From patchwork Mon Jan 4 08:35:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tamseel Shams X-Patchwork-Id: 11996465 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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 8946AC433E0 for ; Mon, 4 Jan 2021 09:56:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 553A821E92 for ; Mon, 4 Jan 2021 09:56:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726525AbhADJzx (ORCPT ); Mon, 4 Jan 2021 04:55:53 -0500 Received: from mailout4.samsung.com ([203.254.224.34]:12405 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726663AbhADJzw (ORCPT ); Mon, 4 Jan 2021 04:55:52 -0500 Received: from epcas5p1.samsung.com (unknown [182.195.41.39]) by mailout4.samsung.com (KnoxPortal) with ESMTP id 20210104095508epoutp0441f28f6dc698543b7e35176d9d2c7168~W-tVNd2FW0531405314epoutp04_ for ; Mon, 4 Jan 2021 09:55:08 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout4.samsung.com 20210104095508epoutp0441f28f6dc698543b7e35176d9d2c7168~W-tVNd2FW0531405314epoutp04_ DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1609754108; bh=J9y4WfkrJJpjdDAHbf5UjrzwkfiTUwuTADvbOK6+oas=; h=From:To:Cc:Subject:Date:References:From; b=LUVynedByR98TnZU7Mh2JGPOKv7Nqf5t578mmBRRh69XVM0HDRW7mOzQ74UcXEJ/k Nd7Wk2PncrjFp/XZzI2xMPQeeS+mZ5VfaDakg7QvDL/jvjbLQXbLn0tqB2FAg0ys3h HoI7lym8LeEd1WIIZWArUhRmMSSW5qEQxW559yFI= Received: from epsmges5p3new.samsung.com (unknown [182.195.42.75]) by epcas5p1.samsung.com (KnoxPortal) with ESMTP id 20210104095508epcas5p18200e5e0b1d3c613cec361ae54b61a0a~W-tUdg-oU0715207152epcas5p13; Mon, 4 Jan 2021 09:55:08 +0000 (GMT) Received: from epcas5p2.samsung.com ( [182.195.41.40]) by epsmges5p3new.samsung.com (Symantec Messaging Gateway) with SMTP id 5D.E9.33964.BF5E2FF5; Mon, 4 Jan 2021 18:55:07 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p1.samsung.com (KnoxPortal) with ESMTPA id 20210104082958epcas5p12c5c0e78dec7f106375b4f507a3b152b~W_i_JqgkC2401624016epcas5p1Y; Mon, 4 Jan 2021 08:29:58 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20210104082958epsmtrp2f321721ee08621439e49ac2f7a8d1b44~W_i_IzBcr3051030510epsmtrp2C; Mon, 4 Jan 2021 08:29:58 +0000 (GMT) X-AuditID: b6c32a4b-ea1ff700000184ac-c9-5ff2e5fbbb43 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id 69.1E.08745.602D2FF5; Mon, 4 Jan 2021 17:29:58 +0900 (KST) Received: from Jaguar.sa.corp.samsungelectronics.net (unknown [107.108.73.139]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20210104082957epsmtip268279f441c9d4d6603773add86ecaaa1~W_i8rxK870201302013epsmtip2m; Mon, 4 Jan 2021 08:29:57 +0000 (GMT) From: Tamseel Shams To: kgene@kernel.org, krzk@kernel.org, gregkh@linuxfoundation.org, jslaby@suse.com Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, alim.akhtar@samsung.com, Tamseel Shams Subject: [PATCH] serial: samsung: Checks the return value of function Date: Mon, 4 Jan 2021 14:05:51 +0530 Message-Id: <20210104083551.1393-1-m.shams@samsung.com> X-Mailer: git-send-email 2.17.1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrBIsWRmVeSWpSXmKPExsWy7bCmhu7vp5/iDe6stLZ4MG8bm0Xz4vVs