This is a note to let you know that I've just added the patch titled

backlight: adp5520: Fix error handling in adp5520_bl_probe()

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: backlight-adp5520-fix-error-handling-in-adp5520_bl_probe.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Sun Nov 19 11:32:28 CET 2017

From: Alexey Khoroshilov khoroshilov@ispras.ru Date: Sat, 9 Jul 2016 01:19:51 +0300 Subject: backlight: adp5520: Fix error handling in adp5520_bl_probe()

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)

Patches currently in stable-queue which might be from khoroshilov@ispras.ru are

queue-4.9/backlight-adp5520-fix-error-handling-in-adp5520_bl_probe.patch