From 70b36378d44d7f5e62458a830b1a9bb1c570f28a Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 12 Mar 2012 21:38:29 +0100 Subject: pinctrl: fix error path in pinconf_map_to_setting() The code was using the union member setting->data.configs.group_or_pin to store a potential error code, but since that member is unsigned the < 0 comparison was not true, letting errors pass through, ending up as mapped to pin "-22". Fix this up and print the error. Acked-by: Stephen Warren Signed-off-by: Linus Walleij --- drivers/pinctrl/pinconf.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) (limited to 'drivers/pinctrl') diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c index 84869f28b10..b40ac1b4fb1 100644 --- a/drivers/pinctrl/pinconf.c +++ b/drivers/pinctrl/pinconf.c @@ -282,21 +282,28 @@ int pinconf_map_to_setting(struct pinctrl_map const *map, struct pinctrl_setting *setting) { struct pinctrl_dev *pctldev = setting->pctldev; + int pin; switch (setting->type) { case PIN_MAP_TYPE_CONFIGS_PIN: - setting->data.configs.group_or_pin = - pin_get_from_name(pctldev, - map->data.configs.group_or_pin); - if (setting->data.configs.group_or_pin < 0) - return setting->data.configs.group_or_pin; + pin = pin_get_from_name(pctldev, + map->data.configs.group_or_pin); + if (pin < 0) { + dev_err(pctldev->dev, "could not map pin config for \"%s\"", + map->data.configs.group_or_pin); + return pin; + } + setting->data.configs.group_or_pin = pin; break; case PIN_MAP_TYPE_CONFIGS_GROUP: - setting->data.configs.group_or_pin = - pinctrl_get_group_selector(pctldev, - map->data.configs.group_or_pin); - if (setting->data.configs.group_or_pin < 0) - return setting->data.configs.group_or_pin; + pin = pinctrl_get_group_selector(pctldev, + map->data.configs.group_or_pin); + if (pin < 0) { + dev_err(pctldev->dev, "could not map group config for \"%s\"", + map->data.configs.group_or_pin); + return pin; + } + setting->data.configs.group_or_pin = pin; break; default: return -EINVAL; -- cgit v1.2.3-70-g09d2