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regulator: core: request only valid gpio pins for regulator enable

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Commit 65f735082d ("regulator: core: Add core support for GPIO controlled
enable lines") introduced enable gpio entry in regulator configuration
structure. Some drivers use '-1' as a placeholder for marking that such
gpio line is not available, because '0' is considered as a valid gpio
number. This patch fixes initialization of such drivers (like MAX8952
on UniversalC210 board), when '-1' is provided as enable gpio pin in the
regulator's platform data.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Marek Szyprowski 2012-08-09 16:33:00 +02:00 committed by Mark Brown
parent e76ab829cc
commit b2a1ef473b
1 changed files with 1 additions and 1 deletions
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2
drivers/regulator/core.c
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@ -3217,7 +3217,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
dev_set_drvdata(&rdev->dev, rdev);
if (config->ena_gpio) {
if (config->ena_gpio && gpio_is_valid(config->ena_gpio)) {
ret = gpio_request_one(config->ena_gpio,
GPIOF_DIR_OUT | config->ena_gpio_flags,
rdev_get_name(rdev));