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Date:   Wed, 24 Feb 2021 08:57:28 +0100
Message-ID: <s5hczwpucd3.wl-tiwai@suse.de>
From:   Takashi Iwai <tiwai@suse.de>
To:     George Harker <george@george-graphics.co.uk>
Cc:     alsa-devel@alsa-project.org, Clemens Ladisch <clemens@ladisch.de>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sound/usb generate midi streaming substream names from jack names
In-Reply-To: <20210221094333.30499-1-george@george-graphics.co.uk>
References: <20210221094148.30447-1-george@george-graphics.co.uk>
        <20210221094333.30499-1-george@george-graphics.co.uk>
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On Sun, 21 Feb 2021 10:43:32 +0100,
George Harker wrote:
> 
> A number of devices have named substreams which are hard to remember /
> decypher from <device> MIDI n names.  Eg. Korg puts a pass through on
> one substream and iConnectivity devices name the connections.
> 
> This makes it easier to connect to the correct device.  Devices which
> handle naming through quirks are unaffected by this change.
> 
> Addresses TODO comment in sound/usb/midi.c
> 
> Signed-off-by: George Harker <george@george-graphics.co.uk>

The code changes look almost OK, but could you try the following?

- Split the patch: one for rewriting with the structs in
  linux/usb/midi.h, another for adding the MIDI device name support

- Try to avoid magic numbers: a few places should be replaced with
  sizeof() or ARRAY_SIZE().


thanks,

Takashi