Daniel Vetter introduced for this
      purpose. We can leverage that without reinventing anything. This patch
      works with the latest kernel.
      Reviewed-by: default avatarRob Clark <robdclark@gmail.com>
      Tested-by: default avatarTony Luck <tony.luck@intel.com>
      Signed-off-by: default avatarRui Wang <rui.y.wang@intel.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      9aa609e1
    • Dave Airlie's avatar
      Merge branch 'exynos-drm-fixes' of... · e902027a
      Dave Airlie authored
      Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
      
      This pull request includes below fixups,
      
      - Remove duplicated machine checking.
        . It seems that this code was added when you merged 'v3.18-rc7' into
          drm-next. commit id : e8115e79
      - Fix hdmiphy reset.
        . Exynos hdmi has two interfaces to control hdmyphy, one is I2C, other
          is APB bus - memory mapped I/O. So this patch makes hdmiphy reset
          to be done according to interfaces, I2C or APB bus.
      - And add some exception codes.
      
      * 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
        drm/exynos: fix warning of vblank reference count
        drm/exynos: remove unnecessary runtime pm operations
        drm/exynos: fix reset codes for memory mapped hdmi phy
        drm/exynos: remove the redundant machine checking code
      e902027a
    • Dave Airlie's avatar
      Merge branch 'drm-fixes-3.19' of git://people.freedesktop.org/~agd5f/linux into drm-fixes · b46ce98d
      Dave Airlie authored
      Some radeon fixes for 3.19:
          - GPUVM stability fixes
          - SI dpm quirks
          - Regression fixes
      
      * 'drm-fixes-3.19' of git://people.freedesktop.org/~agd5f/linux:
        drm/radeon: use rv515_ring_start on r5xx
        drm/radeon: add si dpm quirk list
        drm/radeon: don't print error on -ERESTARTSYS
        drm/radeon: add a dpm quirk list
        drm/radeon: fix VM flush on CIK (v3)
        drm/radeon: fix VM flush on SI (v3)
        drm/radeon: fix VM flush on cayman/aruba (v3)
      b46ce98d
  2. 18 Jan, 2015 7 commits
    • Joonyoung Shim's avatar
      drm/exynos: fix warning of vblank reference count · 7c4c5584
      Joonyoung Shim authored
      Prevented re-enabling the vblank interrupt by drm_vblank_off and
      drm_vblank_get from mixer_wait_for_vblank returns error after
      drm_vblank_off. We get below warnings without this error handling
      because vblank reference count is mismatched by above sequence.
      
      setting mode 1920x1080-60Hz@XR24 on connectors 16, crtc 13
      [   19.900793] ------------[ cut here ]------------
      [   19.903959] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/drm_irq.c:1072 exynos_drm_crtc_finish_pageflip+0xac/0xdc()
      [   19.914076] Modules linked in:
      [   19.917116] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.19.0-rc4-00040-g3d729789-dirty #46
      [   19.925342] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
      [   19.931437] [<c0014430>] (unwind_backtrace) from [<c001158c>] (show_stack+0x10/0x14)
      [   19.939131] [<c001158c>] (show_stack) from [<c04cdd50>] (dump_stack+0x84/0xc4)
      [   19.946329] [<c04cdd50>] (dump_stack) from [<c00226f4>] (warn_slowpath_common+0x80/0xb0)
      [   19.954382] [<c00226f4>] (warn_slowpath_common) from [<c00227c0>] (warn_slowpath_null+0x1c/0x24)
      [   19.963132] [<c00227c0>] (warn_slowpath_null) from [<c02c20cc>] (exynos_drm_crtc_finish_pageflip+0xac/0xdc)
      [   19.972841] [<c02c20cc>] (exynos_drm_crtc_finish_pageflip) from [<c02cb7ec>] (mixer_irq_handler+0xdc/0x104)
      [   19.982546] [<c02cb7ec>] (mixer_irq_handler) from [<c005c904>] (handle_irq_event_percpu+0x78/0x134)
      [   19.991555] [<c005c904>] (handle_irq_event_percpu) from [<c005c9fc>] (handle_irq_event+0x3c/0x5c)
      [   20.000395] [<c005c9fc>] (handle_irq_event) from [<c005f384>] (handle_fasteoi_irq+0xe0/0x1ac)
      [   20.008885] [<c005f384>] (handle_fasteoi_irq) from [<c005bf88>] (generic_handle_irq+0x2c/0x3c)
      [   20.017463] [<c005bf88>] (generic_handle_irq) from [<c005c254>] (__handle_domain_irq+0x7c/0xec)
      [   20.026128] [<c005c254>] (__handle_domain_irq) from [<c0008698>] (gic_handle_irq+0x30/0x68)
      [   20.034449] [<c0008698>] (gic_handle_irq) from [<c00120c0>] (__irq_svc+0x40/0x74)
      [   20.041893] Exception stack(0xc06fff68 to 0xc06fffb0)
      [   20.046923] ff60:                   00000000 00000000 000052f6 c001b460 c06fe000 c07064e8
      [   20.055070] ff80: c04d743c c07392a2 c0739440 c06da340 ef7fca80 00000000 01000000 c06fffb0
      [   20.063212] ffa0: c000f24c c000f250 60000013 ffffffff
      [   20.068245] [<c00120c0>] (__irq_svc) from [<c000f250>] (arch_cpu_idle+0x38/0x3c)
      [   20.075611] [<c000f250>] (arch_cpu_idle) from [<c0050948>] (cpu_startup_entry+0x108/0x16c)
      [   20.083846] [<c0050948>] (cpu_startup_entry) from [<c06aec5c>] (start_kernel+0x3a0/0x3ac)
      [   20.091980] ---[ end trace 2c76ee0500489d1b ]---
      Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      7c4c5584
    • Joonyoung Shim's avatar
      drm/exynos: remove unnecessary runtime pm operations · bd508666
      Joonyoung Shim authored
      In booting, we can see a below message.
      
