Merge tag 'pinctrl-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Some fallout in the pin control subsystem in the first week after the
  merge window, some minor fixes so I'd like to get it to you ASAP.

   - fix a serious kernel panic on the Mediatek driver with the external
     interrupt controller.

   - fix an uninitialized compiler warning in the owl (actions) driver.

   - allocation failure in the pinctrl-single driver.

   - pointer overwrite problem in the i.MX driver.

   - fix a small compiler warning"

* tag 'pinctrl-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: mt7622: fix a kernel panic when pio don't work as EINT controller
  pinctrl: actions: Fix uninitialized error in owl_pin_config_set()
  pinctrl: single: Add allocation failure checking of saved_vals
  pinctrl: devicetree: Fix pctldev pointer overwrite
  pinctrl: mediatek: remove redundant return value check of platform_get_resource()

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/pinctrl/mediatek/pinctrl-mt7622.c b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
index ad6da1184c9f..e3f1ab2290fc 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt7622.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
@@ -1459,6 +1459,9 @@ static int mtk_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
 	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
 	unsigned long eint_n;
 
+	if (!hw->eint)
+		return -ENOTSUPP;
+
 	eint_n = offset;
 
 	return mtk_eint_find_irq(hw->eint, eint_n);
@@ -1471,7 +1474,8 @@ static int mtk_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
 	unsigned long eint_n;
 	u32 debounce;
 
-	if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
+	if (!hw->eint ||
+	    pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
 		return -ENOTSUPP;
 
 	debounce = pinconf_to_config_argument(config);