Commit 6e4f3db8 authored by lijiazi's avatar lijiazi Committed by Linus Walleij
Browse files

pinctrl: just return if no valid maps 



If there is a problem with a pinctrl node of a device,
for example, config child node do not have prop specified in
dt_params, num_maps maybe 0. On this condition, no need remember
this map.

Signed-off-by: default avatarlijiazi <lijiazi@xiaomi.com>
Link: https://lore.kernel.org/r/29421e7720443a2454830963186f00583c76ce1e.1572588550.git.lijiazi@xiaomi.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent ee198352

drivers/pinctrl/devicetree.c

+10 −0
Original line number Diff line number Diff line
@@ -162,6 +162,16 @@ static int dt_to_map_one_config(struct pinctrl *p, 
	ret = ops->dt_node_to_map(pctldev, np_config, &map, &num_maps);

	if (ret < 0)

		return ret;

	else if (num_maps == 0) {

		/*

		 * If we have no valid maps (maybe caused by empty pinctrl node

		 * or typing error) ther is no need remember this, so just

		 * return.

		 */

		dev_info(p->dev,

			 "there is not valid maps for state %s\n", statename);

		return 0;

	}



	/* Stash the mapping table chunk away for later use */

	return dt_remember_or_free_map(p, statename, pctldev, map, num_maps);

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