From patchwork Fri Jan 15 12:28:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 364588 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 456CBC433E6 for ; Fri, 15 Jan 2021 12:50:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0428A2184D for ; Fri, 15 Jan 2021 12:50:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387844AbhAOMgK (ORCPT ); Fri, 15 Jan 2021 07:36:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:42974 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387838AbhAOMgJ (ORCPT ); Fri, 15 Jan 2021 07:36:09 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 84588224F9; Fri, 15 Jan 2021 12:35:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1610714154; bh=d/iWsEUdnlQTdGh+bo7yZVe5IG3Yg4H7fcE/Trb2zaI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yonjiQi2Rhoid3Utf7zxnFxNzSKDqYmnBLg485vXT8nd+rYvG5lKq91D8sowmO97q cZ9aIkj0FFzmhJzyvgxidMju9e1UvITP7GLbomeocCk0qR4dARCme++JJobrgXk2Fm f7sszm2mI+TlKcm50UNQ2joTdIDzRD7ZC9CjvnqA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Shravya Kumbham , Radhey Shyam Pandey , Vinod Koul Subject: [PATCH 5.4 44/62] dmaengine: xilinx_dma: check dma_async_device_register return value Date: Fri, 15 Jan 2021 13:28:06 +0100 Message-Id: <20210115122000.529002889@linuxfoundation.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115121958.391610178@linuxfoundation.org> References: <20210115121958.391610178@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Shravya Kumbham commit 99974aedbd73523969afb09f33c6e3047cd0ddae upstream. dma_async_device_register() can return non-zero error code. Add condition to check the return value of dma_async_device_register function and handle the error path. Addresses-Coverity: Event check_return. Fixes: 9cd4360de609 ("dma: Add Xilinx AXI Video Direct Memory Access Engine driver support") Signed-off-by: Shravya Kumbham Signed-off-by: Radhey Shyam Pandey Link: https://lore.kernel.org/r/1608722462-29519-2-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman --- drivers/dma/xilinx/xilinx_dma.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -2742,7 +2742,11 @@ static int xilinx_dma_probe(struct platf } /* Register the DMA engine with the core */ - dma_async_device_register(&xdev->common); + err = dma_async_device_register(&xdev->common); + if (err) { + dev_err(xdev->dev, "failed to register the dma device\n"); + goto error; + } err = of_dma_controller_register(node, of_dma_xilinx_xlate, xdev);