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gpiolib: define gpio suffixes globally

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Avoid multiple identical definitions of the gpio suffix strings by putting
them into a global constant array.

Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Rojhalat Ibrahim 2015-02-11 17:27:55 +01:00 committed by Linus Walleij
parent 1feb57a245
commit 7f2e553a71
2 changed files with 9 additions and 8 deletions
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14
drivers/gpio/gpiolib.c
View file

@ -1662,19 +1662,18 @@ static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
unsigned int idx,
enum gpio_lookup_flags *flags)
{
static const char * const suffixes[] = { "gpios", "gpio" };
char prop_name[32]; /* 32 is max size of property name */
enum of_gpio_flags of_flags;
struct gpio_desc *desc;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(suffixes); i++) {
for (i = 0; i < ARRAY_SIZE(gpio_suffixes); i++) {
if (con_id)
snprintf(prop_name, sizeof(prop_name), "%s-%s", con_id,
suffixes[i]);
gpio_suffixes[i]);
else
snprintf(prop_name, sizeof(prop_name), "%s",
suffixes[i]);
gpio_suffixes[i]);
desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx,
&of_flags);
@ -1695,7 +1694,6 @@ static struct gpio_desc *acpi_find_gpio(struct device *dev, const char *con_id,
unsigned int idx,
enum gpio_lookup_flags *flags)
{
static const char * const suffixes[] = { "gpios", "gpio" };
struct acpi_device *adev = ACPI_COMPANION(dev);
struct acpi_gpio_info info;
struct gpio_desc *desc;
@ -1703,13 +1701,13 @@ static struct gpio_desc *acpi_find_gpio(struct device *dev, const char *con_id,
int i;
/* Try first from _DSD */
for (i = 0; i < ARRAY_SIZE(suffixes); i++) {
for (i = 0; i < ARRAY_SIZE(gpio_suffixes); i++) {
if (con_id && strcmp(con_id, "gpios")) {
snprintf(propname, sizeof(propname), "%s-%s",
con_id, suffixes[i]);
con_id, gpio_suffixes[i]);
} else {
snprintf(propname, sizeof(propname), "%s",
suffixes[i]);
gpio_suffixes[i]);
}
desc = acpi_get_gpiod_by_index(adev, propname, idx, &info);

3
drivers/gpio/gpiolib.h
View file

@ -27,6 +27,9 @@ struct acpi_gpio_info {
bool active_low;
};
/* gpio suffixes used for ACPI and device tree lookup */
static const char * const gpio_suffixes[] = { "gpios", "gpio" };
#ifdef CONFIG_ACPI
void acpi_gpiochip_add(struct gpio_chip *chip);
void acpi_gpiochip_remove(struct gpio_chip *chip);