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staging: android: ion: fix partial sync for iommu

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Fixes: 975372e2cb ("staging: android: ion: support partial cpu access")
Change-Id: Iabf3b04dbc838ca5c60fa1a0592bbb5aac496090
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This commit is contained in:
Jianqun Xu
2021-07-30 16:50:39 +08:00
committed by Tao Huang
parent d206db3376
commit 6863a5d24a
1 changed files with 2 additions and 6 deletions
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8
drivers/staging/android/ion/ion.c
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@@ -437,14 +437,11 @@ static int ion_sgl_sync_range(struct device *dev, struct scatterlist *sgl,
for_each_sg(sgl, sg, nents, i) {
unsigned int sg_offset, sg_left, size = 0;
if (i == 0)
sg_dma_addr = sg_dma_address(sg);
sg_dma_addr = sg_dma_address(sg);
len += sg->length;
if (len <= offset) {
sg_dma_addr += sg->length;
if (len <= offset)
continue;
}
sg_left = len - offset;
sg_offset = sg->length - sg_left;
@@ -459,7 +456,6 @@ static int ion_sgl_sync_range(struct device *dev, struct scatterlist *sgl,
offset += size;
length -= size;
sg_dma_addr += sg->length;
if (length == 0)
break;