linux-kernel - [PATCH 1/5] net: stmmac: Remove WAKE_MAGIC if HW shows no pmt_magic

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Message-ID: <20200727190148.78bab66e@xhacker.debian>
Date:   Mon, 27 Jul 2020 19:01:48 +0800
From:   Jisheng Zhang <Jisheng.Zhang@...aptics.com>
To:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Russell King <linux@...linux.org.uk>
Cc:     netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] net: stmmac: Remove WAKE_MAGIC if HW shows no
 pmt_magic_frame

Remove WAKE_MAGIC from supported modes if the HW capability register
shows no support for pmt_magic_frame.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index eae11c585025..9e0af626a24a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -603,6 +603,8 @@ static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 	mutex_lock(&priv->lock);
 	if (device_can_wakeup(priv->device)) {
 		wol->supported = WAKE_MAGIC | WAKE_UCAST;
+		if (priv->hw_cap_support && !priv->dma_cap.pmt_magic_frame)
+			wol->supported &= ~WAKE_MAGIC;
 		wol->wolopts = priv->wolopts;
 	}
 	mutex_unlock(&priv->lock);
-- 
2.28.0.rc0