iio: buffer-dma: Use ARRAY_SIZE in for loop range

Use the ARRAY_SIZE macro in the for loops that access queue->fileio.blocks.
Macro is already used in a couple of places where this access occurs,
but range was hardcoded in these locations.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/buffer/industrialio-buffer-dma.c b/drivers/iio/buffer/industrialio-buffer-dma.c
index 212cbed..dd99d27 100644 (file)
--- a/drivers/iio/buffer/industrialio-buffer-dma.c
+++ b/drivers/iio/buffer/industrialio-buffer-dma.c
@@ -305,7 +305,7 @@ int iio_dma_buffer_request_update(struct iio_buffer *buffer)
        queue->fileio.active_block = NULL;
 
        spin_lock_irq(&queue->list_lock);
-       for (i = 0; i < 2; i++) {
+       for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
                block = queue->fileio.blocks[i];
 
                /* If we can't re-use it free it */
@@ -323,7 +323,7 @@ int iio_dma_buffer_request_update(struct iio_buffer *buffer)
 
        INIT_LIST_HEAD(&queue->incoming);
 
-       for (i = 0; i < 2; i++) {
+       for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
                if (queue->fileio.blocks[i]) {
                        block = queue->fileio.blocks[i];
                        if (block->state == IIO_BLOCK_STATE_DEAD) {