4.4-stable review patch. If anyone has any objections, please let me know.
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From: Alexey Khoroshilov khoroshilov@ispras.ru
[ Upstream commit 0eb3fba8c68275f0122f65f7316efaaf86448016 ]
If adp5520_bl_setup() fails, sysfs group left unremoved.
By the way, fix overcomplicated assignement of error code.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov khoroshilov@ispras.ru Acked-by: Michael Hennerich michael.hennerich@analog.com Signed-off-by: Lee Jones lee.jones@linaro.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/video/backlight/adp5520_bl.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
--- a/drivers/video/backlight/adp5520_bl.c +++ b/drivers/video/backlight/adp5520_bl.c @@ -332,10 +332,18 @@ static int adp5520_bl_probe(struct platf }
platform_set_drvdata(pdev, bl); - ret |= adp5520_bl_setup(bl); + ret = adp5520_bl_setup(bl); + if (ret) { + dev_err(&pdev->dev, "failed to setup\n"); + if (data->pdata->en_ambl_sens) + sysfs_remove_group(&bl->dev.kobj, + &adp5520_bl_attr_group); + return ret; + } + backlight_update_status(bl);
- return ret; + return 0; }
static int adp5520_bl_remove(struct platform_device *pdev)