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    Subject[ 043/100] hwmon: (sht15) Check return value of regulator_enable()
    Date
    3.8-stable review patch.  If anyone has any objections, please let me know.

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

    From: Mark Brown <broonie@opensource.wolfsonmicro.com>

    commit 3e78080f81481aa8340374d5a37ae033c1cf4272 upstream.

    Not having power is a pretty serious error so check that we are able to
    enable the supply and error out if we can't.

    Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
    Signed-off-by: Guenter Roeck <linux@roeck-us.net>

    ---
    drivers/hwmon/sht15.c | 8 +++++++-
    1 file changed, 7 insertions(+), 1 deletion(-)

    --- a/drivers/hwmon/sht15.c
    +++ b/drivers/hwmon/sht15.c
    @@ -926,7 +926,13 @@ static int sht15_probe(struct platform_d
    if (voltage)
    data->supply_uV = voltage;

    - regulator_enable(data->reg);
    + ret = regulator_enable(data->reg);
    + if (ret != 0) {
    + dev_err(&pdev->dev,
    + "failed to enable regulator: %d\n", ret);
    + return ret;
    + }
    +
    /*
    * Setup a notifier block to update this if another device
    * causes the voltage to change



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