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 C9A8D42A7AF; Thu, 16 Jul 2026 14:26:00 +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=1784211961; cv=none; b=df9+K339Q0xrCL9HmK1sZNVk5DfhAeNI6JQ6Pe2hSBoWskP4epUQbhrXDdJ/RMsaLsLA0LfGd7SRny6ZLda/plgheXJgDbv1hpjLaom5IbF8HbtjhY6CO5noGcNV4LE2/1VG23DO6VErMkiUCA6zb39b5CpllnVlwbTz6ETacXI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784211961; c=relaxed/simple; bh=+W/TyygeEpA4Y9huXHPizVpTx9mkhACWSIELDeHTkIo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tyTjGNjYgLSQxt8T9ZGALk1lj1EY5It5Im++GNQMQtekPaOowJFiTx7siS3m+cmUzmjNuna71qkZ4lGmAn/MVr2BQ/GRXrSUYbPOUqCwDSeNejp27m0zELCAORMeYyyH3jxpcvw16FgKWUBoTYenI/G0YrsZ03WIrh/lj3kmIBA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Hu5oGGgP; 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="Hu5oGGgP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3B8961F000E9; Thu, 16 Jul 2026 14:26:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784211960; bh=+/dsYnjiJGIVwBL3CnIlDF/fLfDWkLNXsnZ06WZTgmM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Hu5oGGgPeaId5Ty576w2VLR2uuDKz68UYlDFjPrf43MAkOvl6Qz5mSHsbBLIEWCtP mafi42jNIHnnTDPdnlxmZsu70dzWJoXSiM4iLElMdxI4CwW3TNJNpln1vjVjv3OEgX J/F9UTA6mh4JdPevE5BhYqRQRLNBkkMFTuO4tnf4= 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 6.12 103/349] PCI: host-common: Request bus reassignment when not probe-only Date: Thu, 16 Jul 2026 15:30:37 +0200 Message-ID: <20260716133035.620048540@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260716133033.287196923@linuxfoundation.org> References: <20260716133033.287196923@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 6.12-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 @@ -73,6 +73,10 @@ int pci_host_common_probe(struct platfor 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->msi_domain = true;