linux-kernel - Re: [Regression + patch] i915 / PM: System resume broken on 945GM

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Date:	Wed, 11 Apr 2012 18:33:26 -0400
From:	Woody Suwalski <terraluna977@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Chris Wilson <chris@...is-wilson.co.uk>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [Regression + patch] i915 / PM: System resume broken on 945GM

Rafael J. Wysocki wrote:
> Hi Chris,
>
> Unfortunately, your commit
>
> commit 7dd4906586274f3945f2aeaaa5a33b451c3b4bba
> Author: Chris Wilson<chris@...is-wilson.co.uk>
> Date:   Wed Mar 21 10:48:18 2012 +0000
>
>      drm/i915: Mark untiled BLT commands as fenced on gen2/3
>
> breaks system resume on my Toshiba Portege R500 (945GM) which hangs hard
> during or right after returning to X.
>
> The appended patch fixes the issue for me, FWIW.
>
> Thanks,
> Rafael
>
> ---
>   drivers/gpu/drm/i915/i915_gem_execbuffer.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: linux/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> ===================================================================
> --- linux.orig/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> +++ linux/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> @@ -498,7 +498,7 @@ pin_and_fence_object(struct drm_i915_gem
>   				if (ret)
>   					goto err_unpin;
>   			}
> -			obj->pending_fenced_gpu_access = true;
> +			obj->pending_fenced_gpu_access = need_fence;
>   		}
>   	}
>
> --
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Helps on Eeepc as well...

Thanks, Woody

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