[RESEND PATCH 2/7] clk: fix error check for devm_clk_get_optional()

[Chunfeng Yun]

If skip all return error number, it may skip some real error cases,
so only skip the error when the clock is not provided in DTS

Signed-off-by: Chunfeng Yun <chunfeng.yun at mediatek.com>
---
 drivers/clk/clk-uclass.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 9aa8537004..2778b504c0 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -678,7 +678,7 @@ struct clk *devm_clk_get_optional(struct udevice *dev, const char *id)
 {
 	struct clk *clk = devm_clk_get(dev, id);
 
-	if (IS_ERR(clk))
+	if (PTR_ERR(clk) == -ENODATA)
 		return NULL;
 
 	return clk;
-- 
2.24.0