linux-kernel - Re: [PATCH] drivers/i915: Fix unnoticed failure of init_ring

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Message-ID: <CAKMK7uEbtqa3uF82CwnD4mBYfOsFpGO-Cm94_U2UFw7orTULnA@mail.gmail.com>
Date:	Thu, 19 Jun 2014 16:36:24 +0200
From:	Daniel Vetter <daniel.vetter@...ll.ch>
To:	Konrad Zapalowicz <bergo.torino@...il.com>
Cc:	"Nikula, Jani" <jani.nikula@...ux.intel.com>,
	Dave Airlie <airlied@...ux.ie>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers/i915: Fix unnoticed failure of init_ring_common()

On Thu, Jun 19, 2014 at 4:35 PM, Daniel Vetter <daniel.vetter@...ll.ch> wrote:
> The actual bug we seem to have is blowing up on the ggtt_unpin in
> context_fini. Which is doubly-impossible: Gen4 doesn't have hw
> contexts, so should have dctx->obj == NULL. And ring init failures
> fail earlier so shouldn't even hit the context_fini code below the
> cleanup_gem: label in driver_load. Seriously confused here.

Also please retest with latest upstream, we've made the ring init
failure non-letal for the driver. That should help you, too.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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