      [    3.241728] exynos-mixer 14450000.mixer: Unbalanced pm_runtime_enable!
      
      Already pm_runtime_enable is called by probe function. Remove
      pm_runtime_enable/disable from mixer_bind and mixer_unbind.
      Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      bd508666
    • Joonyoung Shim's avatar
      drm/exynos: fix reset codes for memory mapped hdmi phy · 265134a0
      Joonyoung Shim authored
      This fixes reset codes to support memory mapped hdmi phy as well as hdmi
      phy dedicated i2c lines.
      Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      265134a0
    • Linus Torvalds's avatar
      Linux 3.19-rc5 · ec6f34e5
      Linus Torvalds authored
      ec6f34e5
    • Linus Torvalds's avatar
      Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · d0ac5d8e
      Linus Torvalds authored
      Pull ARM SoC fixes from Olof Johansson:
       "We've been sitting on our fixes branch for a while, so this batch is
        unfortunately on the large side.
      
        A lot of these are tweaks and fixes to device trees, fixing various
        bugs around clocks, reg ranges, etc.  There's also a few defconfig
        updates (which are on the late side, no more of those).
      
        All in all the diffstat is bigger than ideal at this time, but nothing
        in here seems particularly risky"
      
      * tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (31 commits)
        reset: sunxi: fix spinlock initialization
        ARM: dts: disable CCI on exynos5420 based arndale-octa
        drivers: bus: check cci device tree node status
        ARM: rockchip: disable jtag/sdmmc autoswitching on rk3288
        ARM: nomadik: fix up leftover device tree pins
        ARM: at91: board-dt-sama5: add phy_fixup to override NAND_Tree
        ARM: at91/dt: sam9263: Add missing clocks to lcdc node
        ARM: at91: sama5d3: dt: correct the sound route
        ARM: at91/dt: sama5d4: fix the timer reg length
        ARM: exynos_defconfig: Enable LM90 driver
        ARM: exynos_defconfig: Enable options for display panel support
        arm: dts: Use pmu_system_controller phandle for dp phy
        ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
        ARM: dts: berlin: correct BG2Q's SM GPIO location.
        ARM: dts: berlin: add broken-cd and set bus width for eMMC in Marvell DMP DT
        ARM: dts: berlin: fix io clk and add missing core clk for BG2Q sdhci2 host
        ARM: dts: Revert disabling of smc91x for n900
        ARM: dts: imx51-babbage: Fix ULPI PHY reset modelling
        ARM: dts: dra7-evm: fix qspi device tree partition size
        ARM: omap2plus_defconfig: use CONFIG_CPUFREQ_DT
        ...
      d0ac5d8e
    • Linus Torvalds's avatar
      Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux · 12ba8571
      Linus Torvalds authored
      Pull clock driver fixes from Mike Turquette:
       "Small number of fixes for clock drivers and a single null pointer
        dereference fix in the framework core code.
      
        The driver fixes vary from fixing section mismatch warnings to
        preventing machines from hanging (and preventing developers from
        crying)"
      
      * tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux:
        clk: fix possible null pointer dereference
        Revert "clk: ppc-corenet: Fix Section mismatch warning"
        clk: rockchip: fix deadlock possibility in cpuclk
        clk: berlin: bg2q: remove non-exist "smemc" gate clock
        clk: at91: keep slow clk enabled to prevent system hang
        clk: rockchip: fix rk3288 cpuclk core dividers
        clk: rockchip: fix rk3066 pll lock bit location
        clk: rockchip: Fix clock gate for rk3188 hclk_emem_peri
        clk: rockchip: add CLK_IGNORE_UNUSED flag to fix rk3066/rk3188 USB Host
      12ba8571
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 901b2082
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "This is one fix for a Multiqueue sleeping in invalid context problem
        and a MAINTAINER file update for Qlogic"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: ->queue_rq can't sleep
        MAINTAINERS: Update maintainer list for qla4xxx
      901b2082
  3. 17 Jan, 2015 18 commits
  4. 16 Jan, 2015 12 commits