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

power: supply: ab8500_charger: Bail out in case of error in 'ab8500_charger_init_hw_registers()'

to the 4.15-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: power-supply-ab8500_charger-bail-out-in-case-of-error-in-ab8500_charger_init_hw_registers.patch and it can be found in the queue-4.15 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 Fri Mar 16 15:11:07 CET 2018

From: Christophe JAILLET christophe.jaillet@wanadoo.fr Date: Wed, 22 Nov 2017 21:31:20 +0100 Subject: power: supply: ab8500_charger: Bail out in case of error in 'ab8500_charger_init_hw_registers()'

From: Christophe JAILLET christophe.jaillet@wanadoo.fr

[ Upstream commit 09edcb647542487864e23aa8d2ef26be3e08978a ]

If an error occurs when we enable the backup battery charging, we should go through the error handling path directly.

Before commit db43e6c473b5 ("ab8500-bm: Add usb power path support") this was the case, but this commit has added some code between the last test and the 'out' label. So, in case of error, this added code is executed and the error may be silently ignored.

Fix it by adding the missing 'goto out', as done in all other error handling paths.

Fixes: db43e6c473b5 ("ab8500-bm: Add usb power path support") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.co.uk Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/power/supply/ab8500_charger.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/power/supply/ab8500_charger.c +++ b/drivers/power/supply/ab8500_charger.c @@ -3221,8 +3221,10 @@ static int ab8500_charger_init_hw_regist ret = abx500_mask_and_set_register_interruptible(di->dev, AB8500_RTC, AB8500_RTC_CTRL_REG, RTC_BUP_CH_ENA, RTC_BUP_CH_ENA); - if (ret < 0) + if (ret < 0) { dev_err(di->dev, "%s mask and set failed\n", __func__); + goto out; + }

if (is_ab8540(di->parent)) { ret = abx500_mask_and_set_register_interruptible(di->dev,

Patches currently in stable-queue which might be from christophe.jaillet@wanadoo.fr are

queue-4.15/power-supply-ab8500_charger-fix-an-error-handling-path.patch queue-4.15/power-supply-ab8500_charger-bail-out-in-case-of-error-in-ab8500_charger_init_hw_registers.patch