From 5e5069b41d5b82bcadc1dbf73f48476b428c102f Mon Sep 17 00:00:00 2001
From: Roger Luethi <rl@hellgate.ch>
Date: Thu, 17 Mar 2011 06:37:21 +0000
Subject: [PATCH] ethtool: __ethtool_set_sg: check for function pointer before
 using it

__ethtool_set_sg does not check if dev->ethtool_ops->set_sg is defined
which can result in a NULL pointer dereference when ethtool is used to
change SG settings for drivers without SG support.

Signed-off-by: Roger Luethi <rl@hellgate.ch>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed