brcm47xx: fix ethernet link state (closes #7056)

SVN-Revision: 21042

target/linux/brcm47xx/patches-2.6.34/210-b44_phy_fix.patch

@@ -0,0 +1,78 @@
+--- drivers/net/b44.c.orig	2010-04-18 08:40:30.000000000 +0300
++++ drivers/net/b44.c	2010-04-18 10:53:47.000000000 +0300
+@@ -384,7 +384,7 @@
+ 	__b44_set_flow_ctrl(bp, pause_enab);
+ }
+ 
+-#ifdef SSB_DRIVER_MIPS
++#ifdef CONFIG_SSB_DRIVER_MIPS
+ extern char *nvram_get(char *name);
+ static void b44_wap54g10_workaround(struct b44 *bp)
+ {
+@@ -397,6 +397,7 @@
+ 	 * see https://dev.openwrt.org/ticket/146
+ 	 * check and reset bit "isolate"
+ 	 */
++
+ 	str = nvram_get("boardnum");
+ 	if (!str)
+ 		return;
+@@ -421,12 +422,49 @@
+ }
+ #endif
+ 
++#ifdef CONFIG_SSB_DRIVER_MIPS
++static inline int startswith (const char *source, const char *cmp) 
++{ 
++	return !strncmp(source,cmp,strlen(cmp)); 
++}
++
++#define getvar(str) (nvram_get(str) ? : "")
++
++static inline void b44_bcm47xx_workarounds(struct b44 *bp)
++{
++	/*
++	 * workaround for physical wiring in Linksys WRSL54GS
++	 * see https://dev.openwrt.org/ticket/2662 and 3903
++	 * eth1 PHY is probably on BCM5325 switch accessed via eth0
++	 */
++
++	if (simple_strtoul(getvar("boardnum"), NULL, 0) == 42) {
++		bp->phy_addr = B44_PHY_ADDR_NO_PHY;
++	} else {
++		/* WL-HDD */
++		struct ssb_device *sdev = bp->sdev;
++		if (startswith(getvar("hardware_version"), "WL300-")) {
++			if (sdev->bus->sprom.et0phyaddr == 0 &&
++			    sdev->bus->sprom.et1phyaddr == 1)
++				bp->phy_addr = B44_PHY_ADDR_NO_PHY;
++		}
++	}
++	return;
++}
++
++#else
++static inline void b44_bcm47xx_workarounds(struct b44 *bp) 
++{ 
++}
++#endif
++
+ static int b44_setup_phy(struct b44 *bp)
+ {
+ 	u32 val;
+ 	int err;
+ 
+ 	b44_wap54g10_workaround(bp);
++	b44_bcm47xx_workarounds(bp);
+ 
+ 	if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ 		return 0;
+@@ -2089,6 +2127,8 @@
+ 	 * valid PHY address. */
+ 	bp->phy_addr &= 0x1F;
+ 
++	b44_bcm47xx_workarounds(bp);
++
+ 	memcpy(bp->dev->dev_addr, addr, 6);
+ 
+ 	if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){