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Subject[PATCH 5/7] backlight: lms283gf05: use devm_gpio_request()
Date
The devm_ functions allocate memory that is released when a driver
detaches. This patch uses devm_gpio_request of these functions.

Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/video/backlight/lms283gf05.c | 24 ++++++------------------
1 files changed, 6 insertions(+), 18 deletions(-)

diff --git a/drivers/video/backlight/lms283gf05.c b/drivers/video/backlight/lms283gf05.c
index a9f2c36..ea43f22 100644
--- a/drivers/video/backlight/lms283gf05.c
+++ b/drivers/video/backlight/lms283gf05.c
@@ -158,29 +158,27 @@ static int __devinit lms283gf05_probe(struct spi_device *spi)
int ret = 0;

if (pdata != NULL) {
- ret = gpio_request(pdata->reset_gpio, "LMS285GF05 RESET");
+ ret = devm_gpio_request(&spi->dev, pdata->reset_gpio,
+ "LMS285GF05 RESET");
if (ret)
return ret;

ret = gpio_direction_output(pdata->reset_gpio,
!pdata->reset_inverted);
if (ret)
- goto err;
+ return ret;
}

st = devm_kzalloc(&spi->dev, sizeof(struct lms283gf05_state),
GFP_KERNEL);
if (st == NULL) {
dev_err(&spi->dev, "No memory for device state\n");
- ret = -ENOMEM;
- goto err;
+ return -ENOMEM;
}

ld = lcd_device_register("lms283gf05", &spi->dev, st, &lms_ops);
- if (IS_ERR(ld)) {
- ret = PTR_ERR(ld);
- goto err;
- }
+ if (IS_ERR(ld))
+ return PTR_ERR(ld);

st->spi = spi;
st->ld = ld;
@@ -193,24 +191,14 @@ static int __devinit lms283gf05_probe(struct spi_device *spi)
lms283gf05_toggle(spi, disp_initseq, ARRAY_SIZE(disp_initseq));

return 0;
-
-err:
- if (pdata != NULL)
- gpio_free(pdata->reset_gpio);
-
- return ret;
}

static int __devexit lms283gf05_remove(struct spi_device *spi)
{
struct lms283gf05_state *st = dev_get_drvdata(&spi->dev);
- struct lms283gf05_pdata *pdata = st->spi->dev.platform_data;

lcd_device_unregister(st->ld);

- if (pdata != NULL)
- gpio_free(pdata->reset_gpio);
-
return 0;
}

--
1.7.1



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