From: Kristian Høgsberg Date: Sat, 14 Feb 2009 01:56:49 +0000 (-0500) Subject: drm: Add locking around cursor gem operations. X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=7f9872e06d749afdc2029aa6b7ffe88cb3b8c5c2;p=linux-2.6-omap-h63xx.git drm: Add locking around cursor gem operations. We need to hold the struct_mutex around pinning and the phys object operations. Signed-off-by: Kristian Høgsberg Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index ac92799fa8a..94c7c098c4f 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1043,18 +1043,19 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc, } /* we only need to pin inside GTT if cursor is non-phy */ + mutex_lock(&dev->struct_mutex); if (!dev_priv->cursor_needs_physical) { ret = i915_gem_object_pin(bo, PAGE_SIZE); if (ret) { DRM_ERROR("failed to pin cursor bo\n"); - goto fail; + goto fail_locked; } addr = obj_priv->gtt_offset; } else { ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1); if (ret) { DRM_ERROR("failed to attach phys object\n"); - goto fail; + goto fail_locked; } addr = obj_priv->phys_obj->handle->busaddr; } @@ -1074,10 +1075,9 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc, i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo); } else i915_gem_object_unpin(intel_crtc->cursor_bo); - mutex_lock(&dev->struct_mutex); drm_gem_object_unreference(intel_crtc->cursor_bo); - mutex_unlock(&dev->struct_mutex); } + mutex_unlock(&dev->struct_mutex); intel_crtc->cursor_addr = addr; intel_crtc->cursor_bo = bo; @@ -1085,6 +1085,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc, return 0; fail: mutex_lock(&dev->struct_mutex); +fail_locked: drm_gem_object_unreference(bo); mutex_unlock(&dev->struct_mutex); return ret;