On Sat, 16 Sept 2023 at 11:15, Danilo Krummrich <dakr@xxxxxxxxxx> wrote: > > Fix the following warning. > > drivers/gpu/drm/nouveau/nouveau_fence.c:210:45: sparse: sparse: > incorrect type in initializer (different address spaces) > @@ expected struct nouveau_channel *chan > @@ got struct nouveau_channel [noderef] __rcu *channel Reviewed-by: Dave Airlie <airlied@xxxxxxxxxx> > > We're just about to emit the fence, there is nothing to protect against > yet, hence it is safe to just cast __rcu away. > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > Closes: https://lore.kernel.org/oe-kbuild-all/202309140340.BwKXzaDx-lkp@xxxxxxxxx/ > Fixes: 978474dc8278 ("drm/nouveau: fence: fix undefined fence state after emit") > Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx> > --- > drivers/gpu/drm/nouveau/nouveau_fence.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c > index 61d9e70da9fd..ca762ea55413 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_fence.c > +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c > @@ -207,7 +207,7 @@ nouveau_fence_context_new(struct nouveau_channel *chan, struct nouveau_fence_cha > int > nouveau_fence_emit(struct nouveau_fence *fence) > { > - struct nouveau_channel *chan = fence->channel; > + struct nouveau_channel *chan = unrcu_pointer(fence->channel); > struct nouveau_fence_chan *fctx = chan->fence; > struct nouveau_fence_priv *priv = (void*)chan->drm->fence; > int ret; > -- > 2.41.0 >
