From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1396C43219 for ; Mon, 7 Nov 2022 08:16:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230473AbiKGIP7 (ORCPT ); Mon, 7 Nov 2022 03:15:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230406AbiKGIP5 (ORCPT ); Mon, 7 Nov 2022 03:15:57 -0500 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43ED3C1F for ; Mon, 7 Nov 2022 00:15:56 -0800 (PST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 0416E22571; Mon, 7 Nov 2022 08:15:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1667808955; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to; bh=TYfc/EsVGRmCc7SBIdBca5mE5Y/LQa2VjsIJ/aY8HW8=; b=T4Nekk7z9EFyewlyPb+A2VawZpIb+scc94UmLzwJRKyOMs9F3iVQUsF+ClSeq5cyXa6sAp PPhnw1JyvA5MEYTEnYcRLhIbgD1BfS2PXlCimXbdeMciiuQnrlLXx11H5+r3FwfhZjYf77 qZn77QCcZiuc1tAnZUc4ILPGYcF0K10= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1667808955; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to; bh=TYfc/EsVGRmCc7SBIdBca5mE5Y/LQa2VjsIJ/aY8HW8=; b=uwsl9zXH4a2LlTfm7UpLmwIOy7gLKo0F4/1WRNqQ1GYypWzQc9pS9XH7iOG3r35g+onwmT jEWVkbJYCYcQf/BA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id BDAD713AC7; Mon, 7 Nov 2022 08:15:54 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 9joRLLq+aGPjIgAAMHmgww (envelope-from ); Mon, 07 Nov 2022 08:15:54 +0000 Date: Mon, 07 Nov 2022 09:15:54 +0100 Message-ID: <87pmdztc1x.wl-tiwai@suse.de> From: Takashi Iwai To: =?ISO-2022-JP?B?GyRCZ2hENhsoQg==?= Cc: , , , Subject: Re: =?GB2312?B?u9i4tDo=?= Re: =?GB2312?B?u9i4tDo=?= Re: [PATCH] ALSA: usb-audio: fix Hamedal C20 usb camero disconnect issue In-Reply-To: <1ky6wp89pgz-1ky6wp89ph0@nsmail6.0> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.2 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 07 Nov 2022 02:33:57 +0100, 艾超 wrote: > > Yes, the audio device is a UAC1 device, and it used set_sample_rate_v1 to > set sample. > > So, I add a quirk to keep up the USB interface up even if the audio stream > is closed. Well, my question is also about the parameter changes. This interface reset doesn't cause any problem? Or we should skip the interface clear there, too? Takashi > > ---- > > 主　题：Re: 回复: Re: [PATCH] ALSA: usb-audio: fix Hamedal C20 usb camero > disconnect issue > 日　期：2022-11-04 17:59 > 发件人：Takashi Iwai > 收件人：艾超 > > On Fri, 04 Nov 2022 10:50:48 +0100, > 艾超 wrote: > > > > I 'm sorry, I don't know whether you receiver my mail for 'lsusb -v' to > > Hamedal C20 > > I received your previous mails including lsusb -v output. But the > post was filtered out by some reason? > > So the audio device looks like a UAC1 device. And this one requires > to keep up the USB interface up even if the audio stream is closed > (not about the parameter changes)? > > Takashi > >