linux-kernel - Re: Linux 4.1 WARNING in drm

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Date:	Tue, 23 Jun 2015 12:46:09 +0200
From:	Fabio Coatti <fabio.coatti@...il.com>
To:	Daniel Vetter <daniel@...ll.ch>
Cc:	Daniel Stone <daniel@...ishbar.org>,
	David Airlie <airlied@...ux.ie>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: Linux 4.1 WARNING in drm_ioctl.c

In data martedì 23 giugno 2015 11:48:47, Daniel Vetter ha scritto:
> On Tue, Jun 23, 2015 at 08:27:13AM +0100, Daniel Stone wrote:
> > Hi,
> > 
> > On 23 June 2015 at 07:39, Daniel Vetter <daniel@...ll.ch> wrote:
> > > Which drm driver are you using? I didn't spot anything in your module
> > > list
> > > but might have missed it. Booting with drm.debug=0xe and grabbing dmesg
> > > will tell us for sure.
> > 
> > That'd be vgem.
> 
> If so then the below diff should help.
> -Daniel
> diff --git a/drivers/gpu/drm/vgem/vgem_drv.c
> b/drivers/gpu/drm/vgem/vgem_drv.c index 7a207ca547be..b491fb32cddb 100644
> --- a/drivers/gpu/drm/vgem/vgem_drv.c
> +++ b/drivers/gpu/drm/vgem/vgem_drv.c
> @@ -328,6 +328,8 @@ static int __init vgem_init(void)
>  		goto out;
>  	}
> 
> +	drm_dev_set_unique(drm, "vgem");
> +
>  	ret  = drm_dev_register(vgem_device, 0);
> 
>  	if (ret)


Not really sure about "drm" in drm_dev_set_unique():

  CHK     include/generated/compile.h
  GZIP    kernel/config_data.gz
  CHK     kernel/config_data.h
  CC      drivers/gpu/drm/vgem/vgem_drv.o
drivers/gpu/drm/vgem/vgem_drv.c: In function ‘vgem_init’:
drivers/gpu/drm/vgem/vgem_drv.c:331:21: error: ‘drm’ undeclared (first use in 
this function)



-- 
Fabio
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