From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752536AbeCNQfk (ORCPT ); Wed, 14 Mar 2018 12:35:40 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:52572 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752482AbeCNQfh (ORCPT ); Wed, 14 Mar 2018 12:35:37 -0400 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 X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180314163455.15854-1-desnesn@linux.vnet.ibm.com> References: <20180314163455.15854-1-desnesn@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18031416-0020-0000-0000-00000D972FBD X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008673; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.01002988; UDB=6.00510401; IPR=6.00782318; MB=3.00020033; MTD=3.00000008; XFM=3.00000015; UTC=2018-03-14 16:35:35 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18031416-0021-0000-0000-0000607E46D6 Message-Id: <20180314163455.15854-3-desnesn@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-03-14_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1803140187 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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