[PATCH] drm/vmwgfx: Handle possible ENOMEM in vmw_stdu_connector_atomic_check

[Ian Forbes]

Handle unlikely ENOMEN condition and other errors in
vmw_stdu_connector_atomic_check.

Signed-off-by: Ian Forbes <ian.forbes at broadcom.com>
Reported-by: Dan Carpenter <dan.carpenter at linaro.org>
Fixes: 75c3e8a26a35 ("drm/vmwgfx: Trigger a modeset when the screen moves")
---
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index 571e157fe22e9..3223fd278a598 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -886,6 +886,10 @@ static int vmw_stdu_connector_atomic_check(struct drm_connector *conn,
 	struct drm_crtc_state *new_crtc_state;
 
 	conn_state = drm_atomic_get_connector_state(state, conn);
+
+	if (IS_ERR(conn_state))
+		return PTR_ERR(conn_state);
+
 	du = vmw_connector_to_stdu(conn);
 
 	if (!conn_state->crtc)
-- 
2.34.1