linux-kernel - Re: [PATCH 4/4] ALSA: oxygen: Updating jack implementation according new ALSA Jacks

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Date:	Mon, 29 Jul 2013 14:10:18 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Felipe Tonello <eu@...ipetonello.com>
Cc:	Mark Brown <broonie@...nel.org>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org,
	David Henningsson <david.henningsson@...onical.com>,
	Wang Xingchao <xingchao.wang@...ux.intel.com>,
	Jaroslav Kysela <perex@...ex.cz>
Subject: Re: [PATCH 4/4] ALSA: oxygen: Updating jack implementation according new ALSA Jacks

At Fri, 26 Jul 2013 12:02:51 -0700,
Felipe Tonello wrote:
> 
> Hi Mark,
> 
> On Fri, Jul 26, 2013 at 11:56 AM, Mark Brown <broonie@...nel.org> wrote:
> > On Fri, Jul 26, 2013 at 11:25:33AM -0700, Felipe F. Tonello wrote:
> >> From: "Felipe F. Tonello" <eu@...ipetonello.com>
> >>
> >> ALSA standard jacks already are implemented using ALSA KControl.
> >> So there is no need implement that itself or to use snd_jack
> >> for input events only.
> >
> > Similar changlog comment as on the ASoC patch and...
> 
> Ok.
> 
> >
> >>       snd_jack_new(chip->card, "Headphone",
> >> -                  SND_JACK_HEADPHONE, &data->hp_jack);
> >> +                  SND_JACK_HEADPHONE, 0, &data->hp_jack);
> >>       xonar_ds_handle_hp_jack(chip);
> >
> > ...this really ought to be done as part of the commit that adds the
> > parameter since it breaks the build until this patch is applied.
> 
> But that's why is a patch series. But as you say, are you suggesting
> me to propose this changes in one patch only?

The basic rule of the patch series is:
- they are split in a logical manner
- each commit must not break the build

The second rule is important especially for bisection and
backporting.  You could have done in a different way (e.g. adding a
new function like snd_jack_new_with_index() instead of changing
snd_jack_new() itself).  Which way is better, depends on the
implementation details.


Takashi
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