[PATCH] r8152: Add support for MAC address pass through on RTL8153-BD

[David Chen]

From: David Chen <david.ch...@dell.com>

RTL8153-BD is used in Dell DA300 type-C dongle.
It should be added to the whitelist of devices to activate MAC address
pass through.

Per confirming with Realtek all devices containing RTL8153-BD should
activate MAC pass through and there won't use pass through bit on efuse
like in RTL8153-AD.

Signed-off-by: David Chen <david.ch...@dell.com>
---
 drivers/net/usb/r8152.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 60dd1ec1665f..ada6baf8847a 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -557,6 +557,7 @@ enum spd_duplex {
 /* MAC PASSTHRU */
 #define AD_MASK                        0xfee0
 #define BND_MASK               0x0004
+#define BD_MASK                        0x0001
 #define EFUSE                  0xcfdb
 #define PASS_THRU_MASK         0x1
 
@@ -1176,9 +1177,9 @@ static int vendor_mac_passthru_addr_read(struct r8152 
*tp, struct sockaddr *sa)
                        return -ENODEV;
                }
        } else {
-               /* test for RTL8153-BND */
+               /* test for RTL8153-BND and RTL8153-BD */
                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
-               if ((ocp_data & BND_MASK) == 0) {
+               if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK)) {
                        netif_dbg(tp, probe, tp->netdev,
                                  "Invalid variant for MAC pass through\n");
                        return -ENODEV;
-- 
2.19.1