Re: [PATCH V2] ACPI/Battery: Add a _BIX quirk for NEC LZ750/LS

[Robert Hancock]

On 01/14/2014 03:37 PM, Rafael J. Wysocki wrote:
> On Tuesday, January 14, 2014 04:06:01 PM Matthew Garrett wrote:
> > On Mon, Jan 06, 2014 at 11:25:53PM +0100, Rafael J. Wysocki wrote:
> >
> > > Queued up as a fix for 3.13 (I fixed up the indentation).
> >
> > Ah, sorry, I missed this chunk of the thread. If the system provides
> > valid _BIF data then we should possibly just fall back to that rather
> > than adding another quirk table.
>
> The problem is to know that _BIX is broken.  If we could figure that out
> upfront, we woulnd't need the quirk table in any case.
>
> Tianyu, can we do some effort during the driver initialization to detect
> this breakage and handle it without blacklisting systems?

Yes, the usual question in such cases is "how does Windows manage to 
function on such systems, (almost certainly) without a system-specific 
hack, and can we replicate that behavior?"

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