openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

sparc64: zero out dma_length 

zero out dma_length in the entry immediately following the last mapped
entry for unmap_sg.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
FUJITA Tomonori 2007-10-23 12:58:39 +02:00 committed by Jens Axboe
parent 83fcaf7040
commit cb92ae8150
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/sparc64/kernel/iommu_common.c
View File

@ -233,6 +233,11 @@ unsigned long prepare_sg(struct scatterlist *sg, int nents)
dma_sg->dma_address = dent_addr;
dma_sg->dma_length = dent_len;
if (dma_sg != sg) {
dma_sg = next_sg(dma_sg);
dma_sg->dma_length = 0;
}
return ((unsigned long) dent_addr +
(unsigned long) dent_len +
(IO_PAGE_SIZE - 1UL)) >> IO_PAGE_SHIFT;