linux-kernel - Re: [PATCH 4/4] Input: mms114

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Message-ID: <20180124200408.GB705@gmail.com>
Date:   Wed, 24 Jan 2018 21:04:08 +0100
From:   Marcus Folkesson <marcus.folkesson@...il.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Simon Shields <simon@...eageos.org>,
        Andi Shyti <andi.shyti@...sung.com>,
        Rob Herring <robh@...nel.org>, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] Input: mms114 - add support for mms152

Hello Dmitry,

On Wed, Jan 24, 2018 at 11:38:04AM -0800, Dmitry Torokhov wrote:
> From: Simon Shields <simon@...eageos.org>
> 
> @@ -241,12 +251,28 @@ static int mms114_get_version(struct mms114_data *data)
>  	u8 buf[6];
>  	int error;
>  
> -	error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
> -	if (error < 0)
> -		return error;
> +	switch (data->type) {
> +	case TYPE_MMS152:
> +		error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
> +		if (error)
> +			return error;
> +		buf[3] = i2c_smbus_read_byte_data(data->client,
> +						  MMS152_COMPAT_GROUP);
> +		if (buf[3] < 0)
> +			return buf[3];

buf is unsigned.

Maybe
		error = i2c_smbus_read_byte_data(data->client,
						  MMS152_COMPAT_GROUP);
		if (error < 0)
			return error;
Instead?


> +		dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x, Compat group: %c\n",
> +			 buf[0], buf[1], buf[2], buf[3]);
> +		break;
> +
> +	case TYPE_MMS114:
> +		error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
> +		if (error)
> +			return error;
>  
> -	dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n",
> -		 buf[0], buf[1], buf[3]);
> +		dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n",
> +			 buf[0], buf[1], buf[3]);
> +		break;
> +	}
>  
>  	return 0;
>  }


Best regards
Marcus Folkesson

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