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gpio: Enable nonexclusive gpiods from DT nodes

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This makes gpiod_get_from_of_node() respect the
GPIOD_FLAGS_BIT_NONEXCLUSIVE flag which is especially
nice when getting regulator GPIOs right out of device
tree nodes.

Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: b0ce7b29bf ("regulator/gpio: Allow nonexclusive GPIO access")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Linus Walleij 2018-12-06 13:43:44 +01:00 committed by Mark Brown
parent d03c63dbca
commit ec757001c8
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1 changed files with 2 additions and 0 deletions
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2
drivers/gpio/gpiolib.c
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@ -4204,6 +4204,8 @@ struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
transitory = flags & OF_GPIO_TRANSITORY; transitory = flags & OF_GPIO_TRANSITORY;
ret = gpiod_request(desc, label); ret = gpiod_request(desc, label);
if (ret == -EBUSY && (flags & GPIOD_FLAGS_BIT_NONEXCLUSIVE))
return desc;
if (ret) if (ret)
return ERR_PTR(ret); return ERR_PTR(ret);