linux-kernel - Re: [PATCH 01/12] thinkpad_ec: New driver for ThinkPad embedded controller access

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Date:	Mon, 7 Aug 2006 16:29:06 -0700
From:	Greg KH <gregkh@...e.de>
To:	Pavel Machek <pavel@...e.cz>
Cc:	Shem Multinymous <multinymous@...il.com>,
	Robert Love <rlove@...ve.org>,
	Jean Delvare <khali@...ux-fr.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, hdaps-devel@...ts.sourceforge.net
Subject: Re: [PATCH 01/12] thinkpad_ec: New driver for ThinkPad embedded controller access

On Tue, Aug 08, 2006 at 01:25:20AM +0200, Pavel Machek wrote:
> On Mon 2006-08-07 16:23:30, Greg KH wrote:
> > On Tue, Aug 08, 2006 at 01:15:57AM +0200, Pavel Machek wrote:
> > > Hi!
> > > 
> > > > Thanks for the sign-offs!
> > > 
> > > No problem.
> > > 
> > > > >> +module_param_named(debug, tp_debug, int, 0600);
> > > > >> +MODULE_PARM_DESC(debug, "Debug level (0=off, 1=on)");
> > > > >> +
> > > > >> +/* A few macros for printk()ing: */
> > > > >> +#define DPRINTK(fmt, args...) \
> > > > >> +  do { if (tp_debug) printk(KERN_DEBUG fmt, ## args); } while (0)
> > > > >
> > > > >Is not there generic function doing this?
> > > > 
> > > > None that I found. Many drivers do it this way.
> > > 
> > > linux/kernel.h : pr_debug() looks similar.
> > 
> > Use dev_dbg() and friends please instead of rolling your own.
> 
> Ahha, okay, dev_dbg() looks even better. (But we have pr_debug in
> linux/kernel.h; if it should not be used, comment would be nice).

Use pr_debug if you aren't doing driver things.  But if you have a
device, please don't use it.

I guess we could add a comment for it, as if anyone would notice it...

thanks,

greg k-h
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