drm/nouveau: remove explicit unmaps

If the VMA is being deleted, we don't need to explicity unmap first
anymore.  The MMU code will automatically merge the operations into
a single page tree walk.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index d89f3e7..f454577 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1414,7 +1414,6 @@ nouveau_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *reg)
        if (!mem->bar_vma.node)
                return;
 
-       nvkm_vm_unmap(&mem->bar_vma);
        nvkm_vm_put(&mem->bar_vma);
 }
 

diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 70fbe5e..17c6efb 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -36,14 +36,8 @@ nouveau_mem_map(struct nouveau_mem *mem,
 void
 nouveau_mem_fini(struct nouveau_mem *mem)
 {
-       if (mem->vma[1].node) {
-               nvkm_vm_unmap(&mem->vma[1]);
-               nvkm_vm_put(&mem->vma[1]);
-       }
-       if (mem->vma[0].node) {
-               nvkm_vm_unmap(&mem->vma[0]);
-               nvkm_vm_put(&mem->vma[0]);
-       }
+       nvkm_vm_put(&mem->vma[1]);
+       nvkm_vm_put(&mem->vma[0]);
 }
 
 int

diff --git a/drivers/gpu/drm/nouveau/nouveau_vmm.c b/drivers/gpu/drm/nouveau/nouveau_vmm.c
index 855d549..6dc14f9 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_vmm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vmm.c
@@ -61,10 +61,8 @@ nouveau_vma_del(struct nouveau_vma **pvma)
 {
        struct nouveau_vma *vma = *pvma;
        if (vma && --vma->refs <= 0) {
-               if (likely(vma->addr != ~0ULL)) {
-                       nouveau_vma_unmap(vma);
+               if (likely(vma->addr != ~0ULL))
                        nvkm_vm_put(&vma->_vma);
-               }
                list_del(&vma->head);
                *pvma = NULL;
                kfree(*pvma);