netdev - [PATCH 2/4] r6040: check PHY status when bringing interface up

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Date:	Wed, 7 Jan 2009 17:40:37 +0100
From:	Florian Fainelli <florian@...nwrt.org>
To:	David Miller <davem@...emloft.net>, Jeff Garzik <jeff@...zik.org>,
	netdev@...r.kernel.org
Subject: [PATCH 2/4] r6040: check PHY status when bringing interface up

From: Florian Fainelli <florian@...nwrt.org>
Subject: [PATCH 2/4] r6040: check PHY status when bringing interface up

This patch makes the driver properly initialize the PHY
status if not correctly set by the bootloader/BIOS.
It prevents some boards to bring up the link on boot.

Signed-off-by: Florian Fainelli <florian@...nwrt.org>
---
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index 3e685d7..a59efbd 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -1107,6 +1107,10 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
 		err = -EIO;
 		goto err_out_free_res;
 	}
+	/* If PHY status change register is still set to zero it means the
+	 * bootloader didn't initialize it */
+	if (ioread16(ioaddr + PHY_CC) == 0)
+		iowrite16(0x9f07, ioaddr + PHY_CC);
 
 	/* Init system & device */
 	lp->base = ioaddr;
--
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