diff options
Diffstat (limited to 'queue-6.7/iio-imu-inv_mpu6050-fix-fifo-parsing-when-empty.patch')
| -rw-r--r-- | queue-6.7/iio-imu-inv_mpu6050-fix-fifo-parsing-when-empty.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/queue-6.7/iio-imu-inv_mpu6050-fix-fifo-parsing-when-empty.patch b/queue-6.7/iio-imu-inv_mpu6050-fix-fifo-parsing-when-empty.patch new file mode 100644 index 0000000000..2947bfd864 --- /dev/null +++ b/queue-6.7/iio-imu-inv_mpu6050-fix-fifo-parsing-when-empty.patch @@ -0,0 +1,35 @@ +From 60caa8b33bd682a9ed99d1fc3f91d74e1acc9922 Mon Sep 17 00:00:00 2001 +From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> +Date: Mon, 19 Feb 2024 15:48:25 +0000 +Subject: iio: imu: inv_mpu6050: fix FIFO parsing when empty + +From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> + +commit 60caa8b33bd682a9ed99d1fc3f91d74e1acc9922 upstream. + +Now that we are reading the full FIFO in the interrupt handler, +it is possible to have an emply FIFO since we are still receiving +1 interrupt per data. Handle correctly this case instead of having +an error causing a reset of the FIFO. + +Fixes: 0829edc43e0a ("iio: imu: inv_mpu6050: read the full fifo when processing data") +Cc: stable@vger.kernel.org +Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> +Link: https://lore.kernel.org/r/20240219154825.90656-1-inv.git-commit@tdk.com +Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 2 ++ + 1 file changed, 2 insertions(+) + +--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c ++++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c +@@ -109,6 +109,8 @@ irqreturn_t inv_mpu6050_read_fifo(int ir + /* compute and process only all complete datum */ + nb = fifo_count / bytes_per_datum; + fifo_count = nb * bytes_per_datum; ++ if (nb == 0) ++ goto end_session; + /* Each FIFO data contains all sensors, so same number for FIFO and sensor data */ + fifo_period = NSEC_PER_SEC / INV_MPU6050_DIVIDER_TO_FIFO_RATE(st->chip_config.divider); + inv_sensors_timestamp_interrupt(&st->timestamp, fifo_period, nb, nb, pf->timestamp); |