linux-kernel - [PATCH 1/2] net: bcmasp: Indicate MAC is in charge of PHY PM

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Message-Id: <20240215182732.1536941-2-justin.chen@broadcom.com>
Date: Thu, 15 Feb 2024 10:27:31 -0800
From: Justin Chen <justin.chen@...adcom.com>
To: netdev@...r.kernel.org
Cc: Florian Fainelli <florian.fainelli@...adcom.com>,
	Justin Chen <justin.chen@...adcom.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	bcm-kernel-feedback-list@...adcom.com (open list:BROADCOM ASP 2.0 ETHERNET DRIVER),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/2] net: bcmasp: Indicate MAC is in charge of PHY PM

From: Florian Fainelli <florian.fainelli@...adcom.com>

Avoid the PHY library call unnecessarily into the suspend/resume
functions by setting phydev->mac_managed_pm to true. The ASP driver
essentially does exactly what mdio_bus_phy_resume() does.

Fixes: 490cb412007d ("net: bcmasp: Add support for ASP2.0 Ethernet controller")
Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>
Signed-off-by: Justin Chen <justin.chen@...adcom.com>
---
 drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c
index f59557b0cd51..6ad1366270f7 100644
--- a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c
+++ b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c
@@ -1050,6 +1050,9 @@ static int bcmasp_netif_init(struct net_device *dev, bool phy_connect)
 			netdev_err(dev, "could not attach to PHY\n");
 			goto err_phy_disable;
 		}
+
+		/* Indicate that the MAC is responsible for PHY PM */
+		phydev->mac_managed_pm = true;
 	} else if (!intf->wolopts) {
 		ret = phy_resume(dev->phydev);
 		if (ret)
-- 
2.34.1


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