[PATCH] mailbox: return error in mbox_request_channel_byname

[Fabien Dessenne]

If 'name' is not found in the "mbox-names" list, return an error

Signed-off-by: Fabien Dessenne <fabien.dessenne@xxxxxx>
---
 drivers/mailbox/mailbox.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c
index 674b35f..a31970a 100644
--- a/drivers/mailbox/mailbox.c
+++ b/drivers/mailbox/mailbox.c
@@ -391,11 +391,12 @@ struct mbox_chan *mbox_request_channel_byname(struct mbox_client *cl,
 
 	of_property_for_each_string(np, "mbox-names", prop, mbox_name) {
 		if (!strncmp(name, mbox_name, strlen(name)))
-			break;
+			return mbox_request_channel(cl, index);
 		index++;
 	}
 
-	return mbox_request_channel(cl, index);
+	dev_err(cl->dev, "%s() mbox %s not found\n", __func__, name);
+	return ERR_PTR(-EINVAL);
 }
 EXPORT_SYMBOL_GPL(mbox_request_channel_byname);
 
-- 
2.7.4