From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 401clv742mzF15q for ; Thu, 15 Mar 2018 03:35:39 +1100 (AEDT) Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w2EGXjbY120612 for ; Wed, 14 Mar 2018 12:35:37 -0400 Received: from e36.co.us.ibm.com (e36.co.us.ibm.com [32.97.110.154]) by mx0a-001b2d01.pphosted.com with ESMTP id 2gq5c6eggs-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Wed, 14 Mar 2018 12:35:37 -0400 Received: from localhost by e36.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 14 Mar 2018 10:35:36 -0600 From: "Desnes A. Nunes do Rosario" To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: bhelgaas@google.com, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, ruscur@russell.cc, aik@ozlabs.ru, david@gibson.dropbear.id.au, fbarrat@linux.vnet.ibm.com, brking@linux.vnet.ibm.com Subject: [PATCH 2/2, powerpc/powernv] powerpc/powernv: Tweak PCI_DEV_FLAGS_QUIET_PCI_REALIGN on/off during boot Date: Wed, 14 Mar 2018 13:34:55 -0300 In-Reply-To: <20180314163455.15854-1-desnesn@linux.vnet.ibm.com> References: <20180314163455.15854-1-desnesn@linux.vnet.ibm.com> Message-Id: <20180314163455.15854-3-desnesn@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Turn on PCI_DEV_FLAGS_QUIET_PCI_REALIGN flag on powernv's pci driver to silent PCI realignment messages through a early stage hook, and turn it off right before the pci device is enabled with a final stage hook. Fixes: 38274637699 ("powerpc/powernv: Override pcibios_default_alignment() to force PCI devices to be page aligned") Signed-off-by: Desnes A. Nunes do Rosario --- arch/powerpc/platforms/powernv/pci.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index 69d102cbf48f..d28ce0899487 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -1108,6 +1108,20 @@ static void pnv_p7ioc_rc_quirk(struct pci_dev *dev) } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IBM, 0x3b9, pnv_p7ioc_rc_quirk); +/* Fixup that disables PCI realignment menssages for all PCI devices */ +static void disable_realign_menssages(struct pci_dev *dev) +{ + dev->dev_flags |= PCI_DEV_FLAGS_QUIET_PCI_REALIGN; +} +DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, disable_realign_menssages); + +/* Fixup that enables PCI realignment messages for all PCI devices */ +static void enable_realign_menssages(struct pci_dev *dev) +{ + dev->dev_flags ^= PCI_DEV_FLAGS_QUIET_PCI_REALIGN; +} +DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, enable_realign_menssages); + void __init pnv_pci_init(void) { struct device_node *np; -- 2.14.3