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Wed, 20 May 2020 12:08:11 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04KC3AJ6104590; Wed, 20 May 2020 12:08:11 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3020.oracle.com with ESMTP id 31502063tv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 20 May 2020 12:08:11 +0000 Received: from abhmp0003.oracle.com (abhmp0003.oracle.com [141.146.116.9]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 04KC8AEi017587; Wed, 20 May 2020 12:08:10 GMT Received: from mwanda (/41.57.98.10) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 20 May 2020 05:08:09 -0700 Date: Wed, 20 May 2020 15:08:04 +0300 From: Dan Carpenter To: Linus Walleij Subject: [PATCH] bus: arm-integrator-lm: Fix an IS_ERR() vs NULL check Message-ID: <20200520120804.GI172354@mwanda> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9626 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 bulkscore=0 suspectscore=0 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005200105 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9626 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 lowpriorityscore=0 spamscore=0 mlxlogscore=999 clxscore=1015 priorityscore=1501 cotscore=-2147483648 impostorscore=0 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005200106 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200520_050814_478558_E0A6F428 X-CRM114-Status: GOOD ( 17.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org The of_find_matching_node() function returns NULL on error, it never returns error pointers. This doesn't really impact runtime very much because if "syscon" is NULL then syscon_node_to_regmap() will return -EINVAL. The only runtime difference is that now it returns -ENODEV. Fixes: ccea5e8a5918 ("bus: Add driver for Integrator/AP logic modules") Signed-off-by: Dan Carpenter --- The first patch which added this file doesn't give a good hint what the subsystem prefix should be so I just guessed "bus: arm-integrator-lm:". drivers/bus/arm-integrator-lm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/bus/arm-integrator-lm.c b/drivers/bus/arm-integrator-lm.c index 669ea7e1f92e..845b6c43fef8 100644 --- a/drivers/bus/arm-integrator-lm.c +++ b/drivers/bus/arm-integrator-lm.c @@ -78,10 +78,10 @@ static int integrator_ap_lm_probe(struct platform_device *pdev) /* Look up the system controller */ syscon = of_find_matching_node(NULL, integrator_ap_syscon_match); - if (IS_ERR(syscon)) { + if (!syscon) { dev_err(dev, "could not find Integrator/AP system controller\n"); - return PTR_ERR(syscon); + return -ENODEV; } map = syscon_node_to_regmap(syscon); if (IS_ERR(map)) { -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel