From: Miguel Ojeda <maxextreme@gmail.com>
Date: Tue, 20 Feb 2007 21:58:00 +0000 (-0800)
Subject: [PATCH] cfag12864b: fix crash when built-in and no parport present
X-Git-Tag: v2.6.21-rc1~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34173a4aad7a641e72b70f9927ca797746fbce69;p=pandora-kernel.git

[PATCH] cfag12864b: fix crash when built-in and no parport present

The problem comes when ks0108/cfag12864b are built-in and no parallel port is
present.  ks0108_init() is called first, as it should be, but fails to load
(as there is no parallel port to use).

After that, cfag12864b_init() gets called, without knowing anything about
ks0108 failed, and calls ks0108_writecontrol(), which dereferences an
uninitialized pointer.

Init order is OK, I think.  The problem is how to stop cfag12864b_init() being
called if ks0108 failed to load.  modprobe does it for us, but, how when
built-in?

Signed-off-by: Miguel Ojeda Sandonis <maxextreme@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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