From 19b26d92dfb70f56440c187a20c49102ab648b97 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 24 Jan 2017 17:28:22 +0200 Subject: [PATCH] pinctrl: intel: merrifield: Add missed check in mrfld_config_set() Not every pin can be configured. Add missed check to prevent access violation. Fixes: 4e80c8f50574 ("pinctrl: intel: Add Intel Merrifield pin controller support") Acked-by: Mika Westerberg Signed-off-by: Andy Shevchenko Signed-off-by: Linus Walleij --- drivers/pinctrl/intel/pinctrl-merrifield.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pinctrl/intel/pinctrl-merrifield.c b/drivers/pinctrl/intel/pinctrl-merrifield.c index b21896126f76..4d4ef42a39b5 100644 --- a/drivers/pinctrl/intel/pinctrl-merrifield.c +++ b/drivers/pinctrl/intel/pinctrl-merrifield.c @@ -794,6 +794,9 @@ static int mrfld_config_set(struct pinctrl_dev *pctldev, unsigned int pin, unsigned int i; int ret; + if (!mrfld_buf_available(mp, pin)) + return -ENOTSUPP; + for (i = 0; i < nconfigs; i++) { switch (pinconf_to_config_param(configs[i])) { case PIN_CONFIG_BIAS_DISABLE: