From: Benjamin Poirier <bpoirier@suse.de>
Date: Tue, 28 Apr 2015 21:49:29 +0000 (-0700)
Subject: mlx4: Fix tx ring affinity_mask creation
X-Git-Tag: omap-for-v4.2/wakeirq-drivers-v2~41^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42eab005a5dd5d7ea2b0328aecc4d6cc0c23c9c2;p=pandora-kernel.git

mlx4: Fix tx ring affinity_mask creation

By default, the number of tx queues is limited by the number of online cpus
in mlx4_en_get_profile(). However, this limit no longer holds after the
ethtool .set_channels method has been called. In that situation, the driver
may access invalid bits of certain cpumask variables when queue_index >=
nr_cpu_ids.

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Acked-by: Ido Shamay <idos@mellanox.com>
Fixes: d03a68f ("net/mlx4_en: Configure the XPS queue mapping on driver load")
Signed-off-by: David S. Miller <davem@davemloft.net>
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