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author | David S. Miller <davem@davemloft.net> | 2013-08-04 04:36:46 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2013-08-04 04:36:46 (GMT) |
commit | 0e76a3a587fc7abda2badf249053b427baad255e (patch) | |
tree | 646a1da67dc25654552028225ca4b7a0a8043cc9 /drivers/gpu/drm/nouveau/core/subdev/vm/base.c | |
parent | fba3679d34511c42bf452e89dda457a1219eb43a (diff) | |
parent | 72a67a94bcba71a5fddd6b3596a20604d2b5dcd6 (diff) | |
download | linux-fsl-qoriq-0e76a3a587fc7abda2badf249053b427baad255e.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Merge net into net-next to setup some infrastructure Eric
Dumazet needs for usbnet changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/vm/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/vm/base.c | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c index 67fcb6c..ef3133e 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c @@ -361,7 +361,7 @@ nouveau_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length, INIT_LIST_HEAD(&vm->pgd_list); vm->vmm = vmm; - vm->refcount = 1; + kref_init(&vm->refcount); vm->fpde = offset >> (vmm->pgt_bits + 12); vm->lpde = (offset + length - 1) >> (vmm->pgt_bits + 12); @@ -441,8 +441,9 @@ nouveau_vm_unlink(struct nouveau_vm *vm, struct nouveau_gpuobj *mpgd) } static void -nouveau_vm_del(struct nouveau_vm *vm) +nouveau_vm_del(struct kref *kref) { + struct nouveau_vm *vm = container_of(kref, typeof(*vm), refcount); struct nouveau_vm_pgd *vpgd, *tmp; list_for_each_entry_safe(vpgd, tmp, &vm->pgd_list, head) { @@ -458,27 +459,19 @@ int nouveau_vm_ref(struct nouveau_vm *ref, struct nouveau_vm **ptr, struct nouveau_gpuobj *pgd) { - struct nouveau_vm *vm; - int ret; - - vm = ref; - if (vm) { - ret = nouveau_vm_link(vm, pgd); + if (ref) { + int ret = nouveau_vm_link(ref, pgd); if (ret) return ret; - vm->refcount++; + kref_get(&ref->refcount); } - vm = *ptr; - *ptr = ref; - - if (vm) { - nouveau_vm_unlink(vm, pgd); - - if (--vm->refcount == 0) - nouveau_vm_del(vm); + if (*ptr) { + nouveau_vm_unlink(*ptr, pgd); + kref_put(&(*ptr)->refcount, nouveau_vm_del); } + *ptr = ref; return 0; } |