From: Chuhong Yuan hslester96@gmail.com
[ Upstream commit 338084135aeddb103624a6841972fb8588295cc6 ]
Use devm_add_action_or_reset to call tsl2772_chip_off when the device is removed. This also fixes the issue that the chip is turned off before the device is unregistered.
Not marked for stable as fairly hard to hit the bug and this is in the middle of a set making other cleanups to the driver. Hence will probably need explicit backporting.
Signed-off-by: Chuhong Yuan hslester96@gmail.com Fixes: c06c4d793584 ("staging: iio: tsl2x7x/tsl2772: move out of staging") Reviewed-by: Brian Masney masneyb@onstation.org Tested-by: Brian Masney masneyb@onstation.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/iio/light/tsl2772.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c index df5b2a0..f2e308c 100644 --- a/drivers/iio/light/tsl2772.c +++ b/drivers/iio/light/tsl2772.c @@ -716,6 +716,13 @@ static int tsl2772_chip_off(struct iio_dev *indio_dev) return tsl2772_write_control_reg(chip, 0x00); }
+static void tsl2772_chip_off_action(void *data) +{ + struct iio_dev *indio_dev = data; + + tsl2772_chip_off(indio_dev); +} + /** * tsl2772_invoke_change - power cycle the device to implement the user * parameters @@ -1711,9 +1718,14 @@ static int tsl2772_probe(struct i2c_client *clientp, if (ret < 0) return ret;
+ ret = devm_add_action_or_reset(&clientp->dev, + tsl2772_chip_off_action, + indio_dev); + if (ret < 0) + return ret; + ret = iio_device_register(indio_dev); if (ret) { - tsl2772_chip_off(indio_dev); dev_err(&clientp->dev, "%s: iio registration failed\n", __func__); return ret; @@ -1740,8 +1752,6 @@ static int tsl2772_remove(struct i2c_client *client) { struct iio_dev *indio_dev = i2c_get_clientdata(client);
- tsl2772_chip_off(indio_dev); - iio_device_unregister(indio_dev);
return 0;