tree e9a607c2c47e22a020620c1e6abc95c962e46814
parent 1bae4ce27c9c90344f23c65ea6966c50ffeae2f5
author Dave Airlie <airlied@redhat.com> 1294358261 +1000
committer Greg Kroah-Hartman <gregkh@suse.de> 1295752500 -0800

vt: fix issue when fbcon wants to takeover a second time.

With framebuffer handover and multiple GPUs, we get into a
position where the fbcon unbinds the vesafb framebuffer for GPU 1,
but we still have a radeon framebuffer bound from GPU 0, so
we don't unregister the console driver. Then when we tried to bind
the new radeon framebuffer for GPU1 we never get to the bind
call as we fail due to the console being registered already.

This changes the return value to -EBUSY when the driver is
already registered and continues to bind for -EBUSY.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>