From: Chris Wilson <chris@chris-wilson.co.uk>
To: Jiri Kosina <jkosina@suse.cz>
Cc: linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org,
Shawn Starr <shawn.starr@rogers.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>
Subject: Re: [PATCH] drm/i915: Flush writes to GMBUS registers
Date: Mon, 18 Mar 2013 12:48:41 +0000 [thread overview]
Message-ID: <20130318124841.GA3995@cantiga.alporthouse.com> (raw)
In-Reply-To: <alpine.LNX.2.00.1303181251040.9529@pobox.suse.cz>
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@chris-wilson.co.uk>
> > Link: http://lkml.kernel.org/r/alpine.LNX.2.00.1303151424140.9529@pobox.suse.cz
> > Cc: Shawn Starr <shawn.starr@rogers.com>
> > Cc: Jiri Kosina <jkosina@suse.cz>
> > Cc: Daniel Vetter <daniel.vetter@ffwll.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
next prev parent reply other threads:[~2013-03-18 12:49 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-08 19:12 [3.9-rc1] very poor interrupt responses Shawn Starr
2013-03-08 21:33 ` [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses) Peter Hurley
2013-03-09 2:19 ` Alan Stern
2013-03-09 8:53 ` Thomas Meyer
2013-03-09 13:07 ` Peter Hurley
2013-03-13 21:35 ` Jiri Kosina
2013-03-14 14:51 ` Alan Stern
2013-03-14 14:56 ` Jiri Kosina
2013-03-14 15:18 ` Alan Stern
2013-03-14 15:39 ` Jiri Kosina
2013-03-14 15:47 ` Jiri Kosina
2013-03-14 16:10 ` Alan Stern
2013-03-14 16:13 ` Alan Stern
2013-03-14 16:09 ` Jiri Kosina
2013-03-14 16:42 ` Peter Hurley
2013-03-14 16:46 ` Rafael J. Wysocki
2013-03-14 17:06 ` Peter Hurley
2013-03-14 17:22 ` Rafael J. Wysocki
2013-03-14 17:26 ` Peter Hurley
2013-03-15 7:59 ` Jiri Kosina
2013-03-15 9:20 ` Harald Arnesen
2013-03-15 13:33 ` Jiri Kosina
2013-03-15 13:33 ` Jiri Kosina
2013-03-15 15:14 ` Jiri Kosina
2013-03-15 19:14 ` Yinghai Lu
2013-03-18 9:12 ` Jiri Kosina
2013-03-18 18:57 ` Yinghai Lu
2013-03-18 22:05 ` Jiri Kosina
2013-03-18 22:50 ` Yinghai Lu
2013-03-18 19:19 ` Daniel Vetter
2013-03-18 19:57 ` Chris Wilson
2013-03-18 22:04 ` Jiri Kosina
2013-03-15 15:32 ` Greg KH
2013-03-15 15:37 ` Jiri Kosina
2013-03-15 15:47 ` Greg KH
2013-03-15 16:21 ` Jiri Kosina
2013-03-18 8:21 ` Daniel Vetter
2013-03-18 15:56 ` [PATCH] drm/i915: stop using GMBUS IRQs on Gen4 chips (was Re: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses)) Jiri Kosina
2013-03-18 17:04 ` Chris Wilson
2013-03-19 8:56 ` Jiri Kosina
2013-03-19 9:03 ` Chris Wilson
2013-03-18 19:21 ` Daniel Vetter
2013-03-18 11:13 ` [PATCH] drm/i915: Flush writes to GMBUS registers Chris Wilson
2013-03-18 11:51 ` Jiri Kosina
2013-03-18 12:48 ` Chris Wilson [this message]
2013-03-14 18:48 ` [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses) Yinghai Lu
2013-03-11 3:38 ` [3.9-rc1] very poor interrupt responses Rafael J. Wysocki
2013-03-11 10:09 ` Harald Arnesen
2013-03-11 14:55 ` Rafael J. Wysocki
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