linux-kernel - Re: [alsa-devel] ALSA: nm256: Fine-tuning for three function implementations

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Date:   Tue, 28 Nov 2017 14:10:53 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Ondrej Zary <linux@...nbow-software.org>,
        alsa-devel@...a-project.org
Cc:     Takashi Iwai <tiwai@...e.de>,
        Arvind Yadav <arvind.yadav.cs@...il.com>,
        Takashi Sakamoto <o-takashi@...amocchi.jp>,
        kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [alsa-devel] ALSA: nm256: Fine-tuning for three function
 implementations

>> Can you get the impression that the shown transformation patterns were
>> correctly applied for the source file “sound/pci/nm256/nm256.c”?
> 
> Have you tested the driver?

Which results do you expect from a corresponding system test?


> Please don't "improve" working drivers unless

I am trying to improve software components also for devices to which
I have not got direct access so far.


> Patches like this are known to cause regressions.

Do you prefer to keep this software area “frozen” anyhow?


> If the hardware is rare (like the NM256), the regression can hit years later
> when someone with such HW upgrades distro (e.g. Debian stable).

Have you got any resources to reduce corresponding concerns?

Regards,
Markus