diff options
| -rw-r--r-- | drivers/pinctrl/devicetree.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c index 1a300374a16d..674920daac26 100644 --- a/drivers/pinctrl/devicetree.c +++ b/drivers/pinctrl/devicetree.c @@ -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); |