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lan78xx: Allow EEPROM write for less than MAX_EEPROM_SIZE 

Allow EEPROM write for less than MAX_EEPROM_SIZE

Fixes: 55d7de9de6 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nisar Sayed 2017-09-21 02:36:37 +05:30 committed by David S. Miller
parent 8a7ffeb795
commit c077682282
1 changed files with 4 additions and 5 deletions
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9
drivers/net/usb/lan78xx.c
View File

@ -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 a failure
* 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) &&