diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
commit | d635711daa98be86d4c7fd01499c34f566b54ccb (patch) | |
tree | aa5cc3760a27c3d57146498cb82fa549547de06c /drivers/pinctrl/core.c | |
parent | c91265cd0efb83778f015b4d4b1129bd2cfd075e (diff) |
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/pinctrl/core.c')
-rw-r--r-- | drivers/pinctrl/core.c | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 2686a4450..f67a8b7a4 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -481,18 +481,12 @@ int pinctrl_get_group_pins(struct pinctrl_dev *pctldev, const char *pin_group, } EXPORT_SYMBOL_GPL(pinctrl_get_group_pins); -/** - * pinctrl_find_gpio_range_from_pin() - locate the GPIO range for a pin - * @pctldev: the pin controller device to look in - * @pin: a controller-local number to find the range for - */ struct pinctrl_gpio_range * -pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev, - unsigned int pin) +pinctrl_find_gpio_range_from_pin_nolock(struct pinctrl_dev *pctldev, + unsigned int pin) { struct pinctrl_gpio_range *range; - mutex_lock(&pctldev->mutex); /* Loop over the ranges */ list_for_each_entry(range, &pctldev->gpio_ranges, node) { /* Check if we're in the valid range */ @@ -500,15 +494,32 @@ pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev, int a; for (a = 0; a < range->npins; a++) { if (range->pins[a] == pin) - goto out; + return range; } } else if (pin >= range->pin_base && pin < range->pin_base + range->npins) - goto out; + return range; } - range = NULL; -out: + + return NULL; +} +EXPORT_SYMBOL_GPL(pinctrl_find_gpio_range_from_pin_nolock); + +/** + * pinctrl_find_gpio_range_from_pin() - locate the GPIO range for a pin + * @pctldev: the pin controller device to look in + * @pin: a controller-local number to find the range for + */ +struct pinctrl_gpio_range * +pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev, + unsigned int pin) +{ + struct pinctrl_gpio_range *range; + + mutex_lock(&pctldev->mutex); + range = pinctrl_find_gpio_range_from_pin_nolock(pctldev, pin); mutex_unlock(&pctldev->mutex); + return range; } EXPORT_SYMBOL_GPL(pinctrl_find_gpio_range_from_pin); |