net: amd-xgbe: ensure to reset the tx_timer_active flag

stable inclusion
from stable-v5.10.97
commit cadfa7dce526334d7ae1425cdc66c626f8adfbf5
bugzilla: https://gitee.com/openeuler/kernel/issues/I55O0O

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cadfa7dce526334d7ae1425cdc66c626f8adfbf5

--------------------------------

commit 7674b7b5 upstream.

Ensure to reset the tx_timer_active flag in xgbe_stop(),
otherwise a port restart may result in tx timeout due to
uncleared flag.

Fixes: c635eaac ("amd-xgbe: Remove Tx coalescing")
Co-developed-by: NSudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: NSudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: NRaju Rangoju <Raju.Rangoju@amd.com>
Acked-by: NTom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20220127060222.453371-1-Raju.Rangoju@amd.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYu Liao <liaoyu15@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/ethernet/amd/xgbe/xgbe-drv.c

@@ -721,7 +721,9 @@ static void xgbe_stop_timers(struct xgbe_prv_data *pdata)
 		if (!channel->tx_ring)
 			break;
 
+		/* Deactivate the Tx timer */
 		del_timer_sync(&channel->tx_timer);
+		channel->tx_timer_active = 0;
 	}
 }