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2014-08-05Merge tag 'v3.16' into drm-nextDave Airlie
Linux 3.16 backmerge requested by i915, nouveau and radeon authors Conflicts: drivers/gpu/drm/i915/i915_gem_render_state.c drivers/gpu/drm/i915/intel_drv.h
2014-08-04Merge tag 'drm-intel-next-2014-07-25-merged' of ↵Dave Airlie
git://anongit.freedesktop.org/drm-intel into drm-next Final feature pull for 3.17. drm-intel-next-2014-07-25: - Ditch UMS support (well just the config option for now) - Prep work for future platforms (Sonika Jindal, Damien) - runtime pm/soix fixes (Paulo, Jesse) - psr tracking improvements, locking fixes, now enabled by default! - rps fixes for chv (Deepak, Ville) - drm core patches for rotation support (Ville, Sagar Kamble) - the i915 parts unfortunately didn't make it yet - userptr fixes (Chris) - minimum backlight brightness (Jani), acked long ago by Matthew Garret on irc - I've forgotten about this patch :( QA is a bit unhappy about the DP MST stuff since it broke hpd testing a bit, but otherwise looks sane. I've backmerged drm-next to resolve conflicts with the mst stuff, which means the new tag itself doesn't contain the overview as usual. * tag 'drm-intel-next-2014-07-25-merged' of git://anongit.freedesktop.org/drm-intel: (75 commits) drm/i915/userptr: Keep spin_lock/unlock in the same block drm/i915: Allow overlapping userptr objects drm/i915: Ditch UMS config option drm/i915: respect the VBT minimum backlight brightness drm/i915: extract backlight minimum brightness from VBT drm/i915: Replace HAS_PCH_SPLIT which incorrectly lets some platforms in drm/i915: Returning from increase/decrease of pllclock when invalid drm/i915: Setting legacy palette correctly for different platforms drm/i915: Avoid incorrect returning for some platforms drm/i915: Writing proper check for reading of pipe status reg drm/i915: Returning the right VGA control reg for platforms drm/i915: Allowing changing of wm latencies for valid platforms drm/i915: Adding HAS_GMCH_DISPLAY macro drm/i915: Fix possible overflow when recording semaphore states. drm/i915: Do not unmap object unless no other VMAs reference it drm/i915: remove plane/cursor/pipe assertions from intel_crtc_disable drm/i915: Reorder ctx unref on ppgtt cleanup drm/i915/error: Check the potential ctx obj's vm drm/i915: Fix printing proper min/min/rpe values in debugfs drm/i915: BDW can also detect unclaimed registers ...
2014-08-04drm: close race in connector registration (v2)Dave Airlie
Daniel pointed out with hotplug that userspace could be trying to oops us as root for lols, and that to be correct we shouldn't register the object with the idr before we have fully set the connector object up. His proposed solution was a lot more life changing, this seemed like a simpler proposition to me, get the connector object id from the idr, but don't register the object until the drm_connector_register callback. The open question is whether the drm_mode_object_register needs a bigger lock than just the idr one, but I can't see why it would, but I can be locking challenged. v2: fix bool noreg into sane - add comment. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-08-04drm/i915: only hook up hpd pulse for DP outputsChris Wilson
On HSW+, the digital encoders are shared between HDMI and DP outputs, with one encoder masquerading as both. The VBT should tell us if we need to have DP or HDMI support on a particular port, but if we don't have DP support and we enable the DP hpd pulse handler then we cause an oops. Don't hook up the DP hpd handling if we don't have a DP port. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81856 Reported-by: Intel QA Team. Signed-off-by: Dave Airlie <airlied@redhat.com> # v1 [ickle: Fix the error handling after a malloc failure] Reviewed-by: Dave Airlie <airlied@redhat.com> Cc: Paulo Zanoni <przanoni@gmail.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-08-04Merge branch 'exynos-drm-next' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next This pull request includes i80 interface support, module auto-loading ipp consolidation, and trivail fixups and cleanups. Summary: - Add i80 interface support. For this, we added some features to Exynos drm framework, which don't affect any other SoC and common framework because they are specific to Exynos drm. - Add module auto-loading support. For this, sub drivers of Exynos drm exports their of match tables to userspace. This allows modules to be loaded automatically based on devicetree information - Consolidate ipp driver. This patch just just includes cleanups and a littl bit refactoring codes. If there is any problem, please kindly let me know. * 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: (38 commits) drm/exynos: g2d: let exynos_g2d_get_ver_ioctl fail drm/exynos: g2d: make ioctls more robust drm/exynos: hdmi: add null check for hdmiphy_port drm/exynos: control blending of mixer graphic layer 0 drm/exynos: Add MODULE_DEVICE_TABLE entries for various components Subject: Revert "drm/exynos: remove MODULE_DEVICE_TABLE definitions" Subject: Revert "drm/exynos: fix module build error" drm/exynos/ipp: simplify ipp_find_driver drm/exynos/ipp: simplify ipp_create_id drm/exynos/ipp: remove redundant messages drm/exynos/ipp: simplify ipp_find_obj drm/exynos/ipp: remove useless registration checks drm/exynos/ipp: simplify memory check function drm/exynos/ipp: remove incorrect checks of list_first_entry result drm/exynos/ipp: remove temporary variable drm/exynos/ipp: correct address type drm/exynos/ipp: remove struct exynos_drm_ipp_private drm/exynos/ipp: remove unused field from exynos_drm_ipp_private drm/exynos/ipp: remove type casting drm/exynos: g2d: add exynos4212 as a compatible device. ...
