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helo=lists.xenproject.org; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C From: Stewart Hildebrand To: CC: Volodymyr Babchuk , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , "Volodymyr Babchuk" , Stewart Hildebrand Subject: [PATCH v13 04/14] vpci/header: rework exit path in init_header() Date: Fri, 2 Feb 2024 16:33:08 -0500 Message-ID: <20240202213321.1920347-5-stewart.hildebrand@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240202213321.1920347-1-stewart.hildebrand@amd.com> References: <20240202213321.1920347-1-stewart.hildebrand@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00001CE0:EE_|IA1PR12MB8538:EE_ X-MS-Office365-Filtering-Correlation-Id: a80af3f4-acae-4c13-479e-08dc2436c68b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Feb 2024 21:34:45.6368 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a80af3f4-acae-4c13-479e-08dc2436c68b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF00001CE0.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB8538 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1706909709566100001 From: Volodymyr Babchuk Introduce "fail" label in init_header() function to have the centralized error return path. This is the pre-requirement for the future changes in this function. This patch does not introduce functional changes. Suggested-by: Roger Pau Monn=C3=A9 Signed-off-by: Volodymyr Babchuk Acked-by: Roger Pau Monn=C3=A9 Signed-off-by: Stewart Hildebrand --- In v12: - s/init_bars/init_header/ - Re-order tags - Fixup scissors line In v11: - Do not remove empty line between "goto fail;" and "continue;" In v10: - Added Roger's A-b tag. In v9: - New in v9 --- xen/drivers/vpci/header.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/xen/drivers/vpci/header.c b/xen/drivers/vpci/header.c index 2f2d98ada012..803fe4bb99a6 100644 --- a/xen/drivers/vpci/header.c +++ b/xen/drivers/vpci/header.c @@ -656,10 +656,7 @@ static int cf_check init_header(struct pci_dev *pdev) rc =3D vpci_add_register(pdev->vpci, vpci_hw_read32, bar_write= , reg, 4, &bars[i]); if ( rc ) - { - pci_conf_write16(pdev->sbdf, PCI_COMMAND, cmd); - return rc; - } + goto fail; =20 continue; } @@ -679,10 +676,7 @@ static int cf_check init_header(struct pci_dev *pdev) rc =3D pci_size_mem_bar(pdev->sbdf, reg, &addr, &size, (i =3D=3D num_bars - 1) ? PCI_BAR_LAST : 0); if ( rc < 0 ) - { - pci_conf_write16(pdev->sbdf, PCI_COMMAND, cmd); - return rc; - } + goto fail; =20 if ( size =3D=3D 0 ) { @@ -697,10 +691,7 @@ static int cf_check init_header(struct pci_dev *pdev) rc =3D vpci_add_register(pdev->vpci, vpci_hw_read32, bar_write, re= g, 4, &bars[i]); if ( rc ) - { - pci_conf_write16(pdev->sbdf, PCI_COMMAND, cmd); - return rc; - } + goto fail; } =20 /* Check expansion ROM. */ @@ -722,6 +713,10 @@ static int cf_check init_header(struct pci_dev *pdev) } =20 return (cmd & PCI_COMMAND_MEMORY) ? modify_bars(pdev, cmd, false) : 0; + + fail: + pci_conf_write16(pdev->sbdf, PCI_COMMAND, cmd); + return rc; } REGISTER_VPCI_INIT(init_header, VPCI_PRIORITY_MIDDLE); =20 --=20 2.43.0