diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0701-gpio-Enable-nonexclusive-gpiods-from-DT-nodes.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0701-gpio-Enable-nonexclusive-gpiods-from-DT-nodes.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0701-gpio-Enable-nonexclusive-gpiods-from-DT-nodes.patch b/target/linux/brcm2708/patches-4.19/950-0701-gpio-Enable-nonexclusive-gpiods-from-DT-nodes.patch new file mode 100644 index 0000000000..e8e63a2798 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0701-gpio-Enable-nonexclusive-gpiods-from-DT-nodes.patch @@ -0,0 +1,34 @@ +From 76870d237adff4c8e419064e7d4f5a8ef87c1085 Mon Sep 17 00:00:00 2001 +From: Linus Walleij <linus.walleij@linaro.org> +Date: Thu, 6 Dec 2018 13:43:44 +0100 +Subject: [PATCH] gpio: Enable nonexclusive gpiods from DT nodes + +commit ec757001c818c175e6b610e8ef80c2a25d1ed1a5 upstream. + +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: b0ce7b29bfcd ("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> +--- + drivers/gpio/gpiolib.c | 2 ++ + 1 file changed, 2 insertions(+) + +--- a/drivers/gpio/gpiolib.c ++++ b/drivers/gpio/gpiolib.c +@@ -4053,6 +4053,8 @@ struct gpio_desc *gpiod_get_from_of_node + transitory = flags & OF_GPIO_TRANSITORY; + + ret = gpiod_request(desc, label); ++ if (ret == -EBUSY && (flags & GPIOD_FLAGS_BIT_NONEXCLUSIVE)) ++ return desc; + if (ret) + return ERR_PTR(ret); + |