From: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Date: Thu, 25 Jun 2009 13:41:30 +0000 (+0100)
Subject: acm: Fix oops when closing ACM tty device right after open has failed.
X-Git-Tag: v2.6.31-rc2~88
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=922b13565b6a826a925f9f91f053dc9cb0d6210e;p=pandora-kernel.git

acm: Fix oops when closing ACM tty device right after open has failed.

This commit 10077d4a6674f535abdbe25cdecb1202af7948f1 has stopped
checking if there was a valid acm device associated to the tty, which is
not true right after open fails and tty subsystem tries to close the
device.

As an example, open fails with a non-existing device, when probe has
never been called, because the device has never been plugged. This is
common in systems with static modules and no udev.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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