reset: Return -ENOTSUPP when not configured

Prior to commit 6c96f05c8bb8 ("reset: Make [of_]reset_control_get[_foo]
functions wrappers"), the "optional" functions returned -ENOTSUPP when
CONFIG_RESET_CONTROLLER was not set.

Revert back to the old behavior by changing the new
__devm_reset_control_get() and __of_reset_control_get() functions to
return ERR_PTR(-ENOTSUPP) when compiled without CONFIG_RESET_CONTROLLER.

Otherwise they will return -EINVAL causing users to think that an error
occurred when CONFIG_RESET_CONTROLLER is not set.

Fixes: 6c96f05c8bb8 ("reset: Make [of_]reset_control_get[_foo] functions wrappers")
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/reset.h b/include/linux/reset.h
index ec0306ce7b92..067db57c81dc 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -71,14 +71,14 @@ static inline struct reset_control *__of_reset_control_get(
                                         struct device_node *node,
                                         const char *id, int index, int shared)
 {
-        return ERR_PTR(-EINVAL);
+        return ERR_PTR(-ENOTSUPP);
 }
 
 static inline struct reset_control *__devm_reset_control_get(
                                         struct device *dev,
                                         const char *id, int index, int shared)
 {
-        return ERR_PTR(-EINVAL);
+        return ERR_PTR(-ENOTSUPP);
 }
 
 #endif /* CONFIG_RESET_CONTROLLER */