fbdev: fbcon: select VT_HW_CONSOLE_BINDING

fbdev provides framebuffer hotplugging, hence, we need to allow fbcon to
unbind from framebuffers. Unfortunately, fbcon_fb_unbind() cannot unbind
from the last framebuffer, unless console-unbinding is supported.

Fixing fbcon_unbind() to return 0 caused some horrible NULL-derefs in the
VT layer and I couldn't figure out why. Hence, lets just require
console-unbinding so fbdev hotplugging works with fbcon.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Link: http://lkml.kernel.org/r/1375445127-15480-9-git-send-email-dh.herrmann@gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index 8c30603e0a86f6b2c6dfaa51d398621ad4529328..846caab75a460f72819a629d1c2c25c14cc8a0a2 100644 (file)
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -92,7 +92,8 @@ config DUMMY_CONSOLE_ROWS
 
 config FRAMEBUFFER_CONSOLE
        tristate "Framebuffer Console support"
-       depends on FB
+       depends on FB && !UML
+       select VT_HW_CONSOLE_BINDING
        select CRC32
        select FONT_SUPPORT
        help