On 4/5/22 17:19, Robin Murphy wrote: > Remove the pointless check. host1x_drm_wants_iommu() cannot return true > unless an IOMMU exists for the host1x platform device, which at the moment > means the iommu_present() test could never fail. > > Signed-off-by: Robin Murphy <[email protected]> > --- > drivers/gpu/drm/tegra/drm.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c > index 9464f522e257..bc4321561400 100644 > --- a/drivers/gpu/drm/tegra/drm.c > +++ b/drivers/gpu/drm/tegra/drm.c > @@ -1149,7 +1149,7 @@ static int host1x_drm_probe(struct host1x_device *dev) > goto put; > } > > - if (host1x_drm_wants_iommu(dev) && iommu_present(&platform_bus_type)) { > + if (host1x_drm_wants_iommu(dev)) { > tegra->domain = iommu_domain_alloc(&platform_bus_type); > if (!tegra->domain) { > err = -ENOMEM;
host1x_drm_wants_iommu() returns true if there is no IOMMU for the host1x platform device of Tegra20/30 SoCs.
