From: H Hartley Sweeten <hartleys@visionengravers.com>
Date: Thu, 25 Oct 2012 22:05:46 +0000 (-0700)
Subject: staging: comedi: me_daq: fix pointer dereference in me_detach()
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~84^2~940
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=736b605c897204b8c05f15160f12e70c61b2e6e6;p=pandora-kernel.git

staging: comedi: me_daq: fix pointer dereference in me_detach()

As pointed out by Dan Carpenter, dev_private could be NULL when it
is checked before calling comedi_pci_disable(). The private data
variable 'plx_regbase_size' is only used to see if the pci device
has been enabled.

Remove that variable from the private data and just use the unused
dev->iobase variable to let the detach know that the pci device
is enabled.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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