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leds: leds-ns2: set devm_gpio_request_one() flags param correctly 

The devm_gpio_request_one() flags parameter was set to:

  GPIOF_DIR_OUT | gpio_get_value(template->cmd)

GPIOF_DIR_OUT and GPIOF_DIR_IN are defined as below:

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

So, when 'gpio_get_value(template->cmd)' 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().

Same goes for 'gpio_get_value(template->slow)' case.

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 18:38:26 -08:00 committed by Bryan Wu
parent 84f6942cde
commit 9d04cbaadf
1 changed files with 4 additions and 2 deletions
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6
drivers/leds/leds-ns2.c
View File

@ -193,7 +193,8 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat,
enum ns2_led_modes mode;
ret = devm_gpio_request_one(&pdev->dev, template->cmd,
GPIOF_DIR_OUT | gpio_get_value(template->cmd),
gpio_get_value(template->cmd) ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
template->name);
if (ret) {
dev_err(&pdev->dev, "%s: failed to setup command GPIO\n",
@ -202,7 +203,8 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat,
}
ret = devm_gpio_request_one(&pdev->dev, template->slow,
GPIOF_DIR_OUT | gpio_get_value(template->slow),
gpio_get_value(template->slow) ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
template->name);
if (ret) {
dev_err(&pdev->dev, "%s: failed to setup slow GPIO\n",