| From foo@baz Wed Feb 28 16:16:23 CET 2018 |
| From: Siva Reddy Kallam <siva.kallam@broadcom.com> |
| Date: Fri, 22 Dec 2017 16:05:29 +0530 |
| Subject: tg3: Enable PHY reset in MTU change path for 5720 |
| |
| From: Siva Reddy Kallam <siva.kallam@broadcom.com> |
| |
| |
| [ Upstream commit e60ee41aaf898584205a6af5c996860d0fe6a836 ] |
| |
| 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@microsoft.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| drivers/net/ethernet/broadcom/tg3.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/drivers/net/ethernet/broadcom/tg3.c |
| +++ b/drivers/net/ethernet/broadcom/tg3.c |
| @@ -14214,7 +14214,8 @@ static int tg3_change_mtu(struct net_dev |
| */ |
| if (tg3_asic_rev(tp) == ASIC_REV_57766 || |
| 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; |
| |
| err = tg3_restart_hw(tp, reset_phy); |