2014-08-04drm/exynos: g2d: let exynos_g2d_get_ver_ioctl failTobias Jakobi
Currently the DRM_IOCTL_EXYNOS_G2D_GET_VER ioctl always succeeds, even if no G2D support is available. Let the ioctl fail when this is the case, so that userspace can accurately probe for G2D support. This also fixes the exynos tests in libdrm. There 'g2d_init' doesn't fail when G2D is absent, leading to a segfault later. Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: INki Dae <inki.dae@samsung.com>
2014-08-04drm/exynos: g2d: make ioctls more robustTobias Jakobi
Both exynos_g2d_set_cmdlist_ioctl and exynos_g2d_exec_ioctl don't check if the G2D was succesfully probe. If that is not the case, then g2d_priv is just NULL and extracting 'dev' from it in the next step is going to produce a kernel oops. Add proper checks and return ENODEV if the G2D is not available. Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: INki Dae <inki.dae@samsung.com>
2014-08-04drm/exynos: hdmi: add null check for hdmiphy_portSeung-Woo Kim
The hdmiphy can be apb and hdmiphy_port can be null. So before accessing hdmiphy_port, it should be checked. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04drm/exynos: control blending of mixer graphic layer 0Joonyoung Shim
The mixer graphic layer 0 isn't blended as default by commit 0377f4ed9f1aed30292c4e3c87f24e028ae26f36(drm/exynos: Don't blend mixer layer 0). But it needs to be blended with graphic layer 0 if video layer is enabled by vp because video layer is bottom. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04drm/exynos: Add MODULE_DEVICE_TABLE entries for various componentsSjoerd Simons
Add MODULE_DEVICE_TABLE calls for the various OF match tables that currently don't have one. This allows the module to be autoloaded based on devicetree information. Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04Subject: Revert "drm/exynos: remove MODULE_DEVICE_TABLE definitions"Sjoerd Simons
This reverts commit d089621896c3530a9bd309f96e9c9124d07f6c3f was original to prevent multiple MODULE_DEVICE_TABLE in one module. Which, as a side-effect broke autoloading of the module. Since 21bdd17b21b45ea48e06e23918d681afbe0622e9 it is possible to have multiple calls to MODULE_DEVICE_TABLE, so the patch can be reverted to restore support for autoloading Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04Subject: Revert "drm/exynos: fix module build error"Sjoerd Simons
Since 21bdd17b21b45ea48e06e23918d681afbe0622e9 it is possible to have multiple calls to MODULE_DEVICE_TABLE, so the patch can be reverted to restore support for autoloading Conflicts: drivers/gpu/drm/exynos/exynos_drm_fimd.c drivers/gpu/drm/exynos/exynos_drm_g2d.c Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03Linux 3.16v3.16Linus Torvalds
2014-08-03Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner: "Two fixes in the timer area: - a long-standing lock inversion due to a printk - suspend-related hrtimer corruption in sched_clock" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks sched_clock: Avoid corrupting hrtimer tree during suspend
2014-08-03drm/exynos/ipp: simplify ipp_find_driverAndrzej Hajda
The patch puts repeated code sequence into one function, removes verbose comments and decreases log verbosity. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: simplify ipp_create_idAndrzej Hajda
There is no gain in passing id by pointer to be filled. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: remove redundant messagesAndrzej Hajda
In case of error callback prints already corresponding message. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: simplify ipp_find_objAndrzej Hajda
The patch simplifies ipp_find_obj and removes debug messages. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: remove useless registration checksAndrzej Hajda
Argument checks are redundant, clients always check ippdrv before calling these functions. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: simplify memory check functionAndrzej Hajda
