Hi!
From: Dinghao Liu dinghao.liu@zju.edu.cn
commit 0187294d227dfc42889e1da8f8ce1e44fc25f147 upstream.
When devm_regmap_init_i2c() returns an error code, a pairing runtime PM usage counter decrement is needed to keep the counter balanced. For error paths after ak8974_set_power(), ak8974_detect() and ak8974_reset(), things are the same.
However, When iio_triggered_buffer_setup() returns an error code, there will be two PM usgae counter decrements.
Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Fixes: 7c94a8b2ee8c ("iio: magn: add a driver for AK8974") Reviewed-by: Linus Walleij linus.walleij@linaro.org Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
drivers/iio/magnetometer/ak8974.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-)
--- a/drivers/iio/magnetometer/ak8974.c +++ b/drivers/iio/magnetometer/ak8974.c @@ -768,19 +768,21 @@ static int ak8974_probe(struct i2c_clien ak8974->map = devm_regmap_init_i2c(i2c, &ak8974_regmap_config); if (IS_ERR(ak8974->map)) { dev_err(&i2c->dev, "failed to allocate register map\n");
pm_runtime_put_noidle(&i2c->dev);pm_runtime_disable(&i2c->dev);
This misses regulator_bulk_disable(), afaict. I believe it can be refactored to use common exit...?
Best regards, Pavel