netdev - [PATCH net 2/3] lan78xx: Allow EEPROM write for less than MAX_EEPROM

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Date:   Thu, 7 Sep 2017 07:11:26 +0000
From:   <Nisar.Sayed@...rochip.com>
To:     <davem@...emloft.net>
CC:     <UNGLinuxDriver@...rochip.com>, <netdev@...r.kernel.org>
Subject: [PATCH net 2/3] lan78xx: Allow EEPROM write for less than
 MAX_EEPROM_SIZE

From: Nisar Sayed <Nisar.Sayed@...rochip.com>

Allow EEPROM write for less than MAX_EEPROM_SIZE

Signed-off-by: Nisar Sayed <Nisar.Sayed@...rochip.com>
---
 drivers/net/usb/lan78xx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index baf91c7..94ef943 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -1299,6 +1299,10 @@ static int lan78xx_ethtool_set_eeprom(struct net_device *netdev,
 		 (ee->len == 512) &&
 		 (data[0] == OTP_INDICATOR_1))
 		ret = lan78xx_write_raw_otp(dev, ee->offset, ee->len, data);
+	else if ((ee->magic == LAN78XX_EEPROM_MAGIC) &&
+		 (ee->offset >= 0 && ee->offset < MAX_EEPROM_SIZE) &&
+		 (ee->len > 0 && (ee->offset + ee->len) <= MAX_EEPROM_SIZE))
+		