The only thing function should check is if there are buffers in respective queues. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: remove incorrect checks of list_first_entry resultAndrzej Hajda
list_first_entry does not return NULL on empty list so this check does not make sense. Moreover there is already code which prevents calling list_first_entry on empty lists. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: remove temporary variableAndrzej Hajda
There is no reason to allocate intermediate variable. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: correct address typeAndrzej Hajda
exynos_drm_gem_get_dma_addr returns dma_addr_t, type casting to void* and back is not necessary. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: remove struct exynos_drm_ipp_privateAndrzej Hajda
struct exynos_drm_ipp_private contains only one pointer so all occurrences of the struct can be replaced by the pointer itself. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: remove unused field from exynos_drm_ipp_privateAndrzej Hajda
The patch removes unused event_list field from struct exynos_drm_ipp_private. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos/ipp: remove type castingAndrzej Hajda
The patch replaces type casting with proper pointer. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: g2d: add exynos4212 as a compatible device.Alban Browaeys
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03ARM: dts: exynos5420: add dsi nodeYoungJun Cho
This patch adds common part of dsi node. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03ARM: dts: exynos5420: add mipi-phy nodeYoungJun Cho
This patch adds mipi-phy node for MIPI DSI device. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03ARM: dts: exynos5: add system register propertyYoungJun Cho
This patch adds sysreg property to fimd device node which is required to use I80 interface. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03ARM: dts: exynos4: add system register propertyYoungJun Cho
This patch adds sysreg property to fimd device node which is required to use I80 interface. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: dsi: add driver data to support Exynos5410/5420/5440 SoCsYoungJun Cho
The offset of register DSIM_PLLTMR_REG in Exynos5410 / 5420 / 5440 SoCs is different from the one in Exynos4 SoCs. In case of Exynos5410 / 5420 / 5440 SoCs, there is no frequency band bit in DSIM_PLLCTRL_REG, and it uses DSIM_PHYCTRL_REG and DSIM_PHYTIMING*_REG instead. So this patch adds driver data to distinguish it. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03ARM: dts: exynos_dsim: add exynos5410 compatible to DT bindingsYoungJun Cho
This patch adds relevant to exynos5410 compatible for exynos5410 / 5420 / 5440 SoCs support. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: fimd: support LCD I80 interfaceYoungJun Cho
To support MIPI command mode based I80 interface panel, FIMD should do followings: - Sets LCD I80 interface timings configuration. - Uses "lcd_sys" as an IRQ resource and sets relevant IRQ configuration. - Sets LCD block configuration for I80 interface. - Sets ideal(pixel) clock is 2 times faster than the original one to generate frame done IRQ prior to the next TE signal. - Implements trigger feature that transfers image data if there is page flip request, and implements TE handler to call trigger function. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: dsi: add TE interrupt handler to support LCD I80 interfaceYoungJun Cho
This is a temporary solution and should be made by more generic way. To support LCD I80 interface, the DSI host should register TE interrupt handler from the TE GPIO of attached panel. So the panel generates a tearing effect synchronization signal then the DSI host calls the CRTC device manager to trigger to transfer video image. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: add TE handler to support LCD I80 interfaceYoungJun Cho
