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Open Source and information security mailing list archives
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Date: Mon, 18 Mar 2013 12:48:41 +0000 From: Chris Wilson <chris@...is-wilson.co.uk> To: Jiri Kosina <jkosina@...e.cz> Cc: linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org, Shawn Starr <shawn.starr@...ers.com>, Daniel Vetter <daniel.vetter@...ll.ch> Subject: Re: [PATCH] drm/i915: Flush writes to GMBUS registers On Mon, Mar 18, 2013 at 12:51:45PM +0100, Jiri Kosina wrote: > On Mon, 18 Mar 2013, Chris Wilson wrote: > > > If we do not complete the writes to the GMBUS registers, they remain > > active for an indefinite period of time afterwards, even causing > > spurious interrupts on gm45. > > > > Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk> > > Link: http://lkml.kernel.org/r/alpine.LNX.2.00.1303151424140.9529@pobox.suse.cz > > Cc: Shawn Starr <shawn.starr@...ers.com> > > Cc: Jiri Kosina <jkosina@...e.cz> > > Cc: Daniel Vetter <daniel.vetter@...ll.ch> > > Unfortunately I can't provide my Tested-by or Acked-by for this, as I am > still seeing the "nobody cared" for irq 16 with this patch applied. The message reappeared on the third reboot. Perhaps an indicator that it is a timing issue. I guess the sensible approach then is to exclude gen4 from the whitelist for gmbus irqs. -Chris -- Chris Wilson, Intel Open Source Technology Centre -- 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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