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Date:   Fri, 13 May 2022 03:30:49 +0300
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Subject: Re: [PATCH v4 3/3] iio: light: Add support for ltrf216a sensor
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To:     Shreeya Patel <shreeya.patel@collabora.com>, jic23@kernel.org,
        lars@metafoo.de, robh+dt@kernel.org, Zhigang.Shi@liteon.com,
        krisman@collabora.com
Cc:     linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, kernel@collabora.com,
        alvaro.soliverez@collabora.com
References: <20220511094024.175994-1-shreeya.patel@collabora.com>
 <20220511094024.175994-4-shreeya.patel@collabora.com>
From:   Dmitry Osipenko <digetx@gmail.com>
In-Reply-To: <20220511094024.175994-4-shreeya.patel@collabora.com>
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11.05.2022 12:40, Shreeya Patel пишет:
> +static int ltrf216a_set_int_time(struct ltrf216a_data *data, int itime)
> +{
> +	int i, ret, index = -1;
> +	u8 reg_val;
> +
> +	for (i = 0; i < ARRAY_SIZE(ltrf216a_int_time_available); i++) {
> +		if (ltrf216a_int_time_available[i][1] == itime) {
> +			index = i;
> +			break;
> +		}
> +	}
> +
> +	if (index < 0)
> +		return -EINVAL;
> +
> +	reg_val = ltrf216a_int_time_reg[index][1];
> +	data->int_time_fac = ltrf216a_int_time_reg[index][0];
> +
> +	ret = i2c_smbus_write_byte_data(data->client, LTRF216A_ALS_MEAS_RES, reg_val);
> +	if (ret < 0)
> +		return ret;

Should the data->int_time_fac be updated only if I2C write was successful?

I'm not sure what reading of LTRF216A_CLEAR_DATA reg does, but if it
clears the measured data, then shouldn't the data be cleared after
changing the config?

> +	data->int_time = itime;
> +
> +	return 0;
> +}