[PATCH 4.9 37/72] backlight: adp5520: Fix error handling in adp5520_bl_probe()
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2017-11-19 14:42:15
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4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexey Khoroshilov <redacted> [ 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 <redacted> Acked-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Lee Jones <redacted> Signed-off-by: Sasha Levin <redacted> 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)