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Commit cbf73ae5 authored by Martin Kelly's avatar Martin Kelly Committed by Jonathan Cameron
Browse files

iio: imu: inv_mpu6050: make loop a do-while 



Prior to this loop, we check if fifo_count < bytes_per_datum and bail if
so. This means that when we hit the loop, we know that fifo_count >=
bytes_per_datum, so the check is unneeded and we can turn the loop into
a do-while for a slight performance improvement.

Signed-off-by: default avatarMartin Kelly <mkelly@xevo.com>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 21f4bb87

drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c

+2 −2
Original line number Diff line number Diff line
@@ -175,7 +175,7 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p) 
	if (kfifo_len(&st->timestamps) >

	    fifo_count / bytes_per_datum + INV_MPU6050_TIME_STAMP_TOR)

		goto flush_fifo;

	while (fifo_count >= bytes_per_datum) {

	do {

		result = regmap_bulk_read(st->map, st->reg->fifo_r_w,

					  data, bytes_per_datum);

		if (result)
@@ -194,7 +194,7 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p) 
							   timestamp);



		fifo_count -= bytes_per_datum;

	}

	} while (fifo_count >= bytes_per_datum);



end_session:

	mutex_unlock(&st->lock);