mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-12 21:57:43 +00:00
Code Issues Releases Wiki Activity

iio: accel: mma8452: ignore the return value of reset operation

Browse source 
commit bf745142cc upstream.

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: ecabae7131 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Haibo Chen 2022-06-15 19:31:58 +08:00 committed by Greg Kroah-Hartman
parent 0ab58f6a2e
commit 504152ac09
1 changed files with 7 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/iio/accel/mma8452.c
View file

@ -1412,10 +1412,14 @@ 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);