Re: [5.14 regression] "ALSA: core: Add continuous and vmalloc mmap ops" breaks Intel SST audio

On Sun, 01 Aug 2021 12:27:28 +0200, Hans de Goede wrote:

Hi,

On 7/31/21 10:10 AM, Takashi Iwai wrote:

...

On Fri, 30 Jul 2021 22:04:00 +0200, Hans de Goede wrote:

...

Hi All;,

As discussed in the "5.14 regression, Intel SST (BYT) audio no longer works" thread, audio on X86 devices using the Intel SST driver no longer works with 5.14.

After poking at this for a while I've found the culprit: 30b7ba6972d5 ("ALSA: core: Add continuous and vmalloc mmap ops")

If I revert that single commit then everything works fine again with 5.14.

Does the patch below fix the problem?

Yes that seems to fix things, thank you.

Great, I'll cook up and submit the proper patch.

thanks,

Takashi