diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c index 04140e0110be..52420a1edca5 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c @@ -258,7 +258,7 @@ nvkm_uchan_map(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_chan *chan = nvkm_uchan(object)->chan; struct nvkm_device *device = chan->cgrp->runl->fifo->engine.subdev.device; - if (chan->func->userd->bar < 0) + if (!chan->func->userd->bar) return -ENOSYS; *type = NVKM_OBJECT_MAP_IO; @@ -317,6 +317,15 @@ nvkm_uchan = { .uevent = nvkm_uchan_uevent, }; +struct nvkm_chan * +nvkm_uchan_chan(struct nvkm_object *object) +{ + if (WARN_ON(object->func != &nvkm_uchan)) + return NULL; + + return nvkm_uchan(object)->chan; +} + int nvkm_uchan_new(struct nvkm_fifo *fifo, struct nvkm_cgrp *cgrp, const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject) |