From: Erez Shitrit <erezsh@mellanox.com>
Date: Wed, 16 Oct 2013 14:37:47 +0000 (+0300)
Subject: IPoIB: Fix crash in dev_open error flow
X-Git-Tag: v3.13-rc1~44^2^4~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c2bb5628db44735bc0095a8ef8efc0278ba245df;p=pandora-kernel.git

IPoIB: Fix crash in dev_open error flow

If napi has never been enabled when calling ipoib_ib_dev_stop, a
kernel crash occurs, because the verbs layer completion handler
(ipoib_ib_completion) calls napi_schedule unconditionally.

If the napi structure passed in the napi_schedule call has not
been initialized, napi will crash.

The cleanest solution is to simply enable napi before calling
ipoib_ib_dev_stop in the dev_open error flow. (dev_stop then
immediately disables napi).

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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