Commit 62b5e322 authored by Jonathan Marek's avatar Jonathan Marek Committed by Rob Clark
Browse files

drm/msm: use for_each_sgtable_sg to iterate over scatterlist 



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: b145c6e6 ("drm/msm: Add support to create a local pagetable")
Signed-off-by: default avatarJonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20220613221019.11399-1-jonathan@marek.ca


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 49e47761

drivers/gpu/drm/msm/msm_iommu.c

+1 −1
Original line number Diff line number Diff line
@@ -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);