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    Subject[PATCH 4.9 183/241] power: supply: ab8500_charger: Bail out in case of error in ab8500_charger_init_hw_registers()
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    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,

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