iommu_get_domain_for_dev() is already perfectly happy to return NULL if the given device has no IOMMU. Drop the unnecessary check.
Signed-off-by: Robin Murphy <[email protected]> --- drivers/gpu/drm/arm/malidp_planes.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c index 0562bdaac00c..81d9f5004025 100644 --- a/drivers/gpu/drm/arm/malidp_planes.c +++ b/drivers/gpu/drm/arm/malidp_planes.c @@ -310,17 +310,13 @@ static int malidp_se_check_scaling(struct malidp_plane *mp, static u32 malidp_get_pgsize_bitmap(struct malidp_plane *mp) { - u32 pgsize_bitmap = 0; + struct iommu_domain *mmu_dom; - if (iommu_present(&platform_bus_type)) { - struct iommu_domain *mmu_dom = - iommu_get_domain_for_dev(mp->base.dev->dev); + mmu_dom = iommu_get_domain_for_dev(mp->base.dev->dev); + if (mmu_dom) + return mmu_dom->pgsize_bitmap; - if (mmu_dom) - pgsize_bitmap = mmu_dom->pgsize_bitmap; - } - - return pgsize_bitmap; + return 0; } /* -- 2.28.0.dirty _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
