diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-01-24 17:28:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-09 08:08:29 +0100 |
| commit | 3d8ec7d2d5f9fdb83617f044ad9bcfa3cf6830b9 (patch) | |
| tree | 7d7b7d7296c6fbb8f9ad9e84818f41100ba311a1 | |
| parent | 2cf6c49264e40e395e73fef11f487b10b05548b4 (diff) | |
pinctrl: intel: merrifield: Add missed check in mrfld_config_set()
commit 19b26d92dfb70f56440c187a20c49102ab648b97 upstream.
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 <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-merrifield.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-merrifield.c b/drivers/pinctrl/intel/pinctrl-merrifield.c index 7826c7f0cb7c..9931be6af0ca 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: |