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Date: Thu, 3 Jun 2010 09:45:46 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Adam Lackorzynski <adam@...inf.tu-dresden.de> Cc: Jacob Pan <jacob.jun.pan@...el.com>, "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH] x86, i8259: Only register sysdev for real PIC On Thu, 3 Jun 2010 11:01:41 +0200 Adam Lackorzynski <adam@...inf.tu-dresden.de> wrote: > > On Wed Jun 02, 2010 at 18:18:14 -0700, Andrew Morton wrote: > > On Wed, 2 Jun 2010 13:31:50 +0200 Adam Lackorzynski <adam@...inf.tu-dresden.de> wrote: > > > > > Do not register the sysdev function when the null_legacy_pic is used so > > > that the i8259 resume, suspend and shutdown functions are not called. > > > > What are the effects of this change? Does it fix an oops or a hang, or > > nothing at all, or...? > > My platform makes use of the null_legacy_pic choice and oopses when > doing a shutdown as the shutdown code goes through all the registered > sysdevs and calls their shutdown method which in my case poke on a > non-existing i8259. Imho the i8259 specific sysdev should only be > registered if the i8259 is actually there. OK, thanks. Important info, that. I'd say that makes it something we should fix in 2.6.34.x and perhaps earlier. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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