bcm43xx: check for valid MAC address in SPROM

Please apply to 2.6.17, as it fixes a problem that prevents bcm43xx devices which support 802.11a in addition to 802.11b/g from working, as the MAC address isn't detected correctly. This applies to 2.6.17-rc3.

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Check for valid MAC address in SPROM fields instead of relying on PHY type while setting the MAC address in the networking subsystem, as some devices have multiple PHYs.

Index: linux-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
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@@ -3482,7 +3482,7 @@

	bcm43xx_pctl_set_crystal(bcm, 0);

	/* Set the MAC address in the networking subsystem */
-	if (bcm43xx_current_phy(bcm)->type == BCM43xx_PHYTYPE_A)
+	if (is_valid_ether_addr(bcm->sprom.et1macaddr))
		memcpy(bcm->net_dev->dev_addr, bcm->sprom.et1macaddr, 6);
	else
		memcpy(bcm->net_dev->dev_addr, bcm->sprom.il0macaddr, 6);

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Ciao
Stefano