From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3628023BB for ; Wed, 31 Jul 2024 09:15:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722417324; cv=none; b=KRn1Brh9eWsHriumDna8da7VafDY85SmXlSBNM9Pil+o9oeqyr8YaqjJRaoylayGClDETw2CtkXHaORa+FgxIJeB2gwpJisd7ZANeFeet8pyJDMShfyFmutd11sO7JfYkfDyOs1Edq1MRWbKTg7teDOt200K335fAoVTJA1KSM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722417324; c=relaxed/simple; bh=VUVEJWIPuADA7hUespGWuReHx2Ybc1MeYfyOMJsyXeU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=TZ0KTPqaSCzDzT83fkwtpsQMPtDsLiItFb+4ViPGaS2bHS2YOrVtU2XkNTEFRL0fJ6usJxUrYM4U7+gRoeWMd61rpYq2fpKo7TCuwGjsTFx8IKzD9Oab+3f239F6C5xRuC61yDD/S5PPqEznuH/0IM+wGkNpN9QrxqC824KKVL8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Hh2G9NJB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Hh2G9NJB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 30E42C116B1; Wed, 31 Jul 2024 09:15:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1722417323; bh=VUVEJWIPuADA7hUespGWuReHx2Ybc1MeYfyOMJsyXeU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Hh2G9NJBoT6FoAjP2hGcmhcf9JZ+HuGFR2sBFiWL4KNX048LlttUH1gKyYRkD6Bz8 UfaeyPEbkzmsBvPuAg0JYAw2neai+siS0xfZDoAWPOWce3SsyHKExr1OHeYlaks6Z9 9s6PC7QXShGiVRj1E1bnpo+E4h/77oRX8ABz3piw= Date: Wed, 31 Jul 2024 11:15:19 +0200 From: "gregkh@linuxfoundation.org" To: =?utf-8?B?6IOh6L+e5Yuk?= Cc: "akpm@linux-foundation.org" , "linux-kernel@vger.kernel.org" , "opensource.kernel" Subject: Re: =?utf-8?B?562U5aSNOiBbUEFUQ0ggdjFdIHVz?= =?utf-8?Q?b=3A_gadget=3A_uvc=3A_Fixed_th?= =?utf-8?Q?e?= abnormal enumeration problem of mobile phone as UVC camera. Message-ID: <2024073132-perjurer-coeditor-40a3@gregkh> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Wed, Jul 31, 2024 at 08:46:25AM +0000, 胡连勤 wrote: > Hello linux community expert: > > The following are answers to several questions about this patch: > > 1.Why does the dwc3 controller matter here? What about other controllers? > We have tested that both the dwc3 controller and the mtu3 controller > have such problems under the uvc function combination. > > 2.Why was this set to be true to start with? What commit id does this > fix? Should it be backported to older kernels, and if so, how far back? > Set to true for commit records: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f277bf27cf5cd56bcd1c4b95ae140f61680a6e83 > > It seems that the f_uvc driver logic is optimized, and the code logic is more reasonable. Please use the proper "Fixes:" tag on the commit. > > kernel5.10, kernel 5.15, kernel6.1, and kernel6.6 versions all need to be synchronized, > From the current point of view, these kernel versions will be compatible with Android 14 and newer versions. So this has never worked at all? How is that possible? Others have used this properly, are you sure nothing is wrong somewhere else? thanks, greg k-h