github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-23 22:52:19 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/msm: stop supporting no-IOMMU configuration

Browse Source 
With the switch to GPUVM the msm driver no longer supports the no-IOMMU
configurations (even without the actual GPU). Return an error in case we
face the lack of the IOMMU.

Fixes: 111fdd2198 ("drm/msm: drm_gpuvm conversion")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/672559/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
This commit is contained in:
Dmitry Baryshkov 2025-09-03 13:51:50 +03:00 committed by Rob Clark
parent cc64568b52
commit c94fc6d356
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/msm/msm_kms.c
View File

@ -195,14 +195,13 @@ struct drm_gpuvm *msm_kms_init_vm(struct drm_device *dev)
iommu_dev = mdp_dev;
else
iommu_dev = mdss_dev;
mmu = msm_iommu_disp_new(iommu_dev, 0);
if (IS_ERR(mmu))
return ERR_CAST(mmu);
if (!mmu) {
drm_info(dev, "no IOMMU, fallback to phys contig buffers for scanout\n");
return NULL;
drm_info(dev, "no IOMMU, bailing out\n");
return ERR_PTR(-ENODEV);
}
vm = msm_gem_vm_create(dev, mmu, "mdp_kms",