Re: [PATCH] Fixed all coding style issues for drivers/staging/media/lirc/

[Antti Palosaari]

On 10/02/2014 07:45 PM, Joe Perches wrote:
> On Thu, 2014-10-02 at 10:29 -0300, Mauro Carvalho Chehab wrote:
> > Em Wed, 01 Oct 2014 21:40:02 -0700 Amber Thrall <amber.rose.thrall@xxxxxxxxx> escreveu:
> > > Fixed various coding style issues, including strings over 80 characters long and many
> > > deprecated printk's have been replaced with proper methods.
> []
> > > diff --git a/drivers/staging/media/lirc/lirc_imon.c b/drivers/staging/media/lirc/lirc_imon.c
> []
> > > @@ -623,8 +623,8 @@ static void imon_incoming_packet(struct imon_context *context,
> > >   	if (debug) {
> > >   		dev_info(dev, "raw packet: ");
> > >   		for (i = 0; i < len; ++i)
> > > -			printk("%02x ", buf[i]);
> > > -		printk("\n");
> > > +			dev_info(dev, "%02x ", buf[i]);
> > > +		dev_info(dev, "\n");
> > >   	}
> >
> > This is wrong, as the second printk should be printk_cont.
> >
> > The best here would be to change all above to use %*ph.
> > So, just:
> >
> > 	dev_debug(dev, "raw packet: %*ph\n", len, buf);
>
> Not quite.
>
> %*ph is length limited and only useful for lengths < 30 or so.
> Even then, it's pretty ugly.
>
> print_hex_dump_debug() is generally better.

That is place where you print 8 debug bytes, which are received remote 
controller code. IMHO %*ph format is just what you like in that case.

Why print_hex_dump_debug() is better? IIRC it could not be even 
controlled like those dynamic debug printings.

regards
Antti

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