drivers/video/backlight: use devm_ functions
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>
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index c915e3b..e833ac7 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -129,7 +129,8 @@
return -EINVAL;
}
- data = kzalloc(sizeof(struct max8925_backlight_data), GFP_KERNEL);
+ data = devm_kzalloc(&pdev->dev, sizeof(struct max8925_backlight_data),
+ GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
strncpy(name, res->name, MAX8925_NAME_SIZE);
@@ -143,7 +144,6 @@
&max8925_backlight_ops, &props);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
- kfree(data);
return PTR_ERR(bl);
}
bl->props.brightness = MAX_BRIGHTNESS;
@@ -165,17 +165,14 @@
return 0;
out:
backlight_device_unregister(bl);
- kfree(data);
return ret;
}
static int __devexit max8925_backlight_remove(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
- struct max8925_backlight_data *data = bl_get_data(bl);
backlight_device_unregister(bl);
- kfree(data);
return 0;
}