- 11 Aug, 2015 3 commits
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Daniel Vetter authored
It really doesn't protect anything which doesn't have other locks already. It also doesn't seem to be wired up into the driver unload code fwiw, but that's a different issue. Reviewed-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com>
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Daniel Vetter authored
This is only called in driver load/unload paths, no need to grab any locks at all. Also, ttm takes care of itself anyway. Cc: Ben Skeggs <bskeggs@redhat.com> Reviewed-by:
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Daniel Vetter authored
Since David Herrmann's mmap vma manager rework we don't need to grab dev->struct_mutex any more to prevent races when looking up the mmap offset. Drop it and instead don't forget to use the unref_unlocked variant (since the drm core still cares). Aside: I stumbled over the mmap handler which directly does a dma_mmap_attrs. But totally fails to grab a reference on the underlying object and hence looks like it happily just leaks the ptes since there's no guarantee the mmap isn't still around when gem_free_object is called. Which the kerneldoc of dma_mmap_attrs explicitly forbids. v2: Fixup compile fail 0-day spotted. Cc: Mark Yao <mark.yao@rock-chips.com> Reviewed-by:
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- 10 Aug, 2015 7 commits
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Daniel Vetter authored
Since David Herrmann's mmap vma manager rework we don't need to grab dev->struct_mutex any more to prevent races when looking up the mmap offset. Drop it and instead don't forget to use the unref_unlocked variant (since the drm core still cares). Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Rob Clark <robdclark@gmail.com> Reviewed-by:
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Daniel Vetter authored
Since David Herrmann's mmap vma manager rework we don't need to grab dev->struct_mutex any more to prevent races when looking up the mmap offset. Drop it and instead don't forget to use the unref_unlocked variant (since the drm core still cares). Reviewed-by:
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Daniel Vetter authored
Looking up an obj, immediate dropping the acquired reference and then continuing to use it isn't how this is supposed to work. Fix this by holding a reference for the entire function. While at it stop grabbing dev->struct_mutex, it doesn't protect anything here. Reviewed-by:
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Daniel Vetter authored
Since David Herrmann's mmap vma manager rework we don't need to grab dev->struct_mutex any more to prevent races when looking up the mmap offset. Drop it and instead don't forget to use the unref_unlocked variant (since the drm core still cares). Reviewed-by:
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Daniel Vetter authored
Since David Herrmann's mmap vma manager rework we don't need to grab dev->struct_mutex any more to prevent races when looking up the mmap offset. Drop it and instead don't forget to use the unref_unlocked variant (since the drm core still cares). Reviewed-by:
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Daniel Vetter authored
Since David Herrmann's mmap vma manager rework we don't need to grab dev->struct_mutex any more to prevent races when looking up the mmap offset. Drop it and instead don't forget to use the unref_unlocked variant (since the drm core still cares). Reviewed-by:
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Daniel Vetter authored
BUG_ON kills the driver, WARN_ON is much friendlier. And usually nothing bad happens when the locking is slightly busted. v2: Fix typos in commit message Thierry spotted. Reviewed-by:
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- 07 Aug, 2015 1 commit
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Thierry Reding authored
The Direct Rendering Manager Kconfig option is already a separate menu, so remove the extra level to make it easier to navigate. Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
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- 06 Aug, 2015 29 commits
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Archit Taneja authored
Legacy fbdev emulation support via DRM is achieved through KMS FB helpers. Most modesetting drivers enable provide fbdev emulation by default by selecting KMS FB helpers. A few provide a separate Kconfig option for the user to enable or disbale fbdev emulation. Enabling fbdev emulation is finally a distro-level decision. Having a top level Kconfig option for fbdev emulation helps by providing a uniform way to enable/disable fbdev emulation for any modesetting driver. It also lets us remove unnecessary driver specific Kconfig options that causes bloat. With a top level Kconfig in place, we can stub out the fb helper functions when not needed without breaking functionality. Having stub functions also prevents drivers to require wrapping fb helper function calls with #ifdefs. DRM_FBDEV_EMULATION defaults to y since many drivers enable fbdev emulation by default and majority of distributions expect the fbdev interface in the kernel. Signed-off-by:
Archit Taneja <architt@codeaurora.org> Signed-off-by:
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Geert Uytterhoeven authored
If CONFIG_MAGIC_SYSRQ is not set: drivers/gpu/drm/drm_fb_helper.c:390:13: warning: 'drm_fb_helper_force_kernel_mode' defined but not used [-Wunused-function] static bool drm_fb_helper_force_kernel_mode(void) ^ Move drm_fb_helper_force_kernel_mode() inside the existing #ifdef to fix this. Signed-off-by:Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Geert Uytterhoeven authored
As of commit 5ea1f752 ("drm: add drm_fb_helper_restore_fbdev_mode_unlocked()"), drm_fb_helper_restore_fbdev_mode() is no longer public, and drivers should call drm_fb_helper_restore_fbdev_mode_unlocked() from their ->lastclose callbacks instead. Update the documentation to reflect this, and absorb the one liner drm_fb_helper_restore_fbdev_mode() into its single caller. Signed-off-by:
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Viresh Kumar authored
IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there is no need to do that again from its callers. Drop it. Signed-off-by:
Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by:
Sinclair Yeh <syeh@vmware.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Don't touch remove_conflicting_framebuffers v2: - add missing header for virtgpu_fb.c Cc: David Airlie <airlied@linux.ie> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Don't touch remove_conflicting_framebuffers v2: - Fixed PTR_ERR issue mentioned by kbuild bot Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Oded Gabbay <oded.gabbay@gmail.com> Cc: "Christian König" <christian.koenig@amd.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Don't touch remove_conflicting_framebuffers v2: - remove unused variable device in bochsfb_create Cc: David Airlie <airlied@linux.ie> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Don't touch remove_conflicting_framebuffers v2: - remove unused variable pdev in nouveau_fbcon_create Cc: David Airlie <airlied@linux.ie> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Don't touch remove_conflicting_framebuffers v2: - No changes Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Don't touch remove_conflicting_framebuffers v2: - Fix build break because of missing include of drm_fb_helper in radeon_drv.c Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Don't touch remove_conflicting_framebuffers v2: - remove unused goto label 'out' Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v3: - Update error handling for new drm_fb_helper funcs. Check using IS_ERR() instead of checking for NULL. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> v2: - No changes Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. v3: - Don't touch remove_conflicting_framebuffers v2: - Remove stray goto label out_iounmap Cc: Thierry Reding <treding@nvidia.com> Cc: Zach Reizner <zachr@google.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Fabian Frederick <fabf@skynet.be> Signed-off-by:
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Daniel Vetter authored
With commit 7a3f3d66 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Thu Jul 9 23:44:28 2015 +0200 drm: Check locking in drm_for_each_connector we started checking the locking in drm_for_each_connector but somehow I totally missed drm_mode_config_reset. There's no problem there since this function should only be called in single-threaded contexts (driver load or resume), so just wrap the loop with the right lock. v2: Drink coffee and all that ... Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reported-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by:
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Daniel Vetter authored
The last user is gone, no need for trylocking any more in this legacy helper. Reviewed-by:
Rob Clark <robdclark@gmail.com> Signed-off-by:
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Daniel Vetter authored
Since the panic handling is gone this is only used for force-restoring the fbdev/fbcon from sysrq, and that's done with a work item. No need any more to do trylocks, we can just do normal locking. Reviewed-by:
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Daniel Vetter authored
Trying to do anything with kms drivers when oopsing has become a failing proposition. But since we can end up in the fbdev code simply due to the console unblanking that's done unconditionally just removing our panic handler isn't enough. We need to block all fbdev callbacks when oopsing. There was already one in the blank handler, but it failed silently. That makes it impossible for drivers (like i915) who subclass these functions to figure this out. Instead consistently return -EBUSY so that everyone knows that we really don't want to be bothered right now. This also allows us to remove a pile of FIXMEs from the i915 fbdev code (since due to the failure code they now won't attempt to grab dangerous locks any more). Cc: Dave Airlie <airlied@gmail.com> Cc: Rodrigo Vivi <rodrigo.vivi@gmail.com> Reviewed-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v2: - remove unused variable device in udlfb_create Cc: David Airlie <airlied@linux.ie> Cc: Haixia Shi <hshi@chromium.org> Cc: "Stéphane Marchesin" <marcheu@chromium.org> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. Cc: David Airlie <airlied@linux.ie> Cc: Frediano Ziglio <fziglio@redhat.com> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v2: - removed unused variable 'device' in psbfb_create Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v2: - Remove unnecessary dealloc cmap in error handling path Cc: Inki Dae <inki.dae@samsung.com> Cc: Joonyoung Shim <jy0922.shim@samsung.com> Cc: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. Cc: Rob Clark <robdclark@gmail.com> Cc: Stephane Viau <sviau@codeaurora.org> Cc: Hai Li <hali@codeaurora.org> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. v2: - Fix up error handling path in tegra_fbdev_probe Cc: Thierry Reding <thierry.reding@gmail.com> Cc: "Terje Bergström" <tbergstrom@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. Cleaned up the error handling in astfb_create a bit. v2: - removed unused variable 'device' in astfb_create Cc: David Airlie <airlied@linux.ie> Cc: "Y.C. Chen" <yc_chen@aspeedtech.com> Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
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Archit Taneja authored
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. This is an effort to create a top level drm fbdev emulation option. Cc: Mark Yao <mark.yao@rock-chips.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Rob Clark <robdclark@gmail.com> Cc: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by:
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Archit Taneja authored
Some drm drivers call fb_set_suspend. Create a drm_fb_helper function that wraps around these calls. This is part of an effort to prevent drm drivers from calling fbdev functions directly, in order to make fbdev emulation a top level drm option. v3: - Fixed kerneldoc errors v2: - Added kerneldocs - Added a check for non-NULL fb_helper before proceeding. This will make the helpers work when we have a module param for fbdev emulation - Follow the drm way of aligning of arguments in func definitions Signed-off-by:
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Archit Taneja authored
drm drivers that emulate fbdev populate their fb_fillrect, fb_copyarea and fb_imageblit fb_ops with the help of cfb_* or sys_* fbdev core helper functions. Create drm_fb_helper functions that wrap around these calls. This is part of an effort to prevent drm drivers from calling fbdev functions directly, in order to make fbdev emulation a top level drm option. v3: - Fixed kerneldoc errors v2: - Added kerneldocs - Follow the drm way of aligning of arguments in func definitions - Remove unnecessary checks for non NULL fb_info Signed-off-by:
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