netdev - [PATCH] ftgmac100: Restart MAC HW once

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Message-Id: <20210312003405.439923-1-joel@jms.id.au>
Date:   Fri, 12 Mar 2021 11:04:05 +1030
From:   Joel Stanley <joel@....id.au>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Dylan Hung <dylan_hung@...eedtech.com>, netdev@...r.kernel.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [PATCH] ftgmac100: Restart MAC HW once

From: Dylan Hung <dylan_hung@...eedtech.com>

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@...eedtech.com>
Acked-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Reviewed-by: Joel Stanley <joel@....id.au>
Signed-off-by: Joel Stanley <joel@....id.au>
---
 drivers/net/ethernet/faraday/ftgmac100.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 88bfe2107938..04421aec2dfd 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -1337,6 +1337,7 @@ 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,
-- 
2.30.1