diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2025-09-03 13:51:49 +0300 |
|---|---|---|
| committer | Rob Clark <robin.clark@oss.qualcomm.com> | 2025-09-08 07:24:58 -0700 |
| commit | cc64568b522b64fb8f8c607da9eb4e2d9f72d0cf (patch) | |
| tree | cce53532be17481ecdbec15d4b9bb0ebe23057be | |
| parent | 0584da4515dbb4fec69107ce837eef36a7be5d7d (diff) | |
drm/msm/mdp4: 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 for an MDP4 device.
Fixes: 111fdd2198e6 ("drm/msm: drm_gpuvm conversion")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/672557/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
| -rw-r--r-- | drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c index 0952c7f18abd..4d1ea9b26191 100644 --- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c @@ -463,9 +463,9 @@ static int mdp4_kms_init(struct drm_device *dev) ret = PTR_ERR(mmu); goto fail; } else if (!mmu) { - DRM_DEV_INFO(dev->dev, "no iommu, fallback to phys " - "contig buffers for scanout\n"); - vm = NULL; + DRM_DEV_INFO(dev->dev, "no IOMMU, bailing out\n"); + ret = -ENODEV; + goto fail; } else { vm = msm_gem_vm_create(dev, mmu, "mdp4", 0x1000, 0x100000000 - 0x1000, |