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author | Ingo Molnar <mingo@kernel.org> | 2018-02-06 21:12:31 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2018-02-06 21:12:31 +0100 |
commit | 82845079160817cc6ac64e5321bbd935e0a47b3a (patch) | |
tree | 0886d1d52428e9db14536cae4b37db896e7c360a /drivers/gpio/devres.c | |
parent | 32e839dda3ba576943365f0f5817ce5c843137dc (diff) | |
parent | 68c5735eaa5e680e701c9a2d1e3c7880bdf5ab66 (diff) | |
download | linux-stable-82845079160817cc6ac64e5321bbd935e0a47b3a.tar.gz linux-stable-82845079160817cc6ac64e5321bbd935e0a47b3a.tar.bz2 linux-stable-82845079160817cc6ac64e5321bbd935e0a47b3a.zip |
Merge branch 'linus' into sched/urgent, to resolve conflicts
Conflicts:
arch/arm64/kernel/entry.S
arch/x86/Kconfig
include/linux/sched/mm.h
kernel/fork.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpio/devres.c')
-rw-r--r-- | drivers/gpio/devres.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c index afbff155a0ba..e82cc763633c 100644 --- a/drivers/gpio/devres.c +++ b/drivers/gpio/devres.c @@ -125,6 +125,48 @@ struct gpio_desc *__must_check devm_gpiod_get_index(struct device *dev, EXPORT_SYMBOL(devm_gpiod_get_index); /** + * devm_gpiod_get_from_of_node() - obtain a GPIO from an OF node + * @dev: device for lifecycle management + * @node: handle of the OF node + * @propname: name of the DT property representing the GPIO + * @index: index of the GPIO to obtain for the consumer + * @dflags: GPIO initialization flags + * @label: label to attach to the requested GPIO + * + * Returns: + * On successful request the GPIO pin is configured in accordance with + * provided @dflags. + * + * In case of error an ERR_PTR() is returned. + */ +struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev, + struct device_node *node, + const char *propname, int index, + enum gpiod_flags dflags, + const char *label) +{ + struct gpio_desc **dr; + struct gpio_desc *desc; + + dr = devres_alloc(devm_gpiod_release, sizeof(struct gpio_desc *), + GFP_KERNEL); + if (!dr) + return ERR_PTR(-ENOMEM); + + desc = gpiod_get_from_of_node(node, propname, index, dflags, label); + if (IS_ERR(desc)) { + devres_free(dr); + return desc; + } + + *dr = desc; + devres_add(dev, dr); + + return desc; +} +EXPORT_SYMBOL(devm_gpiod_get_from_of_node); + +/** * devm_fwnode_get_index_gpiod_from_child - get a GPIO descriptor from a * device's child node * @dev: GPIO consumer |