linux-kernel - Re: general protection fault on ttm

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Date:	Sat, 7 Jul 2012 10:08:47 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Dave Airlie <airlied@...il.com>
Cc:	Thomas Hellstrom <thellstrom@...are.com>,
	Dave Airlie <airlied@...hat.com>,
	dri-devel@...ts.freedesktop.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: general protection fault on ttm_init()

On Fri, Jul 06, 2012 at 06:09:20PM +0100, Dave Airlie wrote:
> On Fri, Jul 6, 2012 at 5:49 PM, Dave Airlie <airlied@...il.com> wrote:
> > On Fri, Jul 6, 2012 at 3:48 PM, Fengguang Wu <fengguang.wu@...el.com> wrote:
> >> ... The missed kconfig.
> >>
> >> On Fri, Jul 06, 2012 at 10:46:22PM +0800, Fengguang Wu wrote:
> >>> Hi Thomas,
> >
> > Wierd, I'm sorta tempted to just depend drm on CONFIG_PROC_FS, but it
> > looks like the error path is failing to dtrt.
> 
> I've attached a patch that should fix it, let me know if it works.

It does not work.. The dmesg (attached) remains the same.

> though since the drm fails on proc not being there I wonder should we
> just enforce proc being there if you pick drm.

Yeah, enabling PROC_FS does fix the error :)

Thanks,
Fengguang

View attachment "dmesg" of type "text/plain" (20278 bytes)