FlM2fGCy6H/8mtni/PkN7BabHl9jtbi8aw6bxYzz+5gszizuZbe427qY3YHLY9OqTjaP/XPX sHtsXlLv0bdlFaPH+i1XWTw+b5ILYIvisklJzcksSy3St0vgypiy/AhbwSf2io6nB1kbGC+z dTFyckgImEjs/TyRvYuRi0NIYDejRPeEWcwQzidGiQ+bN7BCOJ8ZJfZPnM/UxcgB1jL3Si1E fBejxPWdqxghnBYmiUV/TrCDFLEJaEocP88NskJEIETi3dktYDXMAicZJfZubmABqREWcJX4 MIEXpIZFQFVi//6L7CA2r4C5xP1ti9khzpOXWL3hADOEfY5douOfNYTtIvH8xGsWCFtY4tXx LVD1UhKf3+2Fei1fYv68VVC9FRIrL7yBsu0lDlyZA3YCM9CZ63fpQ4RlJaaeWscEYjML8En0 /n7CBBHnldgxD8ZWlPi/ux9qlbjEuxVTWCFB4iHxbloxSFhIIFbi9Y5FzBMYZWchLFjAyLiK UTK1oDg3PbXYtMA4L7Vcrzgxt7g0L10vOT93EyM4MWh572B89OCD3iFGJg7GQ4wSHMxKIrwV Fz7EC/GmJFZWpRblxxeV5qQWH2KU5mBREufdYfAgXkggPbEkNTs1tSC1CCbLxMEp1cCkzOqn 8fZ7A7/nIu7Y97+/fDW3nj9N977PlJdfLsrM0Io4YS0t3vxpN//X6428kw/1sh/ZELX0vvDe +cre7A89FqYv/njz5qej06auvv0j4NcSKal+7ufvxZhOzr8ncTRWePeami2vV7od2yOUUa58 X6N21ZIWo91yXAZzF1d6f0iu27aiwzJVOiv3xGzLj6zNN2Y853r2r3B+5w6j7v92YY8/n2+x Y7pe87Eg/uKt6ZcsWd74/zJ9otC9b+7e1Y4ZrnNfiK3jCDjw947ii/eh/T/apPUUmWdacBy0 SmMVzZ3FIjHNZ9uPU3b1gVNefGlUfRrixxR6QNTc4uCKkBucbBp9C04Wz5MwuB0axBXErcRS nJFoqMVcVJwIAGBY5FF7AwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupnluLIzCtJLcpLzFFi42LZdlhJXpft0qd4gxWfDS0ezNvGZtG8eD2b xZQNH5gs+h+/ZrY4f34Du8Wmx9dYLS7vmsNmMeP8PiaLM4t72S3uti5md+Dy2LSqk81j/9w1 7B6bl9R79G1ZxeixfstVFo/Pm+QC2KK4bFJSczLLUov07RK4MqYsP8JW8Im9ouPpQdYGxsts XYwcHBICJhJzr9R2MXJxCAnsYJRY2HWFvYuREyguLjHt135GCFtYYuW/5+wQRU1MEgeXLmUG aWYT0JQ4fp4bxBQRiJCY+bEGpIRZ4DyjxM7jq5lA4sICrhIfJvCCjGERUJXYv/8i2HheAXOJ +9sWQ62Sl1i94QDzBEaeBYwMqxglUwuKc9Nziw0LjPJSy/WKE3OLS/PS9ZLzczcxgsNMS2sH 455VH/QOMTJxMB5ilOBgVhLhrbjwIV6INyWxsiq1KD++qDQntfgQozQHi5I474Wuk/FCAumJ JanZqakFqUUwWSYOTqkGpnarPxMyMjutl++am7VxzmoBgRW1ZRxFl5cuNnyzzKJwTTNH3c8Z PZpr+P7eeHuXoXGJzBOZv0k5s/fVdrEfe+t6z+fKs27uTfsEJZt2+Spl88f2etpfcH+0sGnx 4R39i9e0Ca7Ycnw3z/PsRfozQzq6VDes+Otz69KM7+zBO0Nfxx04tmiPk/FKDZ6/vwyPd79a bVtuvNs4aZP1DB/1OXe3ck/7a8D5f0bk023OV14cSb/8yk0wYt7HJO/4u42HFu5mnrYqwWgH 53LxQttt/+KdDfvM7m0XUgsrNm42aw0N2e8dKpkzeVukgeGu6Ox2mey7332N96+bn/vkxt3P BpsrJz/MkY5+YzTvLMOGuzeUWIozEg21mIuKEwFIILV/ogIAAA== X-CMS-MailID: 20210104082958epcas5p12c5c0e78dec7f106375b4f507a3b152b X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P X-CMS-RootMailID: 20210104082958epcas5p12c5c0e78dec7f106375b4f507a3b152b References: Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org "uart_add_one_port" function call may fail and return some error code, so adding a check for return value. If it is returning some error code, then displaying the result and returning back from there. Signed-off-by: Tamseel Shams --- drivers/tty/serial/samsung_tty.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index 6ef614d8648c..a220ba166ffe 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -2072,7 +2072,11 @@ static int s3c24xx_serial_probe(struct platform_device *pdev) } dev_dbg(&pdev->dev, "%s: adding port\n", __func__); - uart_add_one_port(&s3c24xx_uart_drv, &ourport->port); + ret = uart_add_one_port(&s3c24xx_uart_drv, &ourport->port); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to add uart port, err %d\n", ret); + return ret; + } platform_set_drvdata(pdev, &ourport->port); /*