From: Jonathan Marek jonathan@marek.ca
[ 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 --- drivers/gpu/drm/msm/msm_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c index bcaddbba564d..a54ed354578b 100644 --- a/drivers/gpu/drm/msm/msm_iommu.c +++ b/drivers/gpu/drm/msm/msm_iommu.c @@ -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);