drm/etnaviv: only try to use the linear window on MMUv1

As the comment above the code states, the linear window is only
available on MMUv1. Don't try to use it on MMUv2.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
index 29a723fabc17a7fc5f81d733501d28780e0dbcc2..e2013b5b3f6a9e41dee7e8da4068534737293e62 100644 (file)
--- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
@@ -115,7 +115,8 @@ int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu,
        mutex_lock(&mmu->lock);
 
        /* v1 MMU can optimize single entry (contiguous) scatterlists */
-       if (sgt->nents == 1 && !(etnaviv_obj->flags & ETNA_BO_FORCE_MMU)) {
+       if (mmu->version == ETNAVIV_IOMMU_V1 &&
+           sgt->nents == 1 && !(etnaviv_obj->flags & ETNA_BO_FORCE_MMU)) {
                u32 iova;
 
                iova = sg_dma_address(sgt->sgl) - memory_base;