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authorZheyu Ma <zheyuma97@gmail.com>2022-04-09 06:48:49 +0300
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2022-04-10 18:59:29 +0300
commit3a26787dacf04257a68b16315c984eb2c340bc5e (patch)
treec6ad52c71a88be6d6a6e650ed76c3e92ef3df98f /drivers/iio/magnetometer
parent108e4d4de2b58011eafd14581b6ea7469f1fc467 (diff)
downloadlinux-3a26787dacf04257a68b16315c984eb2c340bc5e.tar.xz
iio: magnetometer: ak8975: Fix the error handling in ak8975_power_on()
When the driver fails to enable the regulator 'vid', we will get the following splat: [ 79.955610] WARNING: CPU: 5 PID: 441 at drivers/regulator/core.c:2257 _regulator_put+0x3ec/0x4e0 [ 79.959641] RIP: 0010:_regulator_put+0x3ec/0x4e0 [ 79.967570] Call Trace: [ 79.967773] <TASK> [ 79.967951] regulator_put+0x1f/0x30 [ 79.968254] devres_release_group+0x319/0x3d0 [ 79.968608] i2c_device_probe+0x766/0x940 Fix this by disabling the 'vdd' regulator when failing to enable 'vid' regulator. Signed-off-by: Zheyu Ma <zheyuma97@gmail.com> Link: https://lore.kernel.org/r/20220409034849.3717231-2-zheyuma97@gmail.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/magnetometer')
-rw-r--r--drivers/iio/magnetometer/ak8975.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
index 088f748b683e..2432e697150c 100644
--- a/drivers/iio/magnetometer/ak8975.c
+++ b/drivers/iio/magnetometer/ak8975.c
@@ -416,6 +416,7 @@ static int ak8975_power_on(const struct ak8975_data *data)
if (ret) {
dev_warn(&data->client->dev,
"Failed to enable specified Vid supply\n");
+ regulator_disable(data->vdd);
return ret;
}