igb: Workaround for igb i210 firmware issue
authorSumit Semwal <sumit.semwal@linaro.org>
Sat, 25 Mar 2017 16:18:02 +0000 (21:48 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 30 Mar 2017 07:35:19 +0000 (09:35 +0200)
commit4db313df49466185211ea7d6d675f8c4f6724e23
tree1f2d833af7317d89971c974e6f7a0025424b9291
parentec52364445a497a0045c61145f0d795b606c23bb
igb: Workaround for igb i210 firmware issue

From: Chris J Arges <christopherarges@gmail.com>

[ Upstream commit 4e684f59d760a2c7c716bb60190783546e2d08a1 ]

Sometimes firmware may not properly initialize I347AT4_PAGE_SELECT causing
the probe of an igb i210 NIC to fail. This patch adds an addition zeroing
of this register during igb_get_phy_id to workaround this issue.

Thanks for Jochen Henneberg for the idea and original patch.

Signed-off-by: Chris J Arges <christopherarges@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/intel/igb/e1000_phy.c