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authorJulia Lawall <Julia.Lawall@lip6.fr>2012-03-23 15:02:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 16:58:33 -0700
commit1107d40a50956146d1272f5cffcdf1d83f7e703e (patch)
tree54a43a24c7d6d53db2146183a821667fe0b40895 /drivers/video
parent462dd83833065a6b3add3f102f4fe69efa1422e9 (diff)
drivers/video/backlight/wm831x_bl.c: 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> Acked-by: 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>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/backlight/wm831x_bl.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/video/backlight/wm831x_bl.c b/drivers/video/backlight/wm831x_bl.c
index 4e915f5eca99..5d365deb5f82 100644
--- a/drivers/video/backlight/wm831x_bl.c
+++ b/drivers/video/backlight/wm831x_bl.c
@@ -186,7 +186,7 @@ static int wm831x_backlight_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
- data = kzalloc(sizeof(*data), GFP_KERNEL);
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
@@ -200,7 +200,6 @@ static int wm831x_backlight_probe(struct platform_device *pdev)
&wm831x_backlight_ops, &props);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
- kfree(data);
return PTR_ERR(bl);
}
@@ -211,7 +210,6 @@ static int wm831x_backlight_probe(struct platform_device *pdev)
/* Disable the DCDC if it was started so we can bootstrap */
wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE, WM831X_DC4_ENA, 0);
-
backlight_update_status(bl);
return 0;
@@ -220,10 +218,8 @@ static int wm831x_backlight_probe(struct platform_device *pdev)
static int wm831x_backlight_remove(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
- struct wm831x_backlight_data *data = bl_get_data(bl);
backlight_device_unregister(bl);
- kfree(data);
return 0;
}