From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: [PATCH] snd-usb-audio with multiple audio functions
Date: Mon, 06 Jun 2011 13:44:01 +0200
Message-ID: <4DECBD81.4090007@ladisch.de>
References: <4DEC787C.3050805@yahoo.de>
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To: Rolf Meeser <rolfm_9dq@yahoo.de>
Cc: Takashi Iwai <tiwai@suse.de>, alsa-devel@alsa-project.org
List-Id: alsa-devel@alsa-project.org

Rolf Meeser wrote:
> +		if (usb_chip[i] &&
> +			(usb_chip[i]->dev == dev) &&
> +			(usb_chip[i]->ctrl_intf) &&
> +			(usb_chip[i]->ctrl_intf->desc.bInterfaceNumber == ifnum)) {

Many audio devices with multiple vendor-specific interfaces do not have
a control interface.  This code would split them into multiple cards.


Regards,
Clemens