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Tue, 14 Sep 2021 01:28:31 -0700 Envelope-to: vkoul@kernel.org, romain.perier@gmail.com, allen.lkml@gmail.com, yukuai3@huawei.com, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, harinikatakamlinux@gmail.com Received: from [10.140.6.13] (port=35510 helo=xhdharinik40.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1mQ3nr-00094b-86; Tue, 14 Sep 2021 01:28:31 -0700 From: Harini Katakam To: , , , CC: , , , , , , , Subject: [PATCH 3/4] dmaengine: zynqmp_dma: Add conditions for return value check Date: Tue, 14 Sep 2021 13:58:16 +0530 Message-ID: <20210914082817.22311-4-harini.katakam@xilinx.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210914082817.22311-1-harini.katakam@xilinx.com> References: <20210914082817.22311-1-harini.katakam@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: cf5d2acf-b1d5-4eb5-c095-08d97759a3a7 X-MS-TrafficTypeDiagnostic: MWHPR0201MB3561: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:2089; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Sep 2021 08:28:33.0310 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cf5d2acf-b1d5-4eb5-c095-08d97759a3a7 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: SN1NAM02FT0059.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR0201MB3561 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shravya Kumbham Add condition to check the return value of dma_async_device_register and pm_runtime_get_sync functions. Addresses-Coverity: Event check_return. Signed-off-by: Shravya Kumbham Reviewed-by: Radhey Shyam Pandey --- drivers/dma/xilinx/zynqmp_dma.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c index d28b9ffb4309..588460e56ab8 100644 --- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -1080,7 +1080,11 @@ static int zynqmp_dma_probe(struct platform_device *pdev) pm_runtime_set_autosuspend_delay(zdev->dev, ZDMA_PM_TIMEOUT); pm_runtime_use_autosuspend(zdev->dev); pm_runtime_enable(zdev->dev); - pm_runtime_get_sync(zdev->dev); + ret = pm_runtime_get_sync(zdev->dev); + if (ret < 0) { + dev_err(zdev->dev, "pm_runtime_get_sync() failed\n"); + pm_runtime_disable(zdev->dev); + } if (!pm_runtime_enabled(zdev->dev)) { ret = zynqmp_dma_runtime_resume(zdev->dev); if (ret) @@ -1096,7 +1100,11 @@ static int zynqmp_dma_probe(struct platform_device *pdev) p->dst_addr_widths = BIT(zdev->chan->bus_width / 8); p->src_addr_widths = BIT(zdev->chan->bus_width / 8); - dma_async_device_register(&zdev->common); + ret = dma_async_device_register(&zdev->common); + if (ret) { + dev_err(zdev->dev, "failed to register the dma device\n"); + goto free_chan_resources; + } ret = of_dma_controller_register(pdev->dev.of_node, of_zynqmp_dma_xlate, zdev); -- 2.17.1