From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Linus Walleij <linus.walleij@linaro.org>,
linux-gpio@vger.kernel.org,
Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v2] pinctrl: intel: merrifield: Add missed check in mrfld_config_set()
Date: Tue, 24 Jan 2017 17:28:22 +0200 [thread overview]
Message-ID: <20170124152822.17170-1-andriy.shevchenko@linux.intel.com> (raw)
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>
---
- drop second patch for now
- add Mika's ACK
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:
--
2.11.0
next reply other threads:[~2017-01-24 15:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-24 15:28 Andy Shevchenko [this message]
2017-01-26 14:33 ` [PATCH v2] pinctrl: intel: merrifield: Add missed check in mrfld_config_set() Linus Walleij
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