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[128.101.106.63]) by smtp.gmail.com with ESMTPSA id x84sm4827153ita.32.2019.03.08.20.54.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 08 Mar 2019 20:54:04 -0800 (PST) From: Kangjie Lu To: kjlu@umn.edu Subject: [PATCH] iio: adc: fix a potential NULL pointer dereference Date: Fri, 8 Mar 2019 22:53:55 -0600 Message-Id: <20190309045356.8892-1-kjlu@umn.edu> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190308_205408_758462_F94CCDBF X-CRM114-Status: GOOD ( 10.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, Lars-Peter Clausen , Pengutronix Kernel Team , linux-iio@vger.kernel.org, Fabio Estevam , Sascha Hauer , pakki001@umn.edu, linux-kernel@vger.kernel.org, NXP Linux Team , Peter Meerwald-Stadler , Hartmut Knaack , Shawn Guo , Jonathan Cameron MIME-Version: 1.0 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 devm_iio_trigger_alloc may fail and return NULL. The fix returns ENOMEM when it fails. Signed-off-by: Kangjie Lu --- drivers/iio/adc/mxs-lradc-adc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c index c627513d9f0f..5384472b6c4d 100644 --- a/drivers/iio/adc/mxs-lradc-adc.c +++ b/drivers/iio/adc/mxs-lradc-adc.c @@ -465,6 +465,8 @@ static int mxs_lradc_adc_trigger_init(struct iio_dev *iio) trig = devm_iio_trigger_alloc(&iio->dev, "%s-dev%i", iio->name, iio->id); + if (!trig) + return -ENOMEM; trig->dev.parent = adc->dev; iio_trigger_set_drvdata(trig, iio); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel