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pinctrl: intel: merrifield: Add missed check in mrfld_config_set()

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Not every pin can be configured. Add missed check to prevent access
violation.

Fixes: 4e80c8f505 ("pinctrl: intel: Add Intel Merrifield pin controller support")
Acked-by: Mika Westerberg <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Andy Shevchenko 2017-01-24 17:28:22 +02:00 • committed by Linus Walleij
commit 19b26d92df
1 changed files with 3 additions and 0 deletions
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3
drivers/pinctrl/intel/pinctrl-merrifield.c
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@ -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: