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--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -2249,6 +2249,38 @@ static u8 __devinit nibble (unsigned cha
return 0;
}
+static inline unsigned int is_gumstix_oui(u8 *addr)
+{
+ return (addr[0] == 0x00 && addr[1] == 0x15 && addr[2] == 0xC9);
+}
+
+/**
+ * gen_serial_ether_addr - Generate software assigned Ethernet address
+ * based on the system_serial number
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Generate an Ethernet address (MAC) that is not multicast
+ * and has the local assigned bit set, keyed on the system_serial
+ */
+static inline void gen_serial_ether_addr(u8 *addr)
+{
+ static u8 ether_serial_digit = 0;
+ addr [0] = system_serial_high >> 8;
+ addr [1] = system_serial_high;
+ addr [2] = system_serial_low >> 24;
+ addr [3] = system_serial_low >> 16;
+ addr [4] = system_serial_low >> 8;
+ addr [5] = (system_serial_low & 0xc0) | /* top bits are from system serial */
+ (2 << 4) | /* 2 bits identify interface type 1=ether, 2=usb, 3&4 undef */
+ ((ether_serial_digit++) & 0x0f); /* 15 possible interfaces of each type */
+
+ if(!is_gumstix_oui(addr))
+ {
+ addr [0] &= 0xfe; /* clear multicast bit */
+ addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
+ }
+}
+
static int __devinit get_ether_addr(const char *str, u8 *dev_addr)
{
if (str) {
@@ -2266,8 +2298,16 @@ static int __devinit get_ether_addr(cons
if (is_valid_ether_addr (dev_addr))
return 0;
}
- random_ether_addr(dev_addr);
- return 1;
+ if(system_serial_high | system_serial_low)
+ {
+ gen_serial_ether_addr(dev_addr);
+ return 0;
+ }
+ else
+ {
+ random_ether_addr(dev_addr);
+ return 1;
+ }
}
static int __devinit
|
