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Commit 30e5a66d authored by Tapas Dey's avatar Tapas Dey Committed by Gerrit - the friendly Code Review server
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NFC: Fix NULL pointer dereference issue 



Modify code and add proper NULL check to avoid
NULL pointer dereference.

Change-Id: I09c6a74b653b12e60c48fc5f63cca9148e117ee9
Signed-off-by: default avatarTapas Dey <tdey@codeaurora.org>
parent 9f842b7a

drivers/nfc/qti/nfc_i2c_drv.c

+17 −3
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.

 */



#include "nfc_common.h"
@@ -452,7 +452,14 @@ int nfc_i2c_dev_suspend(struct device *device) 
{

	struct i2c_client *client = to_i2c_client(device);

	struct nfc_dev *nfc_dev = i2c_get_clientdata(client);

	struct i2c_dev *i2c_dev = &nfc_dev->i2c_dev;

	struct i2c_dev *i2c_dev = NULL;



	if (!nfc_dev) {

		pr_err("%s: device doesn't exist anymore\n", __func__);

		return -ENODEV;

	}



	i2c_dev = &nfc_dev->i2c_dev;



	NFCLOG_IPC(nfc_dev, false, "%s: irq_enabled = %d", __func__,

							i2c_dev->irq_enabled);
@@ -468,7 +475,14 @@ int nfc_i2c_dev_resume(struct device *device) 
{

	struct i2c_client *client = to_i2c_client(device);

	struct nfc_dev *nfc_dev = i2c_get_clientdata(client);

	struct i2c_dev *i2c_dev = &nfc_dev->i2c_dev;

	struct i2c_dev *i2c_dev = NULL;



	if (!nfc_dev) {

		pr_err("%s: device doesn't exist anymore\n", __func__);

		return -ENODEV;

	}



	i2c_dev = &nfc_dev->i2c_dev;



	NFCLOG_IPC(nfc_dev, false, "%s: irq_wake_up = %d", __func__,

							i2c_dev->irq_wake_up);