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drm/msm: use for_each_sgtable_sg to iterate over scatterlist

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[ Upstream commit 62b5e322fb6cc5a5a91fdeba0e4e57e75d9f4387 ]

The dma_map_sgtable() call (used to invalidate cache) overwrites sgt->nents
with 1, so msm_iommu_pagetable_map maps only the first physical segment.

To fix this problem use for_each_sgtable_sg(), which uses orig_nents.

Fixes: b145c6e65eb0 ("drm/msm: Add support to create a local pagetable")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20220613221019.11399-1-jonathan@marek.ca
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonathan Marek 2022-06-13 18:10:19 -04:00 committed by Greg Kroah-Hartman
parent 64e6ba7f2d
commit 7154e4df56
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/msm/msm_iommu.c
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@ -58,7 +58,7 @@ static int msm_iommu_pagetable_map(struct msm_mmu *mmu, u64 iova,
u64 addr = iova;
unsigned int i;
for_each_sg(sgt->sgl, sg, sgt->nents, i) {
for_each_sgtable_sg(sgt, sg, i) {
size_t size = sg->length;
phys_addr_t phys = sg_phys(sg);