From: Roland Dreier <rolandd@cisco.com>
Date: Tue, 18 Oct 2005 21:14:56 +0000 (-0700)
Subject: [IB] Fail sysfs queries after device is unregistered
X-Git-Tag: v2.6.15-rc1~731^2~21^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba8e9310244180bbc820e865d2e4378809b4a443;p=pandora-kernel.git

[IB] Fail sysfs queries after device is unregistered

We keep IB device structures around until the last sysfs reference is
gone, but we shouldn't ask the low-level driver to do anything after
the LLD unregisters the device.  To handle this, check the reg_state
field and just fail sysfs show() requests if the device has already
been unregistered.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
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