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| author | Jingoo Han <jg1.han@samsung.com> | 2012-07-30 14:40:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-30 17:25:15 -0700 |
| commit | 5f9dd5c9fd4efacc9f8c36c0b3c17a4308bbe4d9 (patch) | |
| tree | 1032167c60a4cc9c9465944db3e252ba7c29a13e /drivers/video/backlight/atmel-pwm-bl.c | |
| parent | b4a74615a4729ca4e6903bd3027339c4e6e7ae03 (diff) | |
| download | lwn-5f9dd5c9fd4efacc9f8c36c0b3c17a4308bbe4d9.tar.gz lwn-5f9dd5c9fd4efacc9f8c36c0b3c17a4308bbe4d9.zip | |
backlight: atmel-pwm-bl: use devm_gpio_request()
The devm_ functions allocate memory that is released when a driver
detaches. This patch uses devm_gpio_request() for these functions.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/backlight/atmel-pwm-bl.c')
| -rw-r--r-- | drivers/video/backlight/atmel-pwm-bl.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c index cd64073d3f53..df1cbb7ef6ca 100644 --- a/drivers/video/backlight/atmel-pwm-bl.c +++ b/drivers/video/backlight/atmel-pwm-bl.c @@ -155,7 +155,8 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev) goto err_free_mem; if (pwmbl->gpio_on != -1) { - retval = gpio_request(pwmbl->gpio_on, "gpio_atmel_pwm_bl"); + retval = devm_gpio_request(&pdev->dev, pwmbl->gpio_on, + "gpio_atmel_pwm_bl"); if (retval) { pwmbl->gpio_on = -1; goto err_free_pwm; @@ -165,7 +166,7 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev) retval = gpio_direction_output(pwmbl->gpio_on, 0 ^ pdata->on_active_low); if (retval) - goto err_free_gpio; + goto err_free_pwm; } memset(&props, 0, sizeof(struct backlight_properties)); @@ -175,7 +176,7 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev) &atmel_pwm_bl_ops, &props); if (IS_ERR(bldev)) { retval = PTR_ERR(bldev); - goto err_free_gpio; + goto err_free_pwm; } pwmbl->bldev = bldev; @@ -197,9 +198,6 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev) err_free_bl_dev: platform_set_drvdata(pdev, NULL); backlight_device_unregister(bldev); -err_free_gpio: - if (pwmbl->gpio_on != -1) - gpio_free(pwmbl->gpio_on); err_free_pwm: pwm_channel_free(&pwmbl->pwmc); err_free_mem: @@ -210,10 +208,8 @@ static int __exit atmel_pwm_bl_remove(struct platform_device *pdev) { struct atmel_pwm_bl *pwmbl = platform_get_drvdata(pdev); - if (pwmbl->gpio_on != -1) { + if (pwmbl->gpio_on != -1) gpio_set_value(pwmbl->gpio_on, 0); - gpio_free(pwmbl->gpio_on); - } pwm_channel_disable(&pwmbl->pwmc); pwm_channel_free(&pwmbl->pwmc); backlight_device_unregister(pwmbl->bldev); |