When of_reset_control_get() is called without connection ID it returns
-ENOENT when the 'resets' property doesn't exists or is an empty entry.
However when a connection ID is given it returns -EINVAL when the 'resets'
property doesn't exists or the requested name can't be found. This is
because the error code returned by of_property_match_string() is just
passed down as an index to of_parse_phandle_with_args(), which then
returns -EINVAL.
To get a consistent return value with both code paths we must return
-ENOENT when of_property_match_string() fails.
Signed-off-by: Alban Bedel <albeu@xxxxxxx>
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
[afa: ported from Linux 3d81216fde465e76c5eae98f61d3666163634395]
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
drivers/reset/core.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index 4355c3415eb0..93fbaeccafd2 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -236,8 +236,11 @@ struct reset_control *of_reset_control_get(struct device_node *node,
{
int index = 0;
- if (id)
+ if (id) {
index = of_property_match_string(node, "reset-names", id);
+ if (index < 0)
+ return ERR_PTR(-ENOENT);
+ }
return of_reset_control_get_by_index(node, index);
}
--
2.30.2
