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drivers/video/backlight: use devm_ functions

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The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Julia Lawall
2012-03-23 15:02:00 -07:00
committed by Linus Torvalds
parent 1107d40a50
commit ce969228fd
8 changed files with 18 additions and 47 deletions
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9
drivers/video/backlight/omap1_bl.c
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@@ -141,7 +141,8 @@ static int omapbl_probe(struct platform_device *pdev)
if (!pdata)
return -ENXIO;
bl = kzalloc(sizeof(struct omap_backlight), GFP_KERNEL);
bl = devm_kzalloc(&pdev->dev, sizeof(struct omap_backlight),
GFP_KERNEL);
if (unlikely(!bl))
return -ENOMEM;
@@ -150,10 +151,8 @@ static int omapbl_probe(struct platform_device *pdev)
props.max_brightness = OMAPBL_MAX_INTENSITY;
dev = backlight_device_register("omap-bl", &pdev->dev, bl, &omapbl_ops,
&props);
if (IS_ERR(dev)) {
kfree(bl);
if (IS_ERR(dev))
return PTR_ERR(dev);
}
bl->powermode = FB_BLANK_POWERDOWN;
bl->current_intensity = 0;
@@ -177,10 +176,8 @@ static int omapbl_probe(struct platform_device *pdev)
static int omapbl_remove(struct platform_device *pdev)
{
struct backlight_device *dev = platform_get_drvdata(pdev);
struct omap_backlight *bl = dev_get_drvdata(&dev->dev);
backlight_device_unregister(dev);
kfree(bl);
return 0;
}