diff options
| author |   Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> | 2018-05-22 16:18:21 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-06-10 11:52:30 +0100 |
| commit | f5057e7b2dba4c33ed293196d75cb139d5014715 (patch) | |
| tree | a5cda44fee4653684c36cec3851ede0839a98291 /drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | |
| parent | iio: imu: inv_mpu6050: fix fifo count reading (diff) | |
| download | linux-dev-f5057e7b2dba4c33ed293196d75cb139d5014715.tar.xz linux-dev-f5057e7b2dba4c33ed293196d75cb139d5014715.zip | |
iio: imu: inv_mpu6050: better fifo overflow handling
Use fifo overflow bit from int status rather than using an
arbitrary threshold.
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c')
| -rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c index 7724888a4696..7a4aaed83044 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c @@ -110,6 +110,9 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p) "failed to ack interrupt\n"); goto flush_fifo; } + /* handle fifo overflow by reseting fifo */ + if (int_status & INV_MPU6050_BIT_FIFO_OVERFLOW_INT) + goto flush_fifo; if (!(int_status & INV_MPU6050_BIT_RAW_DATA_RDY_INT)) { dev_warn(regmap_get_device(st->map), "spurious interrupt with status 0x%x\n", int_status); @@ -135,8 +138,6 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p) if (result) goto end_session; fifo_count = get_unaligned_be16(&data[0]); - if (fifo_count > INV_MPU6050_FIFO_THRESHOLD) - goto flush_fifo; /* compute and process all complete datum */ nb = fifo_count / bytes_per_datum; for (i = 0; i < nb; ++i) { |