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Date:   Mon, 4 May 2020 18:58:08 -0700
From:   Guenter Roeck <linux@roeck-us.net>
To:     Michal Orzel <michalorzel.eng@gmail.com>
Cc:     jdelvare@suse.com, linux-hwmon@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix all coding-style warnings on lm75 driver
Message-ID: <20200505015808.GA139531@roeck-us.net>
References: <1588255534-28073-1-git-send-email-michalorzel.eng@gmail.com>
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On Thu, Apr 30, 2020 at 04:05:34PM +0200, Michal Orzel wrote:
> Check/fix all warnings generated by checkpatch.pl script on LM75 driver.
> 
> Signed-off-by: Michal Orzel <michalorzel.eng@gmail.com>

Applied, but for the future please prepend your patches with something like
"subsystem: driver:", or for hwmon "hwmon: (driver)".

Also, please keep in mind that such cleanups are not encouraged unless you
also provide functional changes.

Thanks,
Guenter

> ---
>  drivers/hwmon/lm75.c |  8 ++++++--
>  drivers/hwmon/lm75.h | 31 +++++++++++++++++--------------
>  2 files changed, 23 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
> index 5e63922..ba0be48 100644
> --- a/drivers/hwmon/lm75.c
> +++ b/drivers/hwmon/lm75.c
> @@ -797,8 +797,10 @@ static int lm75_detect(struct i2c_client *new_client,
>  
>  	/* First check for LM75A */
>  	if (i2c_smbus_read_byte_data(new_client, 7) == LM75A_ID) {
> -		/* LM75A returns 0xff on unused registers so
> -		   just to be sure we check for that too. */
> +		/*
> +		 * LM75A returns 0xff on unused registers so
> +		 * just to be sure we check for that too.
> +		 */
>  		if (i2c_smbus_read_byte_data(new_client, 4) != 0xff
>  		 || i2c_smbus_read_byte_data(new_client, 5) != 0xff
>  		 || i2c_smbus_read_byte_data(new_client, 6) != 0xff)
> @@ -849,6 +851,7 @@ static int lm75_suspend(struct device *dev)
>  {
>  	int status;
>  	struct i2c_client *client = to_i2c_client(dev);
> +
>  	status = i2c_smbus_read_byte_data(client, LM75_REG_CONF);
>  	if (status < 0) {
>  		dev_dbg(&client->dev, "Can't read config? %d\n", status);
> @@ -863,6 +866,7 @@ static int lm75_resume(struct device *dev)
>  {
>  	int status;
>  	struct i2c_client *client = to_i2c_client(dev);
> +
>  	status = i2c_smbus_read_byte_data(client, LM75_REG_CONF);
>  	if (status < 0) {
>  		dev_dbg(&client->dev, "Can't read config? %d\n", status);
> diff --git a/drivers/hwmon/lm75.h b/drivers/hwmon/lm75.h
> index b614e63..a398171 100644
> --- a/drivers/hwmon/lm75.h
> +++ b/drivers/hwmon/lm75.h
> @@ -1,17 +1,15 @@
>  /* SPDX-License-Identifier: GPL-2.0-or-later */
>  /*
> -    lm75.h - Part of lm_sensors, Linux kernel modules for hardware
> -	      monitoring
> -    Copyright (c) 2003 Mark M. Hoffman <mhoffman@lightlink.com>
> -
> -*/
> + * lm75.h - Part of lm_sensors, Linux kernel modules for hardware monitoring
> + * Copyright (c) 2003 Mark M. Hoffman <mhoffman@lightlink.com>
> + */
>  
>  /*
> -    This file contains common code for encoding/decoding LM75 type
> -    temperature readings, which are emulated by many of the chips
> -    we support.  As the user is unlikely to load more than one driver
> -    which contains this code, we don't worry about the wasted space.
> -*/
> + * This file contains common code for encoding/decoding LM75 type
> + * temperature readings, which are emulated by many of the chips
> + * we support.  As the user is unlikely to load more than one driver
> + * which contains this code, we don't worry about the wasted space.
> + */
>  
>  #include <linux/kernel.h>
>  
> @@ -20,18 +18,23 @@
>  #define LM75_TEMP_MAX 125000
>  #define LM75_SHUTDOWN 0x01
>  
> -/* TEMP: 0.001C/bit (-55C to +125C)
> -   REG: (0.5C/bit, two's complement) << 7 */
> +/*
> + * TEMP: 0.001C/bit (-55C to +125C)
> + * REG: (0.5C/bit, two's complement) << 7
> + */
>  static inline u16 LM75_TEMP_TO_REG(long temp)
>  {
>  	int ntemp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX);
> +
>  	ntemp += (ntemp < 0 ? -250 : 250);
>  	return (u16)((ntemp / 500) << 7);
>  }
>  
>  static inline int LM75_TEMP_FROM_REG(u16 reg)
>  {
> -	/* use integer division instead of equivalent right shift to
> -	   guarantee arithmetic shift and preserve the sign */
> +	/*
> +	 * use integer division instead of equivalent right shift to
> +	 * guarantee arithmetic shift and preserve the sign
> +	 */
>  	return ((s16)reg / 128) * 500;
>  }
> -- 
> 2.7.4
>