To support LCD I80 interface, the panel should generate Tearing Effect synchronization signal between MCU and FB to display video images. And the display controller should trigger to transfer video image at this signal. So the panel receives the TE IRQ, then calls these handler chains to notify it to the display controller. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03ARM: dts: samsung-fimd: add LCD I80 interface specific propertiesYoungJun Cho
In case of using MIPI DSI based I80 interface panel, the relevant registers should be set. So this patch adds relevant DT bindings. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: use wait_event_timeout() for safety usageYoungJun Cho
There could be the case that the page flip operation isn't finished correctly with some abnormal condition such as panel reset. So this patch replaces wait_event() with wait_event_timeout() to avoid waiting for page flip completion infinitely. And clears exynos_crtc->pending_flip in exynos_drm_crtc_page_flip() when exynos_drm_crtc_mode_set_commit() is failed. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: dsi: move the EoT packets configuration pointYoungJun Cho
This configuration could be used in MIPI DSI command mode also. And adds user manual description for display configuration. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: hdmi: enable exynos 4210 and 4x12 soc supportMarek Szyprowski
Configuration sets for Exynos 4210 and 4x12 SoC were already defined in Exynos HDMI and Mixed drivers, but they lacked proper linking to device tree 'compatible' values. This patch fixes this issue adding support for following compatible values: samsung,exynos4210-mixer, samsung,exynos4212-mixer and samsung,exynos4210-hdmi. It also corrects access to sclk_mixer clock, which is available only on Exynos 4210. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: hdmi: make 'hdmi-en' regulator optional and keep it enabledMarek Szyprowski
HDMI_EN regulator is additional regulator for providing voltage source for DCC lines available on HDMI connector. When there is no power provided for DDC epprom, some TV-sets do not pulls up HPD (hot plug detect) line, what causes HDMI block to stay turned off. This patch enables HDMI_EN regulator (if available) on driver probe and keep it enabled all the time to let TV-set correctly signal HPD event. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: dp: Use correct module licenseJingoo Han
According to the header comment in the source file, the driver is licensed under GPL v2, so update MODULE_LICENSE() to match that. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: Remove unused variable in exynos_drm_gem.cSachin Kamat
'exynos_gem_obj' is not used in the function. Remove it. Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: Remove unused variable from exynos_hdmi.cSachin Kamat
'frame_size_code' is not used in the function. Remove it. Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03drm/exynos: Fix NULL pointer exception when suspending without componentsKrzysztof Kozlowski
Fix a NULL pointer exception when main exynos drm driver was probed successfully but no components were added (e.g. by incomplete DTS). In such case the exynos_drm_load() is never called and drvdata is NULL. The NULL pointer exception may theoretically also happen as a effect of race between adding components and main driver: if suspend of the driver happens before adding components. Trace: [ 1.190295] [drm] Initialized drm 1.1.0 20060810 [ 1.195209] exynos-drm-ipp exynos-drm-ipp: drm ipp registered successfully. (...) [ 24.001743] PM: Syncing filesystems ... done. [ 24.002177] Freezing user space processes ... (elapsed 0.000 seconds) done. [ 24.007403] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 24.032559] Unable to handle kernel NULL pointer dereference at virtual address 00000134 [ 24.035007] pgd = dedd8000 [ 24.037734] [00000134] *pgd=5ee13831, *pte=00000000, *ppte=00000000 [ 24.043953] Internal error: Oops: 17 [#1] PREEMPT SMP ARM [ 24.049329] Modules linked in: [ 24.052371] CPU: 0 PID: 1 Comm: sh Not tainted 3.16.0-rc3-00035-geba20bbdde04-dirty #51 [ 24.060354] task: df478000 ti: df480000 task.ti: df480000 [ 24.065743] PC is at mutex_lock+0x10/0x50 [ 24.069733] LR is at drm_modeset_lock_all+0x30/0xbc [ 24.074590] pc : [<c048516c>] lr : [<c02a14b4>] psr: a0000013 [ 24.074590] sp : df481db8 ip : 00000000 fp : c05e524c [ 24.086045] r10: 00000002 r9 : c02c1fe4 r8 : deca5e44 [ 24.091253] r7 : 00000000 r6 : 00000000 r5 : 0000014c r4 : 00000134 [ 24.097763] r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : 00000134 [ 24.104275] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 24.111391] Control: 10c53c7d Table: 5edd806a DAC: 00000015 [ 24.117120] Process sh (pid: 1, stack limit = 0xdf480240) [ 24.122502] Stack: (0xdf481db8 to 0xdf482000) [ 24.126843] 1da0: dee01d80 c02a14b4 [ 24.135004] 1dc0: 00000000 00000000 c07aff98 c02aec7c 00000002 00000000 00000000 c07aff98 [ 24.143164] 1de0: deca5e10 c02aecf4 c02aecd4 c02c2010 00000000 c02c9470 00000000 00000000 [ 24.151322] 1e00: 00000000 00000000 deca5e10 deca5e10 00000000 c07aff98 00000002 deca5e44 [ 24.159482] 1e20: c06d8f78 c06fb800 deca5e78 c02ca660 df7baf00 007b0aa0 deca5e10 c06fb7c8 [ 24.167641] 1e40: c07aff98 00000000 00000002 c02cbe18 9757aec5 00000005 9757aec5 00000005 [ 24.175801] 1e60: ded1d380 00000003 00000003 c05c74d8 ded1d380 c07209d4 c05c7514 c07105d8 [ 24.183960] 1e80: 01e2a738 c0068a74 00000000 c05c7514 ded1d380 c071c6e0 00000004 c07105d8 [ 24.192119] 1ea0: 01e2a738 c047f1e0 c0600cc0 df481ec4 00000003 00000000 00000003 c05c74d8 [ 24.200278] 1ec0: ded1d380 c071c6e0 c05c7514 c07105d8 01e2a738 c0069444 c06d905c 00000003 [ 24.208438] 1ee0: 00000003 ded1d380 c06d9064 00000004 c05c3fc0 c0067d4c df535ab0 ded1d380 [ 24.216596] 1f00: df481f80 ded1d380 00000004 ded1d1cc ded1d1c0 c0221724 00000004 c016ca6c [ 24.224756] 1f20: c016ca28 00000000 00000000 c016c1d4 00000000 00000000 b6f37000 df481f80 [ 24.232915] 1f40: decedd80 00000004 df480000 df480000 b6f37000 c0110920 df47839c 60000013 [ 24.241074] 1f60: 00000000 00000000 decedd80 decedd80 00000004 df480000 b6f37000 c0110da8 [ 24.249233] 1f80: 00000000 00000000 00000004 b6edf5d8 00000004 b6f37000 00000004 c000f2a8 [ 24.257393] 1fa0: 00001000 c000f0e0 b6edf5d8 00000004 00000001 b6f37000 00000004 00000000 [ 24.265551] 1fc0: b6edf5d8 00000004 b6f37000 00000004 00000004 00000001 00000000 01e2a738 [ 24.273711] 1fe0: 00000000 beba0a20 b6e1f4f0 b6e7022c 60000010 00000001 ffffffff ffffffff [ 24.281885] [<c048516c>] (mutex_lock) from [<c02a14b4>] (drm_modeset_lock_all+0x30/0xbc) [ 24.289950] [<c02a14b4>] (drm_modeset_lock_all) from [<c02aec7c>] (exynos_drm_suspend+0xc/0x64) [ 24.298627] [<c02aec7c>] (exynos_drm_suspend) from [<c02aecf4>] (exynos_drm_sys_suspend+0x20/0x34) [ 24.307568] [<c02aecf4>] (exynos_drm_sys_suspend) from [<c02c2010>] (platform_pm_suspend+0x2c/0x54) [ 24.316597] [<c02c2010>] (platform_pm_suspend) from [<c02c9470>] (dpm_run_callback+0x48/0x170) [ 24.325188] [<c02c9470>] (dpm_run_callback) from [<c02ca660>] (__device_suspend+0x128/0x39c) [ 24.333606] [<c02ca660>] (__device_suspend) from [<c02cbe18>] (dpm_suspend+0x5c/0x314) [ 24.341506] [<c02cbe18>] (dpm_suspend) from [<c0068a74>] (suspend_devices_and_enter+0x8c/0x598) [ 24.350185] [<c0068a74>] (suspend_devices_and_enter) from [<c0069444>] (pm_suspend+0x4c4/0x5d0) [ 24.358862] [<c0069444>] (pm_suspend) from [<c0067d4c>] (state_store+0x70/0xd4) [ 24.366156] [<c0067d4c>] (state_store) from [<c0221724>] (kobj_attr_store+0x14/0x20) [ 24.373885] [<c0221724>] (kobj_attr_store) from [<c016ca6c>] (sysfs_kf_write+0x44/0x48) [ 24.381867] [<c016ca6c>] (sysfs_kf_write) from [<c016c1d4>] (kernfs_fop_write+0xc0/0x17c) [ 24.390027] [<c016c1d4>] (kernfs_fop_write) from [<c0110920>] (vfs_write+0xa0/0x1c4) [ 24.397750] [<c0110920>] (vfs_write) from [<c0110da8>] (SyS_write+0x40/0x8c) [ 24.404782] [<c0110da8>] (SyS_write) from [<c000f0e0>] (ret_fast_syscall+0x0/0x3c) [ 24.412332] Code: e92d4010 e1a04000 f57ff05b f590f000 (e1903f9f) [ 24.418448] ---[ end trace cfa06690eabe8dd5 ]--- [ 24.423032] Kernel panic - not syncing: Fatal exception [ 24.428220] CPU1: stopping [ 24.430905] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D 3.16.0-rc3-00035-geba20bbdde04-dirty #51 [ 24.440549] [<c0016440>] (unwind_backtrace) from [<c001294c>] (show_stack+0x10/0x14) [ 24.448269] [<c001294c>] (show_stack) from [<c04811e8>] (dump_stack+0x80/0xcc) [ 24.455472] [<c04811e8>] (dump_stack) from [<c001495c>] (handle_IPI+0x130/0x15c) [ 24.462850] [<c001495c>] (handle_IPI) from [<c000862c>] (gic_handle_irq+0x60/0x68) [ 24.470400] [<c000862c>] (gic_handle_irq) from [<c0013440>] (__irq_svc+0x40/0x70) [ 24.477860] Exception stack(0xdf4bdf88 to 0xdf4bdfd0) [ 24.482898] df80: ffffffed 00000000 00000000 00000000 df4bc000 c06d042c [ 24.491058] dfa0: 00000000 ffffffed c06d03c0 00000000 c070c288 00000000 00000000 df4bdfd0 [ 24.499214] dfc0: c0010324 c0010328 60000013 ffffffff [ 24.504254] [<c0013440>] (__irq_svc) from [<c0010328>] (arch_cpu_idle+0x28/0x30) [ 24.511634] [<c0010328>] (arch_cpu_idle) from [<c005f110>] (cpu_startup_entry+0x2c4/0x3f0) [ 24.519878] [<c005f110>] (cpu_startup_entry) from [<400086c4>] (0x400086c4) [ 24.526821] ---[ end Kernel panic - not syncing: Fatal exception Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-02Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds
Pull ARM fixes from Russell King: "A few fixes for ARM. Some of these are correctness issues: - TLBs must be flushed after the old mappings are removed by the DMA mapping code, but before the new mappings are established. - An off-by-one entry error in the Keystone LPAE setup code. Fixes include: - ensuring that the identity mapping for LPAE does not remove the kernel image from the identity map. - preventing userspace from trapping into kgdb. - fixing a preemption issue in the Intel iwmmxt code. - fixing a build error with nommu. Other changes include: - Adding a note about which areas of memory are expected to be accessible while the identity mapping tables are in place" * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instruction ARM: idmap: add identity mapping usage note ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout ARM: fix alignment of keystone page table fixup ARM: 8112/1: only select ARM_PATCH_PHYS_VIRT if MMU is enabled ARM: 8100/1: Fix preemption disable in iwmmxt_task_enable() ARM: DMA: ensure that old section mappings are flushed from the TLB
2014-08-02ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instructionOmar Sandoval
The kgdb breakpoint hooks (kgdb_brk_fn and kgdb_compiled_brk_fn) should only be entered when a kgdb break instruction is executed from the kernel. Otherwise, if kgdb is enabled, a userspace program can cause the kernel to drop into the debugger by executing either KGDB_BREAKINST or KGDB_COMPILED_BREAK. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-08-02ARM: idmap: add identity mapping usage noteRussell King
Add a note about the usage of the identity mapping; we do not support accesses outside of the identity map region and kernel image while a CPU is using the identity map. This is because the identity mapping may overwrite vmalloc space, IO mappings, the vectors pages, etc. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-08-01Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs fixes from Al Viro: "This contains a couple of fixes - one is the aio fix from Christoph, the other a fallocate() one from Eric" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: vfs: fix check for fallocate on active swapfile direct-io: fix AIO regression
2014-08-01Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Peter Anvin: "A single fix to not invoke the espfix code on Xen PV, as it turns out to oops the guest when invoked after all. This patch leaves some amount of dead code, in particular unnecessary initialization of the espfix stacks when they won't be used, but in the interest of keeping the patch minimal that cleanup can wait for the next cycle" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86_64/entry/xen: Do not invoke espfix64 on Xen
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