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@aspeedtech.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 80fb1f5..c9c380c 100644 (file)
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -1308,6 +1308,7 @@ 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,