| Message ID | 20250311085030.3593-4-s.seva@4sigma.it (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v3,1/2] iio: imu: st_lsm6dsx: fix possible lockup in st_lsm6dsx_read_fifo | expand |
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c index 480a9b31065c..8a9d2593576a 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c @@ -626,6 +626,9 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw) if (!fifo_len) return 0; + if (!pattern_len) + pattern_len = ST_LSM6DSX_TAGGED_SAMPLE_SIZE; + for (read_len = 0; read_len < fifo_len; read_len += pattern_len) { err = st_lsm6dsx_read_block(hw, ST_LSM6DSX_REG_FIFO_OUT_TAG_ADDR,
Prevent st_lsm6dsx_read_tagged_fifo from falling in an infinite loop in case pattern_len is equal to zero and the device FIFO is not empty. Fixes: 801a6e0af0c6 ("iio: imu: st_lsm6dsx: add support to LSM6DSO") Signed-off-by: Silvano Seva <s.seva@4sigma.it> --- Changes since v1: * st_lsm6dsx_read_fifo: moved check for zero pattern_len before fifo_len assignment * st_lsm6dsx_read_fifo: dropped check for zero fifo_len * added Fixes tags in commit message Changes since v2: * split patch in two parts, one fixing st_lsm6dsx_read_fifo and one fixing st_lsm6dsx_read_tagged_fifo drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c | 3 +++ 1 file changed, 3 insertions(+)