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 <al...@free.fr>
---
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 3cbc764..fd6ac9b 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -265,9 +265,12 @@ struct reset_control *of_reset_control_get(struct
device_node *node,
int rstc_id;
int ret;
- if (id)
+ if (id) {
index = of_property_match_string(node,
"reset-names", id);
+ if (index < 0)
+ return ERR_PTR(-ENOENT);
+ }
ret = of_parse_phandle_with_args(node, "resets", "#reset-cells",
index, &args);
if (ret)
--
2.0.0
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