This is a note to let you know that I've just added the patch titled ftgmac100: Restart MAC HW once to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ftgmac100-restart-mac-hw-once.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 3d1c62e5752a2f6b1349ddcc78ffa60b3459acbf Author: Dylan Hung <dylan_hung@xxxxxxxxxxxxxx> Date: Fri Mar 12 11:04:05 2021 +1030 ftgmac100: Restart MAC HW once [ Upstream commit 6897087323a2fde46df32917462750c069668b2f ] The interrupt handler may set the flag to reset the mac in the future, but that flag is not cleared once the reset has occurred. Fixes: 10cbd6407609 ("ftgmac100: Rework NAPI & interrupts handling") Signed-off-by: Dylan Hung <dylan_hung@xxxxxxxxxxxxxx> Acked-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Reviewed-by: Joel Stanley <joel@xxxxxxxxx> Signed-off-by: Joel Stanley <joel@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 1aea22d2540f..4050f81f788c 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -1307,6 +1307,7 @@ static int ftgmac100_poll(struct napi_struct *napi, int budget) */ if (unlikely(priv->need_mac_restart)) { ftgmac100_start_hw(priv); + priv->need_mac_restart = false; /* Re-enable "bad" interrupts */ iowrite32(FTGMAC100_INT_BAD,