[PATCH v4 net 2/3] lan78xx: Allow EEPROM write for less than MAX_EEPROM_SIZE

[Nisar Sayed]

Allow EEPROM write for less than MAX_EEPROM_SIZE

Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 
Ethernet device driver")
Signed-off-by: Nisar Sayed <nisar.sa...@microchip.com>
---
 drivers/net/usb/lan78xx.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index fcf85ae37435..3292f56ffe02 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -1290,11 +1290,10 @@ static int lan78xx_ethtool_set_eeprom(struct net_device 
*netdev,
        if (ret)
                return ret;
 
-       /* Allow entire eeprom update only */
-       if ((ee->magic == LAN78XX_EEPROM_MAGIC) &&
-           (ee->offset == 0) &&
-           (ee->len == 512) &&
-           (data[0] == EEPROM_INDICATOR))
+       /* Invalid EEPROM_INDICATOR at offset zero will result in fail to
+        * load data from EEPROM
+        */
+       if (ee->magic == LAN78XX_EEPROM_MAGIC)
                ret = lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
        else if ((ee->magic == LAN78XX_OTP_MAGIC) &&
                 (ee->offset == 0) &&
-- 
2.14.1