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| author | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2025-09-03 13:51:50 +0300 |
|---|---|---|
| committer | Rob Clark <robin.clark@oss.qualcomm.com> | 2025-09-08 07:24:58 -0700 |
| commit | c94fc6d35685587aa0cb9a8d7d7062c73ab04d89 (patch) | |
| tree | ea314dd6f26091fc1eba3f845c7c62e5ac2919ba /drivers | |
| parent | drm/msm/mdp4: stop supporting no-IOMMU configuration (diff) | |
| download | linux-c94fc6d35685587aa0cb9a8d7d7062c73ab04d89.tar.gz linux-c94fc6d35685587aa0cb9a8d7d7062c73ab04d89.zip | |
drm/msm: stop supporting no-IOMMU configuration
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: 111fdd2198e6 ("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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_kms.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/msm_kms.c b/drivers/gpu/drm/msm/msm_kms.c index 56828d218e88..4c4dcb095c4d 100644 --- a/drivers/gpu/drm/msm/msm_kms.c +++ b/drivers/gpu/drm/msm/msm_kms.c @@ -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", |