[PATCH 07/11] drm/vmwgfx: Print message when command verifier returns with error

[Deepak Singh Rawat]

Whenever command verifier function returns with an error, print a debug
message using VMW_DEBUG_USER. This will make sure failing commands can
be easily tracked for debugging purpose.

Signed-off-by: Deepak Rawat <drawat at vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom at vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 9362670af03c..9df334340146 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -3287,8 +3287,11 @@ static int vmw_cmd_check(struct vmw_private *dev_priv,
 		goto out_new;
 
 	ret = entry->func(dev_priv, sw_context, header);
-	if (unlikely(ret != 0))
-		goto out_invalid;
+	if (unlikely(ret != 0)) {
+		VMW_DEBUG_USER("SVGA3D command: %d failed with error %d\n",
+			       cmd_id + SVGA_3D_CMD_BASE, ret);
+		return ret;
+	}
 
 	return 0;
 out_invalid:
-- 
2.17.1