ramips: pinctrl: return proper error if pinctrl0 is empty

Children of the pinctrl0 node are optional. Return EINVAL (=missing)
instead of 0. Fixes a hang if the pinctrl0 has no children.

Signed-off-by: Mathias Kresin <dev@kresin.me>
Acked-by: John Crispin <john@phrozen.org>
This commit is contained in:
Mathias Kresin 2017-07-25 20:23:28 +02:00
parent bf5d32af2a
commit a3995a6785

View file

@ -193,7 +193,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ }
+
+ if (!max_maps)
+ return max_maps;
+ return -EINVAL;
+
+ *map = kzalloc(max_maps * sizeof(struct pinctrl_map), GFP_KERNEL);
+ if (!*map)