Merge "drm/msm/hdcp: Check QSEECOM response only if message length is…

… not 0"
sonyxperiadev · Jul 9, 2019 · 0bcb2a9 · 0bcb2a9
2 parents 4b08e23 + 1485514
commit 0bcb2a9
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/drivers/gpu/drm/msm/sde_hdcp_2x.c b/drivers/gpu/drm/msm/sde_hdcp_2x.c
@@ -749,7 +749,10 @@ static void sde_hdcp_2x_msg_recvd(struct sde_hdcp_2x_ctrl *hdcp)
 		goto exit;
 	}
 
-	out_msg = (u32)hdcp->app_data.response.data[0];
+	if (hdcp->app_data.response.length == 0)
+		out_msg = INVALID_MESSAGE;
+	else
+		out_msg = (u32)hdcp->app_data.response.data[0];
 
 	pr_debug("message received from TZ: %s\n",
 			sde_hdcp_2x_message_name(out_msg));