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drm/msm: Stop using iommu_present()

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Even if some IOMMU has registered itself on the platform "bus", that
doesn't necessarily mean it provides translation for the device we
care about. Replace iommu_present() with a more appropriate check.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/480707/
Link: https://lore.kernel.org/r/5ab4f4574d7f3e042261da702d493ee40d003356.1649168268.git.robin.murphy@arm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Robin Murphy 2022-04-05 15:17:48 +01:00 committed by Rob Clark
parent 047ae66557
commit e2a88eabb0
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/msm/msm_drv.c
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@ -274,7 +274,7 @@ bool msm_use_mmu(struct drm_device *dev)
struct msm_drm_private *priv = dev->dev_private; struct msm_drm_private *priv = dev->dev_private;
/* a2xx comes with its own MMU */ /* a2xx comes with its own MMU */
return priv->is_a2xx || iommu_present(&platform_bus_type); return priv->is_a2xx || device_iommu_mapped(dev->dev);
} }
static int msm_init_vram(struct drm_device *dev) static int msm_init_vram(struct drm_device *dev)