linux-kernel - Re: azx_probe() called twice

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <s5hpo2njwgp.wl-tiwai@suse.de>
Date:   Wed, 25 Apr 2018 14:34:46 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Paul Menzel <pmenzel+alsa-devel@...gen.mpg.de>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: azx_probe() called twice

On Wed, 25 Apr 2018 14:29:31 +0200,
Paul Menzel wrote:
> 
> Dear Takashi,
> 
> 
> On 04/25/18 13:58, Takashi Iwai wrote:
> > On Wed, 25 Apr 2018 13:48:27 +0200, Paul Menzel wrote:
> 
> >> With the attached debug patch, `azx_probe()` seems to have been called
> >> twice on the ASRock E350M1. Is that expected? It also differs, that
> >> it’s only called once during some boots, and twice during others.
> >
> > How many HD-audio devices does it have?
> 
> I’d say one (ALC892), but how do I verify that?

I meant HD-audio controllers.

> Please find lspci and
> Linux logs attached from an older boot with Linux 4.11.
....
> 00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Wrestler HDMI Audio
....
> 00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) (rev 40)

So you have two HD-audio controllers (one for HDMI/DP and another for
Realtek codec).  It's expected behavior that azx_probe() gets called
twice.


Takashi