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r8152: Use MAC address from device tree if available

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If a MAC address was passed via the device tree node for the r8152
device, use it and fall back to reading from EEPROM otherwise. This is
useful for devices where the r8152 EEPROM was not programmed with a
valid MAC address, or if users want to explicitly set a MAC address in
the bootloader and pass that to the kernel.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thierry Reding 2020-05-14 14:38:48 +02:00 committed by David S. Miller
parent 0531b0357b
commit acb6d3771a
1 changed files with 13 additions and 9 deletions
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22
drivers/net/usb/r8152.c
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@ -1504,15 +1504,19 @@ static int determine_ethernet_addr(struct r8152 *tp, struct sockaddr *sa)
sa->sa_family = dev->type;
if (tp->version == RTL_VER_01) {
ret = pla_ocp_read(tp, PLA_IDR, 8, sa->sa_data);
} else {
/* if device doesn't support MAC pass through this will
* be expected to be non-zero
*/
ret = vendor_mac_passthru_addr_read(tp, sa);
if (ret < 0)
ret = pla_ocp_read(tp, PLA_BACKUP, 8, sa->sa_data);
ret = eth_platform_get_mac_address(&dev->dev, sa->sa_data);
if (ret < 0) {
if (tp->version == RTL_VER_01) {
ret = pla_ocp_read(tp, PLA_IDR, 8, sa->sa_data);
} else {
/* if device doesn't support MAC pass through this will
* be expected to be non-zero
*/
ret = vendor_mac_passthru_addr_read(tp, sa);
if (ret < 0)
ret = pla_ocp_read(tp, PLA_BACKUP, 8,
sa->sa_data);
}
}
if (ret < 0) {