rk30: clock: clk_get_parent return error when clk invalid

2026-06-09 04:10:18 +09:00 · 2012-05-07 20:11:36 +08:00
parent 03ff0147bd
commit fd8103d56a
1 changed files with 3 additions and 0 deletions
--- a/arch/arm/mach-rk30/clock.c
+++ b/arch/arm/mach-rk30/clock.c
@@ -445,6 +445,9 @@ struct clk *rk30_clk_get_parent(struct clk *clk)
 struct clk *clk_get_parent(struct clk *clk)
 #endif
 {
+	if (clk == NULL || IS_ERR(clk)) {
+		return ERR_PTR(-EINVAL);
+	}
 	return clk->parent;
 }