From: Edwin Peer <edwin.peer@broadcom.com>
Date: Thu, 11 Feb 2021 02:24:23 -0500
Subject: bnxt_en: reverse order of TX disable and carrier off
Patch-mainline: v5.12-rc1
Git-commit: 132e0b65dc2b8bfa9721bfce834191f24fd1d7ed
References: git-fixes
A TX queue can potentially immediately timeout after it is stopped
and the last TX timestamp on that queue was more than 5 seconds ago with
carrier still up. Prevent these intermittent false TX timeouts
by bringing down carrier first before calling netif_tx_disable().
Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -8364,9 +8364,10 @@ void bnxt_tx_disable(struct bnxt *bp)
txr->dev_state = BNXT_DEV_STATE_CLOSING;
}
}
+ /* Drop carrier first to prevent TX timeout */
+ netif_carrier_off(bp->dev);
/* Stop all TX queues */
netif_tx_disable(bp->dev);
- netif_carrier_off(bp->dev);
}
void bnxt_tx_enable(struct bnxt *bp)