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| author | Surendra Singh Chouhan <kr494167@gmail.com> | 2026-07-24 08:28:02 +0530 |
|---|---|---|
| committer | Jonathan Cameron <jonathan.cameron@oss.qualcomm.com> | 2026-08-31 02:58:30 +0100 |
| commit | c23bfe6e22104c463f37da3770e17ec72fc73f86 (patch) | |
| tree | ab88cf4f0f70f246ccdc0b2d86e183e1160cbc1f /drivers/iio | |
| parent | 575acf622d30edfc9a0c63041991698ec907c869 (diff) | |
| download | linux-next-c23bfe6e22104c463f37da3770e17ec72fc73f86.tar.gz linux-next-c23bfe6e22104c463f37da3770e17ec72fc73f86.zip | |
iio: light: apds9999: register standby action after enabling device
apds9999_init() called devm_add_action_or_reset() at the start
of the function, before register configuration and before enabling the
device via APDS9999_MAIN_CTRL_LS_EN.
If register initialization failed during apds9999_init() (e.g. SMBus
write failures on LS_MEAS_RATE or LS_GAIN), devm_add_action_or_reset()
immediately triggered apds9999_standby(), writing to the control
register on a device that failed initialization and was never enabled.
Fix this by registering devm_add_action_or_reset() only after
APDS9999_MAIN_CTRL_LS_EN is successfully written to the control
register.
Signed-off-by: Surendra Singh Chouhan <kr494167@gmail.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/light/apds9999.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/iio/light/apds9999.c b/drivers/iio/light/apds9999.c index 43fa9992c9c2..62620c4a2fbc 100644 --- a/drivers/iio/light/apds9999.c +++ b/drivers/iio/light/apds9999.c @@ -100,10 +100,6 @@ static int apds9999_init(struct apds9999_data *data) u8 regval; int ret; - ret = devm_add_action_or_reset(dev, apds9999_standby, client); - if (ret) - return ret; - guard(mutex)(&data->lock); regval = FIELD_PREP(APDS9999_LS_RES_MASK, APDS9999_RES_18BIT) | @@ -121,8 +117,12 @@ static int apds9999_init(struct apds9999_data *data) return ret; data->als_gain_idx = APDS9999_GAIN_3X; - return i2c_smbus_write_byte_data(client, APDS9999_REG_MAIN_CTRL, - APDS9999_MAIN_CTRL_LS_EN); + ret = i2c_smbus_write_byte_data(client, APDS9999_REG_MAIN_CTRL, + APDS9999_MAIN_CTRL_LS_EN); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, apds9999_standby, client); } static int apds9999_read_channel(struct apds9999_data *data, u8 reg, |