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Date: Mon, 2 Feb 2009 17:32:25 -0800 (PST) From: Linus Torvalds <torvalds@...ux-foundation.org> To: Benjamin Herrenschmidt <benh@...nel.crashing.org> cc: "Rafael J. Wysocki" <rjw@...k.pl>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Jesse Barnes <jesse.barnes@...el.com>, Andreas Schwab <schwab@...e.de>, Len Brown <lenb@...nel.org>, Ingo Molnar <mingo@...e.hu> Subject: Re: PCI PM: Restore standard config registers of all devices early On Tue, 3 Feb 2009, Benjamin Herrenschmidt wrote: > > Anyway, my proposed radeonfb patch is at: > > http://bugzilla.kernel.org/attachment.cgi?id=20085 > > I'll look at cleaning up atyfb and aty128fb later today if needed. Ok. Note how the PCI layer (currently) only saves the low _16_ dwords of config space (64 bytes). The radeonfb code that did it by hand saved the whole 64 dwords (256 bytes). It _probably_ doesn't matter, but.. The reason the PCI layer only does 64 bytes is that that was the really old PCI config space model - the rest was undefined and apparently a few cards reportedly even crashed when accessing it (but who knows, that may be urban folklore). But if that patch works for you, it's clearly already better than _not_ applying the patch, so.. Linus -- 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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