linux-kernel - Re: [PATCH] acpi: fan.c: printk replacement

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Date:	Tue, 26 Aug 2014 21:00:39 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Zhang Rui <rui.zhang@...el.com>, Len Brown <lenb@...nel.org>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] acpi: fan.c: printk replacement

On Tue, Aug 26, 2014 at 12:45:20AM +0200, Rafael J. Wysocki wrote:
> On Friday, August 22, 2014 05:33:21 PM Sudip Mukherjee wrote:
> > printk replaced with corresponding dev_err and dev_info
> > fixed one broken user-visible string
> > multiine comment edited for correct commenting style
> > asm/uaccess.h replaced with linux/uaccess.h
> > 
> > Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
> > ---
> >  drivers/acpi/fan.c | 18 +++++++++---------
> >  1 file changed, 9 insertions(+), 9 deletions(-)
> > 
> > diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
> > index 8acf53e..7900d55 100644
> > --- a/drivers/acpi/fan.c
> > +++ b/drivers/acpi/fan.c
> > @@ -27,7 +27,7 @@
> >  #include <linux/module.h>
> >  #include <linux/init.h>
> >  #include <linux/types.h>
> > -#include <asm/uaccess.h>
> > +#include <linux/uaccess.h>
> >  #include <linux/thermal.h>
> >  #include <linux/acpi.h>
> >  
> > @@ -127,8 +127,9 @@ static const struct thermal_cooling_device_ops fan_cooling_ops = {
> >  };
> >  
> >  /* --------------------------------------------------------------------------
> > -                                 Driver Interface
> > -   -------------------------------------------------------------------------- */
> > + *                               Driver Interface
> > + * --------------------------------------------------------------------------
> > +*/
> >  
> >  static int acpi_fan_add(struct acpi_device *device)
> >  {
> > @@ -143,7 +144,7 @@ static int acpi_fan_add(struct acpi_device *device)
> >  
> >  	result = acpi_bus_update_power(device->handle, NULL);
> >  	if (result) {
> > -		printk(KERN_ERR PREFIX "Setting initial power state\n");
> > +		dev_err(&device->dev, PREFIX "Setting initial power state\n");
> 
> While at it, please define a proper pr_fmt() for this file and get rid of PREFIX
> too.
> 
> Otherwise I don't see a compelling reason to apply this.
> 

Hi,
Since in the patch I am not using any pr_* , so I am unable to understand why you are asking for a proper pr_fmt().
I can get rid of the PREFIX . Then should I use pr_* in the patch instead of dev_* ? 
My understanding was dev_* is more preffered than pr_*.
waiting for your suggestion on this.

thanks
sudip


> > 
> 
> -- 
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.
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