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Thu, 24 Feb 2022 23:15:22 -0800 From: Henry Lin To: CC: Henry Lin , Mathias Nyman , , Subject: [PATCH v2] xhci: fix runtime PM imbalance in USB2 resume Date: Fri, 25 Feb 2022 15:15:06 +0800 Message-ID: <20220225071506.22012-1-henryl@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220225055311.92447-1-henryl@nvidia.com> References: <20220225055311.92447-1-henryl@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4670e78c-b8e2-4b81-48d5-08d9f82e9888 X-MS-TrafficTypeDiagnostic: BY5PR12MB3970:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.235;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230001)(4636009)(36840700001)(40470700004)(46966006)(2906002)(47076005)(508600001)(6666004)(7696005)(83380400001)(316002)(6916009)(5660300002)(36860700001)(54906003)(36756003)(4744005)(8936002)(8676002)(82310400004)(4326008)(2616005)(26005)(186003)(336012)(426003)(1076003)(70206006)(70586007)(86362001)(81166007)(40460700003)(356005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Feb 2022 07:15:25.9794 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4670e78c-b8e2-4b81-48d5-08d9f82e9888 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.235];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT024.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB3970 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org USB2 resume starts with usb_hcd_start_port_resume() in port status change handling for RESUME link state. usb_hcd_end_port_resume() call is needed to keep runtime PM balance. Fixes: a231ec41e6f6 ("xhci: refactor U0 link state handling in get_port_status") Signed-off-by: Henry Lin --- drivers/usb/host/xhci-hub.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index df3522dab31b..4a8b07b8ee01 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -1090,6 +1090,8 @@ static void xhci_get_usb2_port_status(struct xhci_port *port, u32 *status, if (link_state == XDEV_U0) { bus_state->resume_done[portnum] = 0; clear_bit(portnum, &bus_state->resuming_ports); + usb_hcd_end_port_resume(&port->rhub->hcd->self, + portnum); if (bus_state->suspended_ports & (1 << portnum)) { bus_state->suspended_ports &= ~(1 << portnum); bus_state->port_c_suspend |= 1 << portnum; -- 2.17.1