Commit d0c8ba40 authored by Yisheng Xie's avatar Yisheng Xie Committed by Christoph Hellwig

swiotlb: update comments to refer to physical instead of virtual addresses

swiotlb use physical address of bounce buffer when do map and unmap,
therefore, related comment should be updated.
Signed-off-by: default avatarYisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 30fd6427
......@@ -593,9 +593,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev,
}
/*
* Allocates bounce buffer and returns its kernel virtual address.
* Allocates bounce buffer and returns its physical address.
*/
static phys_addr_t
map_single(struct device *hwdev, phys_addr_t phys, size_t size,
enum dma_data_direction dir, unsigned long attrs)
......@@ -614,7 +613,7 @@ map_single(struct device *hwdev, phys_addr_t phys, size_t size,
}
/*
* dma_addr is the kernel virtual address of the bounce buffer to unmap.
* tlb_addr is the physical address of the bounce buffer to unmap.
*/
void swiotlb_tbl_unmap_single(struct device *hwdev, phys_addr_t tlb_addr,
size_t size, enum dma_data_direction dir,
......
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