diff options
| author |   Haibo Chen <haibo.chen@nxp.com> | 2022-06-15 19:31:58 +0800 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-19 17:22:49 +0100 |
| commit | bf745142cc0a3e1723f9207fb0c073c88464b7b4 (patch) | |
| tree | 4a3181ef11034fa2d3d9ada1a7a115e557abefd0 /drivers/iio | |
| parent | iio: adc: stm32: fix maximum clock rate for stm32mp15x (diff) | |
| download | linux-dev-bf745142cc0a3e1723f9207fb0c073c88464b7b4.tar.xz linux-dev-bf745142cc0a3e1723f9207fb0c073c88464b7b4.zip | |
iio: accel: mma8452: ignore the return value of reset operation
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@nxp.com>
Fixes: ecabae713196 ("iio: mma8452: Initialise before activating")
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/1655292718-14287-1-git-send-email-haibo.chen@nxp.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/mma8452.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c index 4156d216c640..f4f835274d75 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -1510,10 +1510,14 @@ 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); |