Yes, this comes up every now and then.

"iff" means "if and only if" by convention.


> -----Original Message-----
> From: Rafael J. Wysocki [mailto:rjw@rjwysocki.net]
> Sent: Monday, April 13, 2015 6:38 AM
> To: Zhaogang Gong
> Cc: Moore, Robert; Zheng, Lv; Wysocki, Rafael J; lenb@kernel.org; linux-
> acpi@vger.kernel.org; linux-kernel@vger.kernel.org; yanxiaofeng@inspur.com
> Subject: Re: [PATCH] acpica: modify a commit error in file
> drivers/acpi/acpica/nsxfeval.c
> 
> On Monday, April 13, 2015 05:05:07 PM Zhaogang Gong wrote:
> > Change "iff" in function acpi_evaluate_object() to "if".
> >
> > Signed-off-by: Zhaogang Gong <gongzhaogang@inspur.com>
> > ---
> >  drivers/acpi/acpica/nsxfeval.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/acpi/acpica/nsxfeval.c
> > b/drivers/acpi/acpica/nsxfeval.c index b6030a2..9571429 100644
> > --- a/drivers/acpi/acpica/nsxfeval.c
> > +++ b/drivers/acpi/acpica/nsxfeval.c
> > @@ -214,7 +214,7 @@ acpi_evaluate_object(acpi_handle handle,
> >  		info->prefix_node = NULL;
> >  	} else if (!handle) {
> >  		/*
> > -		 * A handle is optional iff a fully qualified pathname is
> specified.
> > +		 * A handle is optional if a fully qualified pathname is
> specified.
> 
> This is not a mistake.
> 
> >  		 * Since we've already handled fully qualified names above,
> this is
> >  		 * an error.
> >  		 */
> >
> 
> --
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.