From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 576CE3AA4FA; Thu, 6 Aug 2026 01:21:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785979262; cv=none; b=mtRfibQac+kuQ/5Ww+wYTawp5+OimEW4HKLvlnb7YlfZectzUWQuJyscRABa+PckmCcyYwakH2OK1ehXC3JZQdtorNl93xJ0NNuKbC/xLFV1msFADAt9IOTuD1nA+u7u/u9Uk3sitN6PZBpaP8zrMebJyizn6J8lH5fvts09nho= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785979262; c=relaxed/simple; bh=YPFlRkUjM7Z9gVyCdp9VZF5SDWMEoptmeATsjQmQeGo=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=T9rSyyVg3a+wAY0CejQd6yzez5uwL+kTdmO3kQm7xCx4kgo4McrYmyR7BNIxAscM+Ejp1njwB9YdVucSvPRlf5CDyrEqiec5j8KdZEcSbQLHXJJPmSXAxRGIMVl/Ww8ehyrYXWCj35caf40hvqNK/RUKloXF7D8bqwBEDg+BHy8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dbly2vqf; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dbly2vqf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB42A1F00A3A; Thu, 6 Aug 2026 01:21:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785979261; bh=3fxGL6riYetsJkvSTv/2CuF78hbEv/cEtHlqHYVry5Y=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=dbly2vqfuWGVlTbj4USEE8wVTz0FoS8BQlgZNC10EShvODsTEz2p/4/rsmV5oua1c 7L5xMl27F0EheFM7iSKUbU+o+SHXD2Lv2Yxh6rJ0aSW0sN3y3KLYQpSs6d3KqEnrkh GjiTN6+lnWkUfk4dW8hkYnqriGr8DXdyzSZIEwOXsIHF4W3LUfaBxaczBAx3cKiNHU yMUt1sI+Ldccnai2BihfHHmybxaHoS1mvRcAbsGDJ9wz6oQghjAg++BUZGMNxYQMsN zEDWkLwtAA4Huj8voTESkxEPjrV9EuWWcQjhnBMyo0g6tIB1E2B4g6O0RL+WocyZyj l+dQBZXmSb0yQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id D09FB392FFF2; Thu, 6 Aug 2026 01:20:21 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH] net: usb: cdc_ether: add quirk for AMI BMC stale link events From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178597922038.593652.1432741241165291582.git-patchwork-notify@kernel.org> Date: Thu, 06 Aug 2026 01:20:20 +0000 References: <20260730051341.24930-1-guojinhui.liam@bytedance.com> In-Reply-To: <20260730051341.24930-1-guojinhui.liam@bytedance.com> To: Jinhui Guo Cc: oliver@neukum.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-usb@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net-next.git (main) by Jakub Kicinski : On Thu, 30 Jul 2026 13:13:41 +0800 you wrote: > On AMD Genoa/Turin platforms the BMC-provided USB-Ethernet gadget > (American Megatrends, VID 0x046b PID 0xffb0) intermittently fails to > respond to ARP after AC cold boot. usbmon captures a stale > NETWORK_CONNECTION(off) immediately followed by > NETWORK_CONNECTION(on) on the interrupt endpoint (~130us apart) > after enumeration. Because alloc_netdev() leaves > __LINK_STATE_NOCARRIER cleared, netif_carrier_ok() returns true > when the spurious OFF arrives, so usbnet_cdc_status() cannot > recognise it as redundant and schedules EVENT_LINK_CHANGE. > __handle_link_change() then calls unlink_urbs(), killing ~60 rx > URBs whose payload has already been DMA'd into memory — xHCI trace > confirms them completing as -ECONNRESET with non-zero residual > length. rx_complete() drops these unconditionally. The following > ON restores the carrier and re-submits URBs, but the ARP reply is > already lost; the interface looks "up but silent" until ifdown/ifup. > > [...] Here is the summary with links: - net: usb: cdc_ether: add quirk for AMI BMC stale link events https://git.kernel.org/netdev/net-next/c/089ca284afb0 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html