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Tue, 28 Mar 2023 11:50:05 -0500 Received: from xsjtanmays50.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Tue, 28 Mar 2023 11:50:04 -0500 From: Tanmay Shah To: , CC: , , Tanmay Shah , kernel test robot , "Tarak Reddy" Subject: [PATCH v3 2/2] remoteproc: enhance rproc_put() for clusters Date: Tue, 28 Mar 2023 09:49:24 -0700 Message-ID: <20230328164921.1895937-3-tanmay.shah@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230328164921.1895937-1-tanmay.shah@amd.com> References: <20230328164921.1895937-1-tanmay.shah@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT084:EE_|DM4PR12MB6448:EE_ X-MS-Office365-Filtering-Correlation-Id: c10aea3b-ff8d-4c3d-088b-08db2fac887d 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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(346002)(376002)(39860400002)(136003)(396003)(451199021)(36840700001)(40470700004)(46966006)(110136005)(966005)(478600001)(40480700001)(6666004)(54906003)(26005)(1076003)(316002)(8936002)(8676002)(70206006)(70586007)(40460700003)(41300700001)(81166007)(2616005)(82740400003)(4326008)(336012)(36860700001)(36756003)(186003)(82310400005)(2906002)(83380400001)(5660300002)(426003)(86362001)(47076005)(44832011)(356005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Mar 2023 16:50:27.2426 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c10aea3b-ff8d-4c3d-088b-08db2fac887d 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: CO1NAM11FT084.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6448 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org This patch enhances rproc_put() to support remoteproc clusters with multiple child nodes as in rproc_get_by_phandle(). Reported-by: kernel test robot Link: https://lore.kernel.org/oe-kbuild-all/202303221441.cuBnpvye-lkp@intel.com/ Signed-off-by: Tarak Reddy Signed-off-by: Tanmay Shah --- Changes in v3: - remove module_put call that was introduced in the patch by mistake - remove redundant check in rproc_put - Add inline comments in rproc_put that explains functionality Changes in v2: - Introduce this patch to fix rproc_put as per modified rproc_get_by_phandle drivers/remoteproc/remoteproc_core.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index a3e7c8798381..d8f28c6fe3a3 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -2559,7 +2559,22 @@ EXPORT_SYMBOL(rproc_free); */ void rproc_put(struct rproc *rproc) { - module_put(rproc->dev.parent->driver->owner); + struct platform_device *cluster_pdev; + + if (rproc->dev.parent->driver) { + module_put(rproc->dev.parent->driver->owner); + } else { + /* + * If the remoteproc's parent does not have a driver, + * driver is associated with the cluster. + */ + cluster_pdev = of_find_device_by_node(rproc->dev.parent->of_node->parent); + if (cluster_pdev) { + module_put(cluster_pdev->dev.driver->owner); + put_device(&cluster_pdev->dev); + } + } + put_device(&rproc->dev); } EXPORT_SYMBOL(rproc_put);