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 46D152DF137; Thu, 16 Jul 2026 13:41:35 +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=1784209296; cv=none; b=fwca++uBh1F8eNuh6u/ZHiaXR2QMVVaQKtwZfQG9PnV5cM8DHIBX926aBCtkrWLi6SxYUYEsmhEOJllhpBFMJzJK6fUW899WigH8cGZ/Jf6+tHG+sNvrxyd3FSX/5OMFadpTWrCqyy+O/BqWOzulEkGUxK4BZdlXaB9BEdsqhic= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784209296; c=relaxed/simple; bh=bWwUYtANdnp7GhfUNoaEvIBCiaZIeSqyPOlhqqEvis8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AjELgxQYPnRwK9uYThlHRaiSSdgg8UOEa7paTAYCtFkuMdkLhbBSvUEaw+K/C+9Tnbn8GrsdYcnJETYNUt4K4TzC7Ht9yLvW4g0CRkDSZ7HerOzPY1ZGbfchuR4uLYw3UTWF4d4WsGM/trebT2bmish7s6NFBSygvHVHclMEBoQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jCzan/Pf; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jCzan/Pf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB1911F000E9; Thu, 16 Jul 2026 13:41:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784209295; bh=9qshh9dg336I9p/NAV7HLr1pgkDgtc22IfJsMQqiSag=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=jCzan/PfyD6jiDiPr9ZPRkMgHzQif+Kw4y5HGrRC/qd2F/CaQzmkS9kvhXcDpauGm qY4IkVSvhUpbtkMGe9BdR5xUbZApDUUNZho/03groGnNeoIOr3djUtdP6raqV6IBzc LEtid5Mf+ac1GNvidrjrvl/d5TZaMcnjMc18zkGA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ratheesh Kannoth , Manivannan Sadhasivam , Bjorn Helgaas , Vidya Sagar Subject: [PATCH 7.1 132/518] PCI: host-common: Request bus reassignment when not probe-only Date: Thu, 16 Jul 2026 15:26:40 +0200 Message-ID: <20260716133050.745377788@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260716133047.772246337@linuxfoundation.org> References: <20260716133047.772246337@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ratheesh Kannoth commit fda8749ba73638f5bbca3ffb39bc6861eb3b23fa upstream. pci_host_common_init() is used by several generic ECAM host drivers. After PCI core changes around pci_flags and preserve_config, these hosts no longer opted into full bus number reassignment the way they did before, which broke enumeration of devices on a Marvell CN106XX board. When PCI_PROBE_ONLY is not set, add PCI_REASSIGN_ALL_BUS so pci_scan_bridge_extend() takes the reassignment path: bus numbers can be assigned from firmware EA data (e.g. pci_ea_fixed_busnrs()). Skip the flag in probe-only mode so existing assignments are not overridden. Fixes: 7246a4520b4b ("PCI: Use preserve_config in place of pci_flags") Closes: https://lore.kernel.org/all/abkqm_LCd9zAM8cW@rkannoth-OptiPlex-7090/ Signed-off-by: Ratheesh Kannoth [mani: added stable tag] Signed-off-by: Manivannan Sadhasivam [bhelgaas: add problem report link] Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org Cc: Vidya Sagar Link: https://patch.msgid.link/20260414081730.3864372-1-rkannoth@marvell.com Signed-off-by: Greg Kroah-Hartman --- drivers/pci/controller/pci-host-common.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/pci/controller/pci-host-common.c +++ b/drivers/pci/controller/pci-host-common.c @@ -68,6 +68,10 @@ int pci_host_common_init(struct platform if (IS_ERR(cfg)) return PTR_ERR(cfg); + /* Do not reassign bus numbers if probe only */ + if (!pci_has_flag(PCI_PROBE_ONLY)) + pci_add_flags(PCI_REASSIGN_ALL_BUS); + bridge->sysdata = cfg; bridge->ops = (struct pci_ops *)&ops->pci_ops; bridge->enable_device = ops->enable_device;