linux-kernel - Re: [PATCH] Optional Beeping During Resume From Suspend To Ram.

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Date:	Sat, 30 Jun 2007 12:15:19 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Pavel Machek <pavel@....cz>
Cc:	Nigel Cunningham <nigel@...el.suspend2.net>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH] Optional Beeping During Resume From Suspend To Ram.

Hi,

On Saturday, 30 June 2007 00:35, Pavel Machek wrote:
> Hi!
> 
> > > >  ALIGN
> > > >  	.align	4096
> > > > @@ -31,6 +46,11 @@ wakeup_code:
> > > >  	movw	%cs, %ax
> > > >  	movw	%ax, %ds					# Make ds:0 point to wakeup_start
> > > >  	movw	%ax, %ss
> > > > +
> > > > +	testl   $1, beep_flags - wakeup_code
> > > > +	jz      1f
> > > > +	BEEP
> > > > +1:
> > > 
> > > Can we rename/reuse existing flag variable?
> > 
> > Sorry, but I can't resist the opportunity to say "Send a patch!" :)
> > 
> > Seriously, though, I'd prefer not to. If we rename that acpi video flags 
> > variable (I assume this is what you're thinking of), we only create cause for 
> > confusion. A variable should for debugging or for controlling quirks, not for 
> > both at the same time.
> 
> Cause for confusion? We are currently using 2 bits of that variable,
> and we want to add one more bit. I seriously doubt that can confuse
> anyone.

Well, indeed it would be more elegant to rename the existing flags variable
and use another bit out of it, but I personally don't think it's _that_
important.  At least, I don't think we should block the patch because of that.

BTW, has anyone confirmed that it works on i386?

BTW2, Nigel, please fix the formats in s2ram_beep_show()/_store(), they
cause gcc to spit ugly warnings on some architectures.

Greetings,
Rafael


-- 
"Premature optimization is the root of all evil." - Donald Knuth
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