diff options
| -rw-r--r-- | drivers/iio/accel/mma9553.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c index 08f28c3eb6cc..a605280637e9 100644 --- a/drivers/iio/accel/mma9553.c +++ b/drivers/iio/accel/mma9553.c @@ -182,6 +182,10 @@ struct mma9553_conf_regs { struct mma9553_data { struct i2c_client *client; + /* + * 1. Serialize access to HW (requested by mma9551_core API). + * 2. Serialize sequences that power on/off the device and access HW. + */ struct mutex mutex; struct mma9553_conf_regs conf; struct mma9553_event events[MMA9553_EVENTS_INFO_SIZE]; |