Re: [PATCH net-next v1] page_pool: check for dma_sync_size earlier

[Ilias Apalodimas]

Hi Furong,

On Fri, 11 Oct 2024 at 05:15, Furong Xu <0x1207@xxxxxxxxx> wrote:
>
> On Thu, 10 Oct 2024 19:53:39 +0800, Yunsheng Lin <linyunsheng@xxxxxxxxxx> wrote:
>
> > Is there any reason that those drivers not to unset the PP_FLAG_DMA_SYNC_DEV
> > when calling page_pool_create()?
> > Does it only need dma sync for some cases and not need dma sync for other
> > cases? if so, why not do the dma sync in the driver instead?
>
> The answer is in this commit:
> https://git.kernel.org/netdev/net/c/5546da79e6cc

I am not sure I am following. Where does the stmmac driver call a sync
with len 0?

Thanks
/Ilias