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tg3: Enable PHY reset in MTU change path for 5720

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[ Upstream commit e60ee41aaf ]

A customer noticed RX path hang when MTU is changed on the fly while
running heavy traffic with NCSI enabled for 5717 and 5719. Since 5720
belongs to same ASIC family, we observed same issue and same fix
could solve this problem for 5720.

Signed-off-by: Siva Reddy Kallam <siva.kallam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Siva Reddy Kallam
2017-12-22 16:05:29 +05:30
committed by Greg Kroah-Hartman
parent 2c0d89a273
commit 9f00176d7c
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/broadcom/tg3.c
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@ -14239,7 +14239,8 @@ static int tg3_change_mtu(struct net_device *dev, int new_mtu)
*/ */
if (tg3_asic_rev(tp) == ASIC_REV_57766 || if (tg3_asic_rev(tp) == ASIC_REV_57766 ||
tg3_asic_rev(tp) == ASIC_REV_5717 || tg3_asic_rev(tp) == ASIC_REV_5717 ||
tg3_asic_rev(tp) == ASIC_REV_5719) tg3_asic_rev(tp) == ASIC_REV_5719 ||
tg3_asic_rev(tp) == ASIC_REV_5720)
reset_phy = true; reset_phy = true;
err = tg3_restart_hw(tp, reset_phy); err = tg3_restart_hw(tp, reset_phy);