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 E48643D6D; Mon, 23 Dec 2024 16:09:46 +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=1734970187; cv=none; b=ju+c6qhrjGUd3xY5wG7uuq/viwOqdHDh/ZUoYicMgNgmR8p47j454bmmnO3ajGBhKrmHFuKKfDuoL5kFe7LRun0rPlP9l/Sfy2TXIFGkRdfnqWO+2IJoXi7zwNvy17Gdj4Ju6/aeZbpe2QqD7jslkjp3ZL9uaypKebPyK9iBa64= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734970187; c=relaxed/simple; bh=LvvrCMPI0EH8qeGw+NVSMBfdWx0GG7xhW1zLDNFgVh0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Me1mEaBkY8/nQ6Ft5SgUv/mi5/uGxBj2MdaxAOgEo4FAr/pOJN/0hfW6bBdF7DdmnO/YDAfKw/bCxodrhnSi2OAMYO8QaU3lgjPC0SoedKShwQVai8YMpwOUCzQpsFvuEUES1eSdA3mmBR/b4FKbgTK+3XPVqzidG1AvpYug7NE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vxeKomhU; 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="vxeKomhU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53C20C4CED4; Mon, 23 Dec 2024 16:09:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1734970186; bh=LvvrCMPI0EH8qeGw+NVSMBfdWx0GG7xhW1zLDNFgVh0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vxeKomhU1nvuxjjuRAobi0guW0Tq6o/2LCztzpk3mfFzvm04POsTa+eRur+P1MWFi kFDYYHHkSBE5acom3IB4A+VC17DZXUhohckMH8GornFW4X6RPut4v3R1qLpawKCzpi MQ/ogmYcLpz2bEWqHhXZMLoIDzSdla1krLDTAORU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kai-Heng Feng , Bjorn Helgaas , Sasha Levin Subject: [PATCH 6.6 010/116] PCI/AER: Disable AER service on suspend Date: Mon, 23 Dec 2024 16:58:00 +0100 Message-ID: <20241223155359.943043081@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241223155359.534468176@linuxfoundation.org> References: <20241223155359.534468176@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kai-Heng Feng [ Upstream commit 5afc2f763edc5daae4722ee46fea4e627d01fa90 ] If the link is powered off during suspend, electrical noise may cause errors that are logged via AER. If the AER interrupt is enabled and shares an IRQ with PME, that causes a spurious wakeup during suspend. Disable the AER interrupt during suspend to prevent this. Clear error status before re-enabling IRQ interrupts during resume so we don't get an interrupt for errors that occurred during the suspend/resume process. Link: https://bugzilla.kernel.org/show_bug.cgi?id=209149 Link: https://bugzilla.kernel.org/show_bug.cgi?id=216295 Link: https://bugzilla.kernel.org/show_bug.cgi?id=218090 Link: https://lore.kernel.org/r/20240416043225.1462548-2-kai.heng.feng@canonical.com Signed-off-by: Kai-Heng Feng [bhelgaas: drop pci_ancestor_pr3_present() etc, commit log] Signed-off-by: Bjorn Helgaas Signed-off-by: Sasha Levin --- drivers/pci/pcie/aer.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index c9afe4362835..eeb9ea9044b4 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -1342,6 +1342,22 @@ static int aer_probe(struct pcie_device *dev) return 0; } +static int aer_suspend(struct pcie_device *dev) +{ + struct aer_rpc *rpc = get_service_data(dev); + + aer_disable_rootport(rpc); + return 0; +} + +static int aer_resume(struct pcie_device *dev) +{ + struct aer_rpc *rpc = get_service_data(dev); + + aer_enable_rootport(rpc); + return 0; +} + /** * aer_root_reset - reset Root Port hierarchy, RCEC, or RCiEP * @dev: pointer to Root Port, RCEC, or RCiEP @@ -1413,6 +1429,8 @@ static struct pcie_port_service_driver aerdriver = { .service = PCIE_PORT_SERVICE_AER, .probe = aer_probe, + .suspend = aer_suspend, + .resume = aer_resume, .remove = aer_remove, }; -- 2.39.5