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

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Date:	Thu, 19 Jun 2014 16:42:19 +0200
From:	Konrad Zapalowicz <bergo.torino@...il.com>
To:	Daniel Vetter <daniel.vetter@...ll.ch>
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 06/19, Daniel Vetter wrote:
> 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

Thanks for comments and I will resubmit the patch, still it is better
to have it.

/Konrad

> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> +41 (0) 79 365 57 48 - http://blog.ffwll.ch
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