On Wed, Jul 09, 2014 at 04:22:10PM -0700, Matt Roper wrote:
> intel_primary_plane_{setplane,disable} were lacking struct_mutex locking
> around their GEM operations.
>
> Signed-off-by: Matt Roper <matthew.d.ro...@intel.com>
Both merged with a reported-by: Damien added to this one here. Btw have
you checked that your primary plane tests hit this with the new WARN_ONs?
I'm missing the Testcase: tag ;-)
-Daniel
> ---
> drivers/gpu/drm/i915/intel_display.c | 17 +++++++++++++++--
> 1 file changed, 15 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index 5a50ff9..6b25068 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -11389,9 +11389,11 @@ intel_primary_plane_disable(struct drm_plane *plane)
> intel_disable_primary_hw_plane(dev_priv, intel_plane->plane,
> intel_plane->pipe);
> disable_unpin:
> + mutex_lock(&dev->struct_mutex);
> i915_gem_track_fb(intel_fb_obj(plane->fb), NULL,
> INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe));
> intel_unpin_fb_obj(intel_fb_obj(plane->fb));
> + mutex_unlock(&dev->struct_mutex);
> plane->fb = NULL;
>
> return 0;
> @@ -11448,6 +11450,8 @@ intel_primary_plane_setplane(struct drm_plane *plane,
> struct drm_crtc *crtc,
> * turn on the display with all planes setup as desired.
> */
> if (!crtc->enabled) {
> + mutex_lock(&dev->struct_mutex);
> +
> /*
> * If we already called setplane while the crtc was disabled,
> * we may have an fb pinned; unpin it.
> @@ -11459,7 +11463,10 @@ intel_primary_plane_setplane(struct drm_plane
> *plane, struct drm_crtc *crtc,
> INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe));
>
> /* Pin and return without programming hardware */
> - return intel_pin_and_fence_fb_obj(dev, obj, NULL);
> + ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
> + mutex_unlock(&dev->struct_mutex);
> +
> + return ret;
> }
>
> intel_crtc_wait_for_pending_flips(crtc);
> @@ -11471,14 +11478,18 @@ intel_primary_plane_setplane(struct drm_plane
> *plane, struct drm_crtc *crtc,
> * because plane->fb still gets set and pinned.
> */
> if (!visible) {
> + mutex_lock(&dev->struct_mutex);
> +
> /*
> * Try to pin the new fb first so that we can bail out if we
> * fail.
> */
> if (plane->fb != fb) {
> ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
> - if (ret)
> + if (ret) {
> + mutex_unlock(&dev->struct_mutex);
> return ret;
> + }
> }
>
> i915_gem_track_fb(old_obj, obj,
> @@ -11494,6 +11505,8 @@ intel_primary_plane_setplane(struct drm_plane *plane,
> struct drm_crtc *crtc,
> if (plane->fb)
> intel_unpin_fb_obj(old_obj);
>
> + mutex_unlock(&dev->struct_mutex);
> +
> return 0;
> }
>
> --
> 1.8.5.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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