tree 42fc5fa81161065874b9aa751773d15465a8de9b
parent 50ec42edd9784fad6a37b05be03064ea24098db6
author Antonino A. Daplas <adaplas@gmail.com> 1151306823 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1151341112 -0700

[PATCH] Detaching fbcon: fix give_up_console()

To allow for detaching fbcon, it must be able to give up the console.
However, the function give_up_console() is plain broken.  It just sets the
entries in the console driver map to NULL, it leaves the vt layer without a
console driver, and does not decrement the module reference count.  Calling
give_up_console() is guaranteed to hang the machine..

To fix this problem, ensure that the virtual consoles are not left dangling
without a driver.  All systems have a default boot driver (either vgacon or
dummycon) which is never unloaded.  For those vt's that lost their driver, the
default boot driver is reassigned back to them.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>