[PATCH 5.14 551/849] iio: st_sensors: disable regulators after device unregistration

Greg Kroah-Hartman
2021-11-15T23:08:40Z

From: Alexandru Ardelean <aardelean@deviqon.com>

[ Upstream commit 9f0b3e0cc0c88618aa9e5cecef747b1337ae0a5d ]

Up until commit ea7e586bdd331 ("iio: st_sensors: move regulator retrieveal
to core") only the ST pressure driver seems to have had any regulator
disable. After that commit, the regulator handling was moved into the
common st_sensors logic.

In all instances of this regulator handling, the regulators were disabled
before unregistering the IIO device.
This can cause issues where the device would be powered down and still be
available to userspace, allowing it to send invalid/garbage data.

This change moves the st_sensors_power_disable() after the common probe
functions. These common probe functions also handle unregistering the IIO
device.

Fixes: 774487611c949 ("iio: pressure-core: st: Provide support for the Vdd power supply")
Fixes: ea7e586bdd331 ("iio: st_sensors: move regulator retrieveal to core")
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Denis CIOCCA <denis.ciocca@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210823112204.243255-2-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iio/accel/st_accel_i2c.c | 4 ++--
drivers/iio/accel/st_accel_spi.c | 4 ++--
drivers/iio/gyro/st_gyro_i2c.c | 4 ++--
drivers/iio/gyro/st_gyro_spi.c | 4 ++--
drivers/iio/magnetometer/st_magn_i2c.c | 4 ++--
drivers/iio/magnetometer/st_magn_spi.c | 4 ++--
drivers/iio/pressure/st_pressure_i2c.c | 4 ++--
drivers/iio/pressure/st_pressure_spi.c | 4 ++--
8 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index 95e305b88d5ed..02c823b93ecd4 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -194,10 +194,10 @@ static int st_accel_i2c_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);

- st_sensors_power_disable(indio_dev);
-
st_accel_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c
index 83d3308ce5ccc..386ae18d5f269 100644
--- a/drivers/iio/accel/st_accel_spi.c
+++ b/drivers/iio/accel/st_accel_spi.c
@@ -143,10 +143,10 @@ static int st_accel_spi_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);

- st_sensors_power_disable(indio_dev);
-
st_accel_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

diff --git a/drivers/iio/gyro/st_gyro_i2c.c b/drivers/iio/gyro/st_gyro_i2c.c
index a25cc0379e163..3ed5779779465 100644
--- a/drivers/iio/gyro/st_gyro_i2c.c
+++ b/drivers/iio/gyro/st_gyro_i2c.c
@@ -106,10 +106,10 @@ static int st_gyro_i2c_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);

- st_sensors_power_disable(indio_dev);
-
st_gyro_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

diff --git a/drivers/iio/gyro/st_gyro_spi.c b/drivers/iio/gyro/st_gyro_spi.c
index 18d6a2aeda45a..c04bcf2518c11 100644
--- a/drivers/iio/gyro/st_gyro_spi.c
+++ b/drivers/iio/gyro/st_gyro_spi.c
@@ -110,10 +110,10 @@ static int st_gyro_spi_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);

- st_sensors_power_disable(indio_dev);
-
st_gyro_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

diff --git a/drivers/iio/magnetometer/st_magn_i2c.c b/drivers/iio/magnetometer/st_magn_i2c.c
index 3e23c117de8e1..6c93df6926a30 100644
--- a/drivers/iio/magnetometer/st_magn_i2c.c
+++ b/drivers/iio/magnetometer/st_magn_i2c.c
@@ -102,10 +102,10 @@ static int st_magn_i2c_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);

- st_sensors_power_disable(indio_dev);
-
st_magn_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c
index 03c0a737aba6e..4f52c3a21e3c2 100644
--- a/drivers/iio/magnetometer/st_magn_spi.c
+++ b/drivers/iio/magnetometer/st_magn_spi.c
@@ -96,10 +96,10 @@ static int st_magn_spi_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);

- st_sensors_power_disable(indio_dev);
-
st_magn_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index f0a5af314ceb8..8c26ff61e56ad 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -118,10 +118,10 @@ static int st_press_i2c_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);

- st_sensors_power_disable(indio_dev);
-
st_press_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
index b48cf7d01cd74..8cf8cd3b4554a 100644
--- a/drivers/iio/pressure/st_pressure_spi.c
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -102,10 +102,10 @@ static int st_press_spi_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);

- st_sensors_power_disable(indio_dev);
-
st_press_common_remove(indio_dev);

+ st_sensors_power_disable(indio_dev);
+
return 0;
}

--
2.33.0