[PATCH] drm/radeon/kms: clean up CS flags chunk processing

[alexdeucher at gmail.com]

From: Alex Deucher <alexander.deucher at amd.com>

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/radeon_cs.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index de3cac0..e30a36f 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -203,10 +203,9 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
 		}
 		if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS) {
 			p->chunk_flags_idx = i;
-		}
-		if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS &&
-		    !p->chunks[i].length_dw) {
-			return -EINVAL;
+			/* zero length flags aren't useful */
+			if (p->chunks[i].length_dw == 0)
+				return -EINVAL;
 		}
 
 		p->chunks[i].length_dw = user_chunk.length_dw;
-- 
1.7.3.4