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leds: renesas: set gpio_request_one() flags param correctly 

The gpio_request_one() flags parameter was set to:

  GPIOF_DIR_OUT | !!brightness

GPIOF_DIR_OUT and GPIOF_DIR_IN are defined as below:
  GPIOF_DIR_OUT   (0 << 0)
  GPIOF_DIR_IN    (1 << 0)

So, when '!!brightness' 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 gpio_request_one().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
wifi-calibration
Jingoo Han 2013-03-07 18:39:04 -08:00 committed by Bryan Wu
parent 9d04cbaadf
commit 901b74a3c4
1 changed files with 2 additions and 1 deletions
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3
drivers/leds/leds-renesas-tpu.c
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@ -205,7 +205,8 @@ static void r_tpu_set_pin(struct r_tpu_priv *p, enum r_tpu_pin new_state,
gpio_free(cfg->pin_gpio_fn);
if (new_state == R_TPU_PIN_GPIO)
gpio_request_one(cfg->pin_gpio, GPIOF_DIR_OUT | !!brightness,
gpio_request_one(cfg->pin_gpio, !!brightness ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
cfg->name);
if (new_state == R_TPU_PIN_GPIO_FN)