Merge tag 'drm-misc-next-2019-10-24-2' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.5:

UAPI Changes:
-syncobj: allow querying the last submitted timeline value (David)
-fourcc: explicitly defineDRM_FORMAT_BIG_ENDIAN as unsigned (Adam)
-omap: revert the OMAP_BO_* flags that were added -- no userspace (Sean)

Cross-subsystem Changes:
-MAINTAINERS: add Mihail as komeda co-maintainer (Mihail)

Core Changes:
-edid: a few cleanups, add AVI infoframe bar info (Ville)
-todo: remove i915 device_link item and add difficulty levels (Daniel)
-dp_helpers: add a few new helpers to parse dpcd (Thierry)

Driver Changes:
-gma500: fix a few memory disclosure leaks (Kangjie)
-qxl: convert to use the new drm_gem_object_funcs.mmap (Gerd)
-various: open code dp_link helpers in preparation for helper removal (Thierry)

Cc: Chunming Zhou <david1.zhou@amd.com>
Cc: Adam Jackson <ajax@redhat.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Mihail Atanassov <mihail.atanassov@arm.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191024155535.GA10294@art_vandelay

1 files changed, 22 insertions, 15 deletions

diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 9ec334663c2d..669c93fe2500 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -1280,7 +1280,7 @@ drm_syncobj_timeline_signal_ioctl(struct drm_device *dev, void *data,
 	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE))
 		return -EOPNOTSUPP;
 
-	if (args->pad != 0)
+	if (args->flags != 0)
 		return -EINVAL;
 
 	if (args->count_handles == 0)
@@ -1351,7 +1351,7 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE))
 		return -EOPNOTSUPP;
 
-	if (args->pad != 0)
+	if (args->flags & ~DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED)
 		return -EINVAL;
 
 	if (args->count_handles == 0)
@@ -1372,25 +1372,32 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 		fence = drm_syncobj_fence_get(syncobjs[i]);
 		chain = to_dma_fence_chain(fence);
 		if (chain) {
-			struct dma_fence *iter, *last_signaled = NULL;
-
-			dma_fence_chain_for_each(iter, fence) {
-				if (iter->context != fence->context) {
-					dma_fence_put(iter);
-					/* It is most likely that timeline has
-					 * unorder points. */
-					break;
+			struct dma_fence *iter, *last_signaled =
+				dma_fence_get(fence);
+
+			if (args->flags &
+			    DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED) {
+				point = fence->seqno;
+			} else {
+				dma_fence_chain_for_each(iter, fence) {
+					if (iter->context != fence->context) {
+						dma_fence_put(iter);
+						/* It is most likely that timeline has
+						* unorder points. */
+						break;
+					}
+					dma_fence_put(last_signaled);
+					last_signaled = dma_fence_get(iter);
 				}
-				dma_fence_put(last_signaled);
-				last_signaled = dma_fence_get(iter);
+				point = dma_fence_is_signaled(last_signaled) ?
+					last_signaled->seqno :
+					to_dma_fence_chain(last_signaled)->prev_seqno;
 			}
-			point = dma_fence_is_signaled(last_signaled) ?
-				last_signaled->seqno :
-				to_dma_fence_chain(last_signaled)->prev_seqno;
 			dma_fence_put(last_signaled);
 		} else {
 			point = 0;
 		}
+		dma_fence_put(fence);
 		ret = copy_to_user(&points[i], &point, sizeof(uint64_t));
 		ret = ret ? -EFAULT : 0;
 		if (ret)