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leds: leds-lt3593: set devm_gpio_request_one() flags param correctly 

The devm_gpio_request_one() flags parameter was set to:

  GPIOF_DIR_OUT | state

GPIOF_DIR_OUT and GPIOF_DIR_IN are defined as below:

  GPIOF_DIR_OUT   (0 << 0)
  GPIOF_DIR_IN    (1 << 0)

So, when 'state' is 1, the gpio pin can be set as input, instead
of output.

To prevent this problem, GPIOF_OUT_INIT flags should be used when
using devm_gpio_request_one().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Jingoo Han 2013-03-07 18:37:38 -08:00 committed by Bryan Wu
parent e9dd68cf14
commit 84f6942cde
1 changed files with 3 additions and 2 deletions
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5
drivers/leds/leds-lt3593.c
View File

@ -106,8 +106,9 @@ static int create_lt3593_led(const struct gpio_led *template,
if (!template->retain_state_suspended)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
ret = devm_gpio_request_one(parent, template->gpio,
GPIOF_DIR_OUT | state, template->name);
ret = devm_gpio_request_one(parent, template->gpio, state ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
template->name);
if (ret < 0)
return ret;