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| author | Jason Wang <jasowang@redhat.com> | 2025-08-21 14:46:33 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-10-01 07:24:43 -0400 |
| commit | 7d096cb3e16f09d9762ae8cef897cdbc13a40029 (patch) | |
| tree | 794a023f2e09f7cd3de6d0198663519157cb8b15 /drivers/virtio | |
| parent | 642d82e3c3f0166a0742f65356c4358c4936a1ca (diff) | |
virtio_ring: constify virtqueue pointer for DMA helpers
This patch constifies the virtqueue pointer for DMA helpers.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20250821064641.5025-2-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index f5062061c408..103bad8cffff 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -3149,12 +3149,12 @@ EXPORT_SYMBOL_GPL(virtqueue_get_vring); * * return DMA address. Caller should check that by virtqueue_dma_mapping_error(). */ -dma_addr_t virtqueue_dma_map_single_attrs(struct virtqueue *_vq, void *ptr, +dma_addr_t virtqueue_dma_map_single_attrs(const struct virtqueue *_vq, void *ptr, size_t size, enum dma_data_direction dir, unsigned long attrs) { - struct vring_virtqueue *vq = to_vvq(_vq); + const struct vring_virtqueue *vq = to_vvq(_vq); if (!vq->use_dma_api) { kmsan_handle_dma(virt_to_page(ptr), offset_in_page(ptr), size, dir); @@ -3176,11 +3176,12 @@ EXPORT_SYMBOL_GPL(virtqueue_dma_map_single_attrs); * Unmap the address that is mapped by the virtqueue_dma_map_* APIs. * */ -void virtqueue_dma_unmap_single_attrs(struct virtqueue *_vq, dma_addr_t addr, +void virtqueue_dma_unmap_single_attrs(const struct virtqueue *_vq, + dma_addr_t addr, size_t size, enum dma_data_direction dir, unsigned long attrs) { - struct vring_virtqueue *vq = to_vvq(_vq); + const struct vring_virtqueue *vq = to_vvq(_vq); if (!vq->use_dma_api) return; @@ -3196,9 +3197,9 @@ EXPORT_SYMBOL_GPL(virtqueue_dma_unmap_single_attrs); * * Returns 0 means dma valid. Other means invalid dma address. */ -int virtqueue_dma_mapping_error(struct virtqueue *_vq, dma_addr_t addr) +int virtqueue_dma_mapping_error(const struct virtqueue *_vq, dma_addr_t addr) { - struct vring_virtqueue *vq = to_vvq(_vq); + const struct vring_virtqueue *vq = to_vvq(_vq); if (!vq->use_dma_api) return 0; @@ -3217,9 +3218,9 @@ EXPORT_SYMBOL_GPL(virtqueue_dma_mapping_error); * * return bool */ -bool virtqueue_dma_need_sync(struct virtqueue *_vq, dma_addr_t addr) +bool virtqueue_dma_need_sync(const struct virtqueue *_vq, dma_addr_t addr) { - struct vring_virtqueue *vq = to_vvq(_vq); + const struct vring_virtqueue *vq = to_vvq(_vq); if (!vq->use_dma_api) return false; @@ -3240,12 +3241,12 @@ EXPORT_SYMBOL_GPL(virtqueue_dma_need_sync); * the DMA address really needs to be synchronized * */ -void virtqueue_dma_sync_single_range_for_cpu(struct virtqueue *_vq, +void virtqueue_dma_sync_single_range_for_cpu(const struct virtqueue *_vq, dma_addr_t addr, unsigned long offset, size_t size, enum dma_data_direction dir) { - struct vring_virtqueue *vq = to_vvq(_vq); + const struct vring_virtqueue *vq = to_vvq(_vq); struct device *dev = vring_dma_dev(vq); if (!vq->use_dma_api) @@ -3266,12 +3267,12 @@ EXPORT_SYMBOL_GPL(virtqueue_dma_sync_single_range_for_cpu); * Before calling this function, use virtqueue_dma_need_sync() to confirm that * the DMA address really needs to be synchronized */ -void virtqueue_dma_sync_single_range_for_device(struct virtqueue *_vq, +void virtqueue_dma_sync_single_range_for_device(const struct virtqueue *_vq, dma_addr_t addr, unsigned long offset, size_t size, enum dma_data_direction dir) { - struct vring_virtqueue *vq = to_vvq(_vq); + const struct vring_virtqueue *vq = to_vvq(_vq); struct device *dev = vring_dma_dev(vq); if (!vq->use_dma_api) |