From f673934c615987abe16919ede8fcd3ff6805d0d6 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Mon, 30 Jul 2012 14:40:37 -0700 Subject: [PATCH] backlight: ot200_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 Acked-by: Christian Gmeiner Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/backlight/ot200_bl.c | 9 +++------ 1 file 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; } -- 2.7.4