From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date: Mon, 20 Jul 2015 11:57:21 +0000 (+0530)
Subject: auxdisplay: ks0108: fix refcount
X-Git-Tag: v3.2.72~69
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3170aab0b1a13c7c63061cee5dc3a5d49a65225;p=pandora-kernel.git

auxdisplay: ks0108: fix refcount

commit bab383de3b84e584b0f09227151020b2a43dc34c upstream.

parport_find_base() will implicitly do parport_get_port() which
increases the refcount. Then parport_register_device() will again
increment the refcount. But while unloading the module we are only
doing parport_unregister_device() decrementing the refcount only once.
We add an parport_put_port() to neutralize the effect of
parport_get_port().

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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