Merge "iio: adc: Fix buffer overflow in adc_configure"

/*

 * Copyright (c) 2018, The Linux Foundation. All rights reserved.

 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

	return adc_write(adc, ADC_USR_CONV_REQ, &data, 1);

}

#define ADC5_MULTI_TRANSFER	5

static int adc_configure(struct adc_chip *adc,

			struct adc_channel_prop *prop)

{

	int ret;

	u8 buf[5];

	u8 buf[ADC5_MULTI_TRANSFER];

	u8 conv_req = 0;

	bool channel_check = false;

			channel_check = true;

	/* Read registers 0x42 through 0x46 */

	ret = adc_read(adc, ADC_USR_DIG_PARAM, buf, 6);

	ret = adc_read(adc, ADC_USR_DIG_PARAM, buf, ADC5_MULTI_TRANSFER);

	if (ret < 0)

		return ret;

	if (!adc->poll_eoc)

		reinit_completion(&adc->complete);

	ret = adc_write(adc, ADC_USR_DIG_PARAM, buf, 5);

	ret = adc_write(adc, ADC_USR_DIG_PARAM, buf, ADC5_MULTI_TRANSFER);

	if (ret)

		return ret;