iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

swiotlb: use map_single instead of swiotlb_map_single in swiotlb_alloc_coherent

Browse Source 
We always need swiotlb memory here so address_needs_mapping and
swiotlb_force testings are irrelevant. map_single should be used here
instead of swiotlb_map_single.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori 2008-09-08 18:53:48 +09:00 committed by Ingo Molnar
parent 68e91d6134
commit 9dfda12b8b
1 changed files with 2 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/swiotlb.c
View File

@ -483,12 +483,9 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
* swiotlb_map_single(), which will grab memory from
* the lowest available address range.
*/
dma_addr_t handle;
handle = swiotlb_map_single(NULL, NULL, size, DMA_FROM_DEVICE);
if (swiotlb_dma_mapping_error(hwdev, handle))
ret = map_single(hwdev, NULL, size, DMA_FROM_DEVICE);
if (!ret)
return NULL;
ret = bus_to_virt(handle);
}
memset(ret, 0, size);