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authorRichard Mortimer <richm@oldelvet.org.uk>2011-01-06 11:50:30 -0800
committerDavid S. Miller <davem@davemloft.net>2011-01-06 11:50:30 -0800
commit4e3dbdb1392a83bd21a6ff8f6bc785495058d37c (patch)
treefe455c384a1e470b49bf504bc15b9c44ae81504e
parent2ad0d9d413abc3380fc1d89a9da7f8db59d9746b (diff)
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cassini: Use local-mac-address prom property for Cassini MAC address
Fallback on the local-mac-address prom property if the Cassini device does not have an address programmed in the VPD ROM. This uses the same technique as implemented by the sungem driver. The problem was reported by Frans van Berckel using Debian kernel 2.6.34-7 on Sun Fire V440. udev was assigning a new eth<n> device name on each reboot because the cassini driver was using a random MAC address. Fix tested on 2.6.34-7 and 2.6.37 Sun Fire V440. Compile tested against 2.6.36 davem/sparc-2.6.git Reported-by: Frans van Berckel <fberckel@xs4all.nl> Tested-by: Frans van Berckel <fberckel@xs4all.nl> Reviewed-by: Julian Calaby <julian.calaby@gmail.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Richard Mortimer <richm@oldelvet.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/cassini.c16
-rw-r--r--drivers/net/cassini.h3
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index 73502fef8769..7206ab2cbbf8 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -3203,6 +3203,10 @@ static int cas_get_vpd_info(struct cas *cp, unsigned char *dev_addr,
int phy_type = CAS_PHY_MII_MDIO0; /* default phy type */
int mac_off = 0;
+#if defined(CONFIG_OF)
+ const unsigned char *addr;
+#endif
+
/* give us access to the PROM */
writel(BIM_LOCAL_DEV_PROM | BIM_LOCAL_DEV_PAD,
cp->regs + REG_BIM_LOCAL_DEV_EN);
@@ -3350,6 +3354,14 @@ use_random_mac_addr:
if (found & VPD_FOUND_MAC)
goto done;
+#if defined(CONFIG_OF)
+ addr = of_get_property(cp->of_node, "local-mac-address", NULL);
+ if (addr != NULL) {
+ memcpy(dev_addr, addr, 6);
+ goto done;
+ }
+#endif
+
/* Sun MAC prefix then 3 random bytes. */
pr_info("MAC address not found in ROM VPD\n");
dev_addr[0] = 0x08;
@@ -5019,6 +5031,10 @@ static int __devinit cas_init_one(struct pci_dev *pdev,
cp->msg_enable = (cassini_debug < 0) ? CAS_DEF_MSG_ENABLE :
cassini_debug;
+#if defined(CONFIG_OF)
+ cp->of_node = pci_device_to_OF_node(pdev);
+#endif
+
cp->link_transition = LINK_TRANSITION_UNKNOWN;
cp->link_transition_jiffies_valid = 0;
diff --git a/drivers/net/cassini.h b/drivers/net/cassini.h
index dbc47878d83b..faf4746a0f3e 100644
--- a/drivers/net/cassini.h
+++ b/drivers/net/cassini.h
@@ -2868,6 +2868,9 @@ struct cas {
dma_addr_t block_dvma, tx_tiny_dvma[N_TX_RINGS];
struct pci_dev *pdev;
struct net_device *dev;
+#if defined(CONFIG_OF)
+ struct device_node *of_node;
+#endif
/* Firmware Info */
u16 fw_load_addr;