On Tue, 06 Jun 2023 15:25:29 +0200,
Yanteng Si wrote:
>
> On loongson controller, after calling snd_hdac_stream_updateb()
> to enable DMA engine, the SDnCTL.STRM will become to zero. We
> need to access SDnCTL in dword to keep SDnCTL.STRM is not changed.
>
> Signed-off-by: Yanteng Si <siyanteng@xxxxxxxxxxx>
> Signed-off-by: Yingkun Meng <mengyingkun@xxxxxxxxxxx>
> ---
> include/sound/hdaudio.h | 1 +
> sound/hda/hdac_stream.c | 6 +++++-
> sound/pci/hda/hda_intel.c | 1 +
> 3 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
> index a1dcc7f97d08..859becb0eaba 100644
> --- a/include/sound/hdaudio.h
> +++ b/include/sound/hdaudio.h
> @@ -348,6 +348,7 @@ struct hdac_bus {
> bool polling_mode:1;
> bool no_intr_polling_mode:1;
> bool needs_damn_long_delay:1;
> + bool access_sdnctl_in_dword:1;
It's worth for the comment here, too.
thanks,
Takashi
