From 7fc1ece40704b150477e548a7a98d285cc418790 Mon Sep 17 00:00:00 2001
From: Michael Chan <mchan@broadcom.com>
Date: Fri, 14 Aug 2009 15:49:47 +0000
Subject: [PATCH] cnic: Fix locking in init/exit calls.

The slow path ulp_init and ulp_exit calls to the bnx2i driver
are sleepable calls and therefore should not be protected using
rcu_read_lock.  Fix it by using mutex and refcount during these
calls.  cnic_unregister_driver() will now wait for the refcount
to go to zero before completing the call.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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