[Intel-gfx] [PATCH] drm/i915: Only unbind vgacon, not other console drivers

[Daniel Vetter]

On Tue, Jul 8, 2014 at 3:17 PM, David Herrmann <dh.herrmann at gmail.com> wrote:
>
> On Tue, Jul 8, 2014 at 10:08 AM, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
>> The console subsystem only provides a function to switch to a given
>> console, but we want to actually only switach away from vgacon.
>> Unconditionally switching to the dummy console resulted in switching
>> away from fbcon in multi-gpu setups when other gpu drivers are loaded
>> before i915.
>>
>> Then either the reinitialization of fbcon when i915 registers its
>> fbdev emulation or the teardown of the fbcon driver killed the
>> machine. So only switch to the dummy console when it's required.
>>
>> Kudos to Chris for the original idea, I've only refined it a bit to
>> still unregister vgacon even when it's currently unused.
>>
>> This regression has been introduced in
>>
>> commit a4de05268e674e8ed31df6348269e22d6c6a1803
>> Author: Daniel Vetter <daniel.vetter at ffwll.ch>
>> Date:   Thu Jun 5 16:20:46 2014 +0200
>>
>>     drm/i915: Kick out vga console
>>
>> Reported-and-tested-by: Ed Tomlinson <edt at aei.ca>
>> Cc: Chris Wilson <chris at chris-wilson.co.uk>
>> Cc: David Herrmann <dh.herrmann at gmail.com>
>> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>
> Reviewed-by: David Herrmann <dh.herrmann at gmail.com>

Pulled into -fixes, thanks for the reviews.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch