[PATCH V3 5/9] virtio_ring: rename dma_handle to map_handle

[Jason Wang]

Following patch will introduce virtio map opreations which means the
address is not necessarily used for DMA. Let's rename the dma_handle
to map_handle first.

Reviewed-by: Christoph Hellwig <h...@lst.de>
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
 drivers/virtio/virtio_ring.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 55dd68e71509..26ce8a3d6927 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -306,18 +306,18 @@ size_t virtio_max_dma_size(const struct virtio_device 
*vdev)
 EXPORT_SYMBOL_GPL(virtio_max_dma_size);
 
 static void *vring_alloc_queue(struct virtio_device *vdev, size_t size,
-                              dma_addr_t *dma_handle, gfp_t flag,
+                              dma_addr_t *map_handle, gfp_t flag,
                               void *map_token)
 {
        if (vring_use_map_api(vdev)) {
                return dma_alloc_coherent(map_token, size,
-                                         dma_handle, flag);
+                                         map_handle, flag);
        } else {
                void *queue = alloc_pages_exact(PAGE_ALIGN(size), flag);
 
                if (queue) {
                        phys_addr_t phys_addr = virt_to_phys(queue);
-                       *dma_handle = (dma_addr_t)phys_addr;
+                       *map_handle = (dma_addr_t)phys_addr;
 
                        /*
                         * Sanity check: make sure we dind't truncate
@@ -330,7 +330,7 @@ static void *vring_alloc_queue(struct virtio_device *vdev, 
size_t size,
                         * warning and abort if we end up with an
                         * unrepresentable address.
                         */
-                       if (WARN_ON_ONCE(*dma_handle != phys_addr)) {
+                       if (WARN_ON_ONCE(*map_handle != phys_addr)) {
                                free_pages_exact(queue, PAGE_ALIGN(size));
                                return NULL;
                        }
@@ -340,11 +340,11 @@ static void *vring_alloc_queue(struct virtio_device 
*vdev, size_t size,
 }
 
 static void vring_free_queue(struct virtio_device *vdev, size_t size,
-                            void *queue, dma_addr_t dma_handle,
+                            void *queue, dma_addr_t map_handle,
                             void *map_token)
 {
        if (vring_use_map_api(vdev))
-               dma_free_coherent(map_token, size, queue, dma_handle);
+               dma_free_coherent(map_token, size, queue, map_handle);
        else
                free_pages_exact(queue, PAGE_ALIGN(size));
 }
-- 
2.42.0