staging:iio: add caching of the number of bytes in a scan.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c
index 8daa038..d964004 100644
--- a/drivers/staging/iio/imu/adis16400_ring.c
+++ b/drivers/staging/iio/imu/adis16400_ring.c
@@ -119,12 +119,12 @@
struct iio_buffer *ring = indio_dev->buffer;
int i = 0, j, ret = 0;
s16 *data;
- size_t datasize = ring->access->get_bytes_per_datum(ring);
+
/* Asumption that long is enough for maximum channels */
unsigned long mask = *indio_dev->active_scan_mask;
int scan_count = bitmap_weight(indio_dev->active_scan_mask,
indio_dev->masklength);
- data = kmalloc(datasize , GFP_KERNEL);
+ data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
if (data == NULL) {
dev_err(&st->us->dev, "memory alloc failed in ring bh");
return -ENOMEM;