From: Ian Forbes <ian.forbes@broadcom.com>
Date: Fri, 9 Aug 2024 18:37:56 +0000 (-0500)
Subject: drm/vmwgfx: Handle possible ENOMEM in vmw_stdu_connector_atomic_check
X-Git-Tag: v6.12-rc4~26^2~1^2~10
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4809a017a2bc42ff239d53ade4b2e70f2fe81348;p=thirdparty%2Flinux.git

drm/vmwgfx: Handle possible ENOMEM in vmw_stdu_connector_atomic_check

Handle unlikely ENOMEN condition and other errors in
vmw_stdu_connector_atomic_check.

Signed-off-by: Ian Forbes <ian.forbes@broadcom.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Fixes: 75c3e8a26a35 ("drm/vmwgfx: Trigger a modeset when the screen moves")
Reviewed-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Martin Krastev <martin.krastev@broadcom.com>
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240809183756.27283-1-ian.forbes@broadcom.com
---

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index fab155a68054a..82d18b88f4a7e 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)