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backlight: l4f00242t03: export and use devm_gpio_request_one()

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The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_gpio_request_one() for these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Alberto Panizzo <alberto@amarulasolutions.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2012-07-30 14:40:47 -07:00 committed by Linus Torvalds
parent 4405d5d9dd
commit 62a5c075ba
1 changed files with 11 additions and 20 deletions
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31
drivers/video/backlight/l4f00242t03.c
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@ -175,28 +175,27 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
priv->spi = spi;
ret = gpio_request_one(pdata->reset_gpio, GPIOF_OUT_INIT_HIGH,
"lcd l4f00242t03 reset");
ret = devm_gpio_request_one(&spi->dev, pdata->reset_gpio,
GPIOF_OUT_INIT_HIGH, "lcd l4f00242t03 reset");
if (ret) {
dev_err(&spi->dev,
"Unable to get the lcd l4f00242t03 reset gpio.\n");
return ret;
}
ret = gpio_request_one(pdata->data_enable_gpio, GPIOF_OUT_INIT_LOW,
"lcd l4f00242t03 data enable");
ret = devm_gpio_request_one(&spi->dev, pdata->data_enable_gpio,
GPIOF_OUT_INIT_LOW, "lcd l4f00242t03 data enable");
if (ret) {
dev_err(&spi->dev,
"Unable to get the lcd l4f00242t03 data en gpio.\n");
goto err;
return ret;
}
priv->io_reg = regulator_get(&spi->dev, "vdd");
if (IS_ERR(priv->io_reg)) {
ret = PTR_ERR(priv->io_reg);
dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",
__func__);
goto err2;
return PTR_ERR(priv->io_reg);
}
priv->core_reg = regulator_get(&spi->dev, "vcore");
@ -204,14 +203,14 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
ret = PTR_ERR(priv->core_reg);
dev_err(&spi->dev, "%s: Unable to get the core regulator\n",
__func__);
goto err3;
goto err1;
}
priv->ld = lcd_device_register("l4f00242t03",
&spi->dev, priv, &l4f_ops);
if (IS_ERR(priv->ld)) {
ret = PTR_ERR(priv->ld);
goto err4;
goto err2;
}
/* Init the LCD */
@ -223,14 +222,10 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
return 0;
err4:
regulator_put(priv->core_reg);
err3:
regulator_put(priv->io_reg);
err2:
gpio_free(pdata->data_enable_gpio);
err:
gpio_free(pdata->reset_gpio);
regulator_put(priv->core_reg);
err1:
regulator_put(priv->io_reg);
return ret;
}
@ -238,16 +233,12 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
static int __devexit l4f00242t03_remove(struct spi_device *spi)
{
struct l4f00242t03_priv *priv = dev_get_drvdata(&spi->dev);
struct l4f00242t03_pdata *pdata = priv->spi->dev.platform_data;
l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN);
lcd_device_unregister(priv->ld);
dev_set_drvdata(&spi->dev, NULL);
gpio_free(pdata->data_enable_gpio);
gpio_free(pdata->reset_gpio);
regulator_put(priv->io_reg);
regulator_put(priv->core_reg);