From: Antonino A. Daplas <adaplas@gmail.com>
Date: Mon, 26 Jun 2006 07:27:03 +0000 (-0700)
Subject: [PATCH] Detaching fbcon: fix give_up_console()
X-Git-Tag: v2.6.18-rc1~688
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c8ce271fe707d26b7bca4e490067fe65694b363;p=pandora-kernel.git

[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>
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