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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 Cc: pakki001@umn.edu, Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org 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 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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);