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Code Issues Releases Wiki Activity

drm/nouveau/ttm: fix crash as a result of a recent ttm change

Browse source 
"drm/ttm: callback move_notify any time bo placement change v4" failed to
avoid a NULL pointer dereference in nouveau caused by move_notify being
expected to handle that case now.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-12-22 15:20:21 +10:00
parent b2e0d195d2
commit f7b24c42da
3 changed files with 6 additions and 7 deletions
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8
drivers/gpu/drm/nouveau/nouveau_bo.c
View file

@ -682,8 +682,7 @@ nouveau_vma_getmap(struct nouveau_channel *chan, struct nouveau_bo *nvbo,
if (mem->mem_type == TTM_PL_VRAM)
nouveau_vm_map(vma, node);
else
nouveau_vm_map_sg(vma, 0, mem->num_pages << PAGE_SHIFT,
node, node->pages);
nouveau_vm_map_sg(vma, 0, mem->num_pages << PAGE_SHIFT, node);
return 0;
}
@ -810,7 +809,6 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
static void
nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem)
{
struct nouveau_mem *node = new_mem->mm_node;
struct nouveau_bo *nvbo = nouveau_bo(bo);
struct nouveau_vma *vma;
@ -822,7 +820,7 @@ nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem)
nvbo->page_shift == vma->vm->spg_shift) {
nouveau_vm_map_sg(vma, 0, new_mem->
num_pages << PAGE_SHIFT,
node, node->pages);
new_mem->mm_node);
} else {
nouveau_vm_unmap(vma);
}
@ -1173,7 +1171,7 @@ nouveau_bo_vma_add(struct nouveau_bo *nvbo, struct nouveau_vm *vm,
nouveau_vm_map(vma, nvbo->bo.mem.mm_node);
else
if (nvbo->bo.mem.mem_type == TTM_PL_TT)
nouveau_vm_map_sg(vma, 0, size, node, node->pages);
nouveau_vm_map_sg(vma, 0, size, node);
list_add_tail(&vma->head, &nvbo->vma_list);
vma->refcount = 1;

3
drivers/gpu/drm/nouveau/nouveau_vm.c
View file

@ -78,9 +78,10 @@ nouveau_vm_map(struct nouveau_vma *vma, struct nouveau_mem *node)
void
nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
struct nouveau_mem *mem, dma_addr_t *list)
struct nouveau_mem *mem)
{
struct nouveau_vm *vm = vma->vm;
dma_addr_t *list = mem->pages;
int big = vma->node->type != vm->spg_shift;
u32 offset = vma->node->offset + (delta >> 12);
u32 bits = vma->node->type - 12;

2
drivers/gpu/drm/nouveau/nouveau_vm.h
View file

@ -89,7 +89,7 @@ void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *);
void nouveau_vm_unmap(struct nouveau_vma *);
void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
struct nouveau_mem *, dma_addr_t *);
struct nouveau_mem *);
/* nv50_vm.c */
void nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,