* [PATCH 2/7] backlight: ot200_bl: use devm_gpio_request()
@ 2012-06-13 11:19 Jingoo Han
2012-06-13 12:21 ` Christian Gmeiner
0 siblings, 1 reply; 2+ messages in thread
From: Jingoo Han @ 2012-06-13 11:19 UTC (permalink / raw)
To: 'Andrew Morton', 'LKML'
Cc: 'Richard Purdie', 'Christian Gmeiner',
'Jingoo Han', 'Axel Lin'
The devm_ functions allocate memory that is released when a driver
detaches. This patch uses devm_gpio_request of these functions.
CC: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/video/backlight/ot200_bl.c | 9 +++------
1 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/video/backlight/ot200_bl.c b/drivers/video/backlight/ot200_bl.c
index ef637ff..469cf0f 100644
--- a/drivers/video/backlight/ot200_bl.c
+++ b/drivers/video/backlight/ot200_bl.c
@@ -84,7 +84,8 @@ static int ot200_backlight_probe(struct platform_device *pdev)
int retval = 0;
/* request gpio */
- if (gpio_request(GPIO_DIMM, "ot200 backlight dimmer") < 0) {
+ if (devm_gpio_request(&pdev->dev, GPIO_DIMM,
+ "ot200 backlight dimmer") < 0) {
dev_err(&pdev->dev, "failed to request GPIO %d\n", GPIO_DIMM);
return -ENODEV;
}
@@ -93,8 +94,7 @@ static int ot200_backlight_probe(struct platform_device *pdev)
pwm_timer = cs5535_mfgpt_alloc_timer(7, MFGPT_DOMAIN_ANY);
if (!pwm_timer) {
dev_err(&pdev->dev, "MFGPT 7 not available\n");
- retval = -ENODEV;
- goto error_mfgpt_alloc;
+ return -ENODEV;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
@@ -131,8 +131,6 @@ static int ot200_backlight_probe(struct platform_device *pdev)
error_devm_kzalloc:
cs5535_mfgpt_free_timer(pwm_timer);
-error_mfgpt_alloc:
- gpio_free(GPIO_DIMM);
return retval;
}
@@ -149,7 +147,6 @@ static int ot200_backlight_remove(struct platform_device *pdev)
MAX_COMP2 - dim_table[100]);
cs5535_mfgpt_free_timer(pwm_timer);
- gpio_free(GPIO_DIMM);
return 0;
}
--
1.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH 2/7] backlight: ot200_bl: use devm_gpio_request()
2012-06-13 11:19 [PATCH 2/7] backlight: ot200_bl: use devm_gpio_request() Jingoo Han
@ 2012-06-13 12:21 ` Christian Gmeiner
0 siblings, 0 replies; 2+ messages in thread
From: Christian Gmeiner @ 2012-06-13 12:21 UTC (permalink / raw)
To: Jingoo Han; +Cc: Andrew Morton, LKML, Richard Purdie, Axel Lin
2012/6/13 Jingoo Han <jg1.han@samsung.com>:
> The devm_ functions allocate memory that is released when a driver
> detaches. This patch uses devm_gpio_request of these functions.
>
> CC: Christian Gmeiner <christian.gmeiner@gmail.com>
> Cc: Richard Purdie <rpurdie@rpsys.net>
> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
> ---
> drivers/video/backlight/ot200_bl.c | 9 +++------
> 1 files changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/video/backlight/ot200_bl.c b/drivers/video/backlight/ot200_bl.c
> index ef637ff..469cf0f 100644
> --- a/drivers/video/backlight/ot200_bl.c
> +++ b/drivers/video/backlight/ot200_bl.c
> @@ -84,7 +84,8 @@ static int ot200_backlight_probe(struct platform_device *pdev)
> int retval = 0;
>
> /* request gpio */
> - if (gpio_request(GPIO_DIMM, "ot200 backlight dimmer") < 0) {
> + if (devm_gpio_request(&pdev->dev, GPIO_DIMM,
> + "ot200 backlight dimmer") < 0) {
> dev_err(&pdev->dev, "failed to request GPIO %d\n", GPIO_DIMM);
> return -ENODEV;
> }
> @@ -93,8 +94,7 @@ static int ot200_backlight_probe(struct platform_device *pdev)
> pwm_timer = cs5535_mfgpt_alloc_timer(7, MFGPT_DOMAIN_ANY);
> if (!pwm_timer) {
> dev_err(&pdev->dev, "MFGPT 7 not available\n");
> - retval = -ENODEV;
> - goto error_mfgpt_alloc;
> + return -ENODEV;
> }
>
> data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
> @@ -131,8 +131,6 @@ static int ot200_backlight_probe(struct platform_device *pdev)
>
> error_devm_kzalloc:
> cs5535_mfgpt_free_timer(pwm_timer);
> -error_mfgpt_alloc:
> - gpio_free(GPIO_DIMM);
> return retval;
> }
>
> @@ -149,7 +147,6 @@ static int ot200_backlight_remove(struct platform_device *pdev)
> MAX_COMP2 - dim_table[100]);
>
> cs5535_mfgpt_free_timer(pwm_timer);
> - gpio_free(GPIO_DIMM);
>
> return 0;
> }
> --
> 1.7.1
>
Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-06-13 11:19 [PATCH 2/7] backlight: ot200_bl: use devm_gpio_request() Jingoo Han
2012-06-13 12:21 ` Christian Gmeiner
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