linux-kernel - Re: [PATCH 2/2] tc1100-wmi - Fail gracefully if ACPI is disabled

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Date:	Thu, 14 Feb 2008 01:15:25 -0500
From:	Len Brown <lenb@...nel.org>
To:	Carlos Corbacho <carlos@...angeworlds.co.uk>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pm@...ts.linux-foundation.org
Subject: Re: [PATCH 2/2]  tc1100-wmi - Fail gracefully if ACPI is disabled

never mind -- linus fixed this in a more elegant way.

-len

On Thursday 14 February 2008 01:11, Len Brown wrote:
> applied.
> 
> thanks,
> -len
> 
> On Monday 11 February 2008 14:55, Carlos Corbacho wrote:
> > tc1100-wmi - Fail gracefully if ACPI is disabled
> > 
> > From: Carlos Corbacho <carlos@...angeworlds.co.uk>
> > 
> > WMI drivers, like their ACPI counterparts, should also check if ACPI is
> > disabled or not, and bail out if so, otherwise we cause a crash.
> > 
> > Spotted by Ingo Molnar.
> > 
> > Signed-off-by: Carlos Corbacho <carlos@...angeworlds.co.uk>
> > CC: Ingo Molnar <mingo@...e.hu>
> > CC: Linus Torvalds <torvalds@...ux-foundation.org>
> > CC: Andrew Morton <akpm@...ux-foundation.org>
> > CC: Len Brown <lenb@...nel.org>
> > ---
> > 
> >  drivers/misc/tc1100-wmi.c |    3 +++
> >  1 files changed, 3 insertions(+), 0 deletions(-)
> > 
> > 
> > diff --git a/drivers/misc/tc1100-wmi.c b/drivers/misc/tc1100-wmi.c
> > index f25e4c9..cb8f79f 100644
> > --- a/drivers/misc/tc1100-wmi.c
> > +++ b/drivers/misc/tc1100-wmi.c
> > @@ -263,6 +263,9 @@ static int __init tc1100_init(void)
> >  {
> >  	int result = 0;
> >  
> > +	if (acpi_disabled)
> > +		return -ENODEV;
> > +
> >  	if (!wmi_has_guid(GUID))
> >  		return -ENODEV;
> >  
> > 
> 
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