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Wed, 30 Sep 2020 09:02:56 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 08U90U9o080916; Wed, 30 Sep 2020 09:02:56 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3020.oracle.com with ESMTP id 33tfhytbm6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 30 Sep 2020 09:02:56 +0000 Received: from abhmp0017.oracle.com (abhmp0017.oracle.com [141.146.116.23]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 08U92kTR009794; Wed, 30 Sep 2020 09:02:47 GMT Received: from mwanda (/41.57.98.10) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 30 Sep 2020 02:02:45 -0700 Date: Wed, 30 Sep 2020 12:02:38 +0300 From: Dan Carpenter To: Nicolas Saenz Julienne Subject: [PATCH] staging: vchiq: silence an uninitialized variable warning Message-ID: <20200930090238.GA621698@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=9759 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxlogscore=999 bulkscore=0 phishscore=0 malwarescore=0 adultscore=0 suspectscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009300072 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9759 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 suspectscore=0 phishscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 spamscore=0 impostorscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009300072 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200930_050310_394280_2D26D613 X-CRM114-Status: GOOD ( 21.87 ) 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: devel@driverdev.osuosl.org, Arnd Bergmann , Greg Kroah-Hartman , Marcelo Diop-Gonzalez , kernel-janitors@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Jamal Shareef , 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+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Smatch complains that "userdata" can be passed to vchiq_bulk_transfer() without being initialized. Smatch is correct, however, in that situation the "userdata" is not used so it doesn't cause a problem. Passing an uninitialized variable will trigger a UBSan warning at runtime so this warning is worth silencing by setting "userdata" to NULL. Fixes: a4367cd2b231 ("staging: vchiq: convert compat bulk transfer") Signed-off-by: Dan Carpenter --- drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c index 590415561b73..71b962777da5 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c @@ -952,7 +952,7 @@ static int vchiq_irq_queue_bulk_tx_rx(struct vchiq_instance *instance, { struct vchiq_service *service; struct bulk_waiter_node *waiter = NULL; - void *userdata; + void *userdata = NULL; int status = 0; int ret; -- 2.28.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel