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ramips: pinctrl: return proper error if pinctrl0 is empty

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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
1 changed files with 1 additions and 1 deletions
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2
target/linux/ramips/patches-4.9/0025-pinctrl-ralink-add-pinctrl-driver.patch
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@ -193,7 +193,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ } + }
+ +
+ if (!max_maps) + if (!max_maps)
+ return max_maps; + return -EINVAL;
+ +
+ *map = kzalloc(max_maps * sizeof(struct pinctrl_map), GFP_KERNEL); + *map = kzalloc(max_maps * sizeof(struct pinctrl_map), GFP_KERNEL);
+ if (!*map) + if (!*map)