From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bmailout1.hostsharing.net (bmailout1.hostsharing.net [83.223.95.100]) (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 8275413635B; Thu, 6 Mar 2025 16:48:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.223.95.100 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741279699; cv=none; b=u6lVzXtEhuW672ORl0XZEcP423+Tj5pKwgJhWYicyqteXQEsGdc70QsgvkaiBxXpO1ys6O9Ws9JJf+vSTorRMqMhrrhPJ9i4NjfLiLPdLBAaORqZEI0Cy/a3/uFcXXJl1Qrb+oFPsnJSZ6l81doZ+83jYuODGBCmOsHcfiq3i9A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741279699; c=relaxed/simple; bh=cRxH/eNjPom3M8pp6oEsvNCyvMgaeq+dOvETtm3u/qE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PMVtyZAYuxvE76UWoES0N9dGLu37dB0GCucZ+0Cq3xLcD2X7SQlVPSXEN6OwQCQsOBR1xt6sUCI0ZC6WtvA21Lkyl/9s5pKJhO7Clg0cKJISyTmIBt31x6pkbETJAxbIR2ZCQeRQ1Iac+l/6UMBCAqtPUTTSPWg26rt+6qAAl18= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de; spf=none smtp.mailfrom=h08.hostsharing.net; arc=none smtp.client-ip=83.223.95.100 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=h08.hostsharing.net Received: from h08.hostsharing.net (h08.hostsharing.net [IPv6:2a01:37:1000::53df:5f1c:0]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "*.hostsharing.net", Issuer "RapidSSL TLS RSA CA G1" (verified OK)) by bmailout1.hostsharing.net (Postfix) with ESMTPS id 500AD300115FB; Thu, 6 Mar 2025 17:48:13 +0100 (CET) Received: by h08.hostsharing.net (Postfix, from userid 100393) id 35FC21F5C3; Thu, 6 Mar 2025 17:48:13 +0100 (CET) Date: Thu, 6 Mar 2025 17:48:13 +0100 From: Lukas Wunner To: Bjorn Helgaas Cc: "Chia-Lin Kao (AceLan)" , Bjorn Helgaas , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] PCI: pciehp: Fix system hang during resume with daisy-chained hotplug controllers Message-ID: References: <20241022130243.263737-1-acelan.kao@canonical.com> <20250305230959.GA318387@bhelgaas> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250305230959.GA318387@bhelgaas> On Wed, Mar 05, 2025 at 05:09:59PM -0600, Bjorn Helgaas wrote: > On Tue, Oct 22, 2024 at 09:02:43PM +0800, Chia-Lin Kao (AceLan) wrote: > > A system hang occurs when multiple PCIe hotplug controllers in a daisy-chained > > setup (like a Thunderbolt dock with NVMe storage) resume from system sleep. Thanks Bjorn for reminding me of AceLan's report. This appears to be the same issue Mika and Kenneth reported, a fix is currently being worked on in this thread: https://lore.kernel.org/all/Z8nRI6xjGl3frMe5@wunner.de/