5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
commit c7c44e57750c31de43906d97813273fdffcf7d02 upstream.
The dev pointer that is received as an argument in the
in_illuminance_period_available_show function references the device
embedded in the IIO device, not in the i2c client.
dev_to_iio_dev() must be used to accessthe right data. The current
implementation leads to a segmentation fault on every attempt to read
the attribute because indio_dev gets a NULL assignment.
This bug has been present since the first appearance of the driver,
apparently since the last version (V6) before getting applied. A
constant attribute was used until then, and the last modifications might
have not been tested again.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 7b779f573c48 ("iio: light: add driver for veml6030 ambient light sensor")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
Link: https://patch.msgid.link/20240913-veml6035-v1-3-0b09c0c90418@xxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/light/veml6030.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/iio/light/veml6030.c
+++ b/drivers/iio/light/veml6030.c
@@ -99,9 +99,8 @@ static const char * const period_values[
static ssize_t in_illuminance_period_available_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
+ struct veml6030_data *data = iio_priv(dev_to_iio_dev(dev));
int ret, reg, x;
- struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
- struct veml6030_data *data = iio_priv(indio_dev);
ret = regmap_read(data->regmap, VEML6030_REG_ALS_CONF, ®);
if (ret) {
