drm/msm/dsi: correct DSI id bounds check during registration

Check DSI instance id argument against the proper boundary size to protect against invalid configuration of the DSI id. Signed-off-by: Lloyd Atkinson <[email protected]> Signed-off-by: Rob Clark <[email protected]>
sfionov · Feb 20, 2018 · 6e1787c · 6e1787c
1 parent f0efc83
commit 6e1787c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -862,7 +862,7 @@ int msm_dsi_manager_register(struct msm_dsi *msm_dsi)
 	int id = msm_dsi->id;
 	int ret;
 
-	if (id > DSI_MAX) {
+	if (id >= DSI_MAX) {
 		pr_err("%s: invalid id %d\n", __func__, id);
 		return -EINVAL;
 	}