netdev - [PATCH] bcm63xx_enet: fix internal phy IRQ assignment

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <2270332.afWbCi5vXM@tool>
Date:   Wed, 24 Feb 2021 15:56:08 +0100
From:   Daniel González Cabanelas <dgcbueu@...il.com>
To:     davem@...emloft.net
Cc:     kuba@...nel.org, f.fainelli@...il.com, gregkh@...uxfoundation.org,
        netdev@...r.kernel.org, noltari@...il.com
Subject: [PATCH] bcm63xx_enet: fix internal phy IRQ assignment

The current bcm63xx_enet driver doesn't asign the internal phy IRQ. As a
result of this it works in polling mode.

Fix it using the phy_device structure to assign the platform IRQ.

Tested under a BCM6348 board. Kernel dmesg before the patch:
   Broadcom BCM63XX (1) bcm63xx_enet-0:01: attached PHY driver [Broadcom
              BCM63XX (1)] (mii_bus:phy_addr=bcm63xx_enet-0:01, irq=POLL)

After the patch:
   Broadcom BCM63XX (1) bcm63xx_enet-0:01: attached PHY driver [Broadcom
              BCM63XX (1)] (mii_bus:phy_addr=bcm63xx_enet-0:01, irq=17)

Pluging and uplugging the ethernet cable now generates interrupts and the
PHY goes up and down as expected.

Signed-off-by: Daniel González Cabanelas <dgcbueu@...il.com>
---
 drivers/net/ethernet/broadcom/bcm63xx_enet.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
index fd876721316..0dad527abb9 100644
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -1819,7 +1819,14 @@ static int bcm_enet_probe(struct platform_device *pdev)
 		bus->phy_mask = ~(1 << priv->phy_id);
 
 		if (priv->has_phy_interrupt)
+			phydev = mdiobus_get_phy(bus, priv->phy_id);
+			if (!phydev) {
+				dev_err(&dev->dev, "no PHY found\n");
+				goto out_unregister_mdio;
+			}
+
 			bus->irq[priv->phy_id] = priv->phy_interrupt;
+			phydev->irq = priv->phy_interrupt;
 
 		ret = mdiobus_register(bus);
 		if (ret) {
-- 
2.30.1