[PATCH 3/5] clk: also handle ENOENT in *_optional functions

[Yang Xiwen via B4 Relay]

From: Yang Xiwen <forbidden405 at outlook.com>

If the device does not specify any clocks in device tree, these
functions will return PTR_ERR(-ENOENT). This is not the intended
behavior and does not comply with linux kernel CCF. Fix that by
returning NULL under such circumstances instead.

Signed-off-by: Yang Xiwen <forbidden405 at outlook.com>
---
 include/clk.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/clk.h b/include/clk.h
index d91285235f..f95da0838d 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -223,9 +223,11 @@ struct clk *devm_clk_get(struct udevice *dev, const char *id);
 static inline struct clk *devm_clk_get_optional(struct udevice *dev,
 						const char *id)
 {
+	int ret;
 	struct clk *clk = devm_clk_get(dev, id);
 
-	if (PTR_ERR(clk) == -ENODATA)
+	ret = PTR_ERR(clk);
+	if (ret == -ENODATA || ret == -ENOENT)
 		return NULL;
 
 	return clk;
@@ -335,7 +337,7 @@ static inline int clk_get_by_name_optional(struct udevice *dev,
 	int ret;
 
 	ret = clk_get_by_name(dev, name, clk);
-	if (ret == -ENODATA)
+	if (ret == -ENODATA || ret == -ENOENT)
 		return 0;
 
 	return ret;
@@ -359,7 +361,7 @@ static inline int clk_get_by_name_nodev_optional(ofnode node, const char *name,
 	int ret;
 
 	ret = clk_get_by_name_nodev(node, name, clk);
-	if (ret == -ENODATA)
+	if (ret == -ENODATA || ret == -ENOENT)
 		return 0;
 
 	return ret;

-- 
2.34.1