From: Saeed Mahameed <saeedm@mellanox.com>
Date: Sun, 2 Nov 2014 14:26:13 +0000 (+0200)
Subject: net/mlx4_core: Prevent VF from changing port configuration
X-Git-Tag: omap-for-v3.19/fixes-rc1~125^2~294^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e8066999800d90d52af5c84ac49ebf683d14cdc;p=pandora-kernel.git

net/mlx4_core: Prevent VF from changing port configuration

Added wrapper to the ACCESS_REG command for handling guest HW
registers access, preventing write operations, but do allow reads.

This will prevent SRIOV guests to change port PTYS configuration,
such as speed/advertised link modes.

Fixes: adbc7ac5c15e ('net/mlx4_core: Introduce ACCESS_REG CMD [...]')
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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