diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2015-04-13 16:03:03 +0100 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2015-04-14 16:09:05 +0300 |
| commit | e0d6149b3debce1a7e17dfda7c2829935917dc58 (patch) | |
| tree | fce1cc2151d4a8c9250230f4514b7bc7c3899dc8 /drivers/gpu | |
| parent | 08d9bc920d465bbbbd762cac9383249c19bf69a2 (diff) | |
| download | lwn-e0d6149b3debce1a7e17dfda7c2829935917dc58.tar.gz lwn-e0d6149b3debce1a7e17dfda7c2829935917dc58.zip | |
drm/i915: Move drm_framebuffer_unreference out of struct_mutex for takeover
intel_user_framebuffer_destroy() requires the struct_mutex for its
object bookkeeping, so this means that all calls to
drm_framebuffer_unreference must be held without that lock.
This is a simplified version of the identically named patch by Chris Wilson.
Regression from commit ab8d66752a9c28cd6c94fa173feacdfc1554aa03
Author: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Date: Mon Feb 2 15:44:15 2015 +0000
drm/i915: Track old framebuffer instead of object
v2: Bikeshedding.
References: https://bugs.freedesktop.org/show_bug.cgi?id=89166
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 5b32b682bc3e..d547d9c8dda2 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14259,6 +14259,7 @@ void intel_modeset_gem_init(struct drm_device *dev) struct drm_i915_private *dev_priv = dev->dev_private; struct drm_crtc *c; struct drm_i915_gem_object *obj; + int ret; mutex_lock(&dev->struct_mutex); intel_init_gt_powersave(dev); @@ -14283,16 +14284,18 @@ void intel_modeset_gem_init(struct drm_device *dev) * pinned & fenced. When we do the allocation it's too early * for this. */ - mutex_lock(&dev->struct_mutex); for_each_crtc(dev, c) { obj = intel_fb_obj(c->primary->fb); if (obj == NULL) continue; - if (intel_pin_and_fence_fb_obj(c->primary, - c->primary->fb, - c->primary->state, - NULL)) { + mutex_lock(&dev->struct_mutex); + ret = intel_pin_and_fence_fb_obj(c->primary, + c->primary->fb, + c->primary->state, + NULL); + mutex_unlock(&dev->struct_mutex); + if (ret) { DRM_ERROR("failed to pin boot fb on pipe %d\n", to_intel_crtc(c)->pipe); drm_framebuffer_unreference(c->primary->fb); @@ -14300,7 +14303,6 @@ void intel_modeset_gem_init(struct drm_device *dev) update_state_fb(c->primary); } } - mutex_unlock(&dev->struct_mutex); intel_backlight_register(dev); } |