Re: [PATCH] acpi: fan.c: printk replacement

[Rafael J. Wysocki]

On Tuesday, August 26, 2014 09:00:39 PM Sudip Mukherjee wrote:
> 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@xxxxxxxxxxxxxxx>
> > > ---
> > >  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().

Never mind, I was confused somehow, not exactly sure why.  Sorry about that.

> 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.

Well, that really depends on the particular case.  It really is better to use
dev_err() here, but then PREFIX with it is not really useful, so please just
drop PREFIX from the new messages.

Rafael

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