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 BDD7221CC44; Mon, 27 Oct 2025 06:45:17 +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=1761547517; cv=none; b=eBZtoWjopEdEfowAI4Vrltuv+k1L6ZzXlvtPXRsTY7XDAN9WDDEuHPnAK4uynqMpzuB+Wxl341tJtSfkk96YGMe0wav45Bp+6DaTjDOgomarZcUh/cx9WHGjWeVZAAuotynPtang5sxzyauGQV7kKg4ih1nECjyjpgyIleoymwk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761547517; c=relaxed/simple; bh=OzLMeTaq+DRNfW8WOBypVoKSFC/FRHIk1riY1tSJOuY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=IFoFJk9isJekyNDIjRVYtuc/v+bFACCLO4gzDqBRL5W725PlAmL4YzNL2Vj0ndTMzeoO9LH/eZEMeLN4jHKKkf9O98TQ2L2oTR1teoZh+H0seUlIq3gwm+A53dZX1AzeTlM8mpvh0lJYiPsVRyuMYJLQ4XrV2WpNd80gwbFOpKY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nfd413Fe; 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="nfd413Fe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF2A3C4CEF1; Mon, 27 Oct 2025 06:45:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1761547517; bh=OzLMeTaq+DRNfW8WOBypVoKSFC/FRHIk1riY1tSJOuY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nfd413FeFBKRmS17CZB1DqcUhVPeC+IOZj4PW7XCOl1e55iLmz6MqOZQWYYeVLnNn z1/QKFSBL+X+88h3+xjeOsCdrfEqOhx9JHupOK7rvLBlwo6U0XGY6QY/DBRABFfJg+ SOZcHmzAgi5ByzVMtlLTFV0zB7MAZfya8ChVL3VU= Date: Mon, 27 Oct 2025 07:45:13 +0100 From: Greg Kroah-Hartman To: Heyi Guo Cc: linux-usb@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "David S. Miller" , Jakub Kicinski , Takashi Iwai Subject: Re: Why hasn't the patch "r8152: Fix a deadlock by doubly PM resume" back ported to stable branches? Message-ID: <2025102742-mumbling-starlit-c651@gregkh> References: <5e065a78-b371-4ef7-8ce6-a902f80e2b02@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <5e065a78-b371-4ef7-8ce6-a902f80e2b02@linux.alibaba.com> On Mon, Oct 27, 2025 at 02:04:09PM +0800, Heyi Guo wrote: > Hi all, > > We found that below bug fix patch had not been back ported to stable > branches, like linux-5.10.y. Is there any special reason? > > commit 776ac63a986d211286230c4fd70f85390eabedcd > Author:     Takashi Iwai > AuthorDate: Wed Jul 14 19:00:22 2021 +0200 > Commit:     David S. Miller > CommitDate: Wed Jul 14 14:57:55 2021 -0700 > >     r8152: Fix a deadlock by doubly PM resume > >     r8152 driver sets up the MAC address at reset-resume, while >     rtl8152_set_mac_address() has the temporary autopm get/put. This may >     lead to a deadlock as the PM lock has been already taken for the >     execution of the runtime PM callback. > >     This patch adds the workaround to avoid the superfluous autpm when >     called from rtl8152_reset_resume(). > >     Link: https://bugzilla.suse.com/show_bug.cgi?id=1186194 >     Signed-off-by: Takashi Iwai >     Signed-off-by: David S. Miller Because it was not marked to be backported at all. If you feel it should be, please send a tested version to stable@vger.kernel.org for inclusion. thanks, greg k-h