From: Haibo Chen <haibo.chen@xxxxxxx>
On fxls8471, after set the reset bit, the device will reset immediately,
will not give ACK. So ignore the return value of this reset operation,
let the following code logic to check whether the reset operation works.
Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
---
drivers/iio/accel/mma8452.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index e0f0c0abed28..c7d9ca96dbaa 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -1511,10 +1511,14 @@ static int mma8452_reset(struct i2c_client *client)
int i;
int ret;
- ret = i2c_smbus_write_byte_data(client, MMA8452_CTRL_REG2,
+ /*
+ * Find on fxls8471, after config reset bit, it reset immediately,
+ * and will not give ACK, so here do not check the return value.
+ * The following code will read the reset register, and check whether
+ * this reset works.
+ */
+ i2c_smbus_write_byte_data(client, MMA8452_CTRL_REG2,
MMA8452_CTRL_REG2_RST);
- if (ret < 0)
- return ret;
for (i = 0; i < 10; i++) {
usleep_range(100, 200);
--
2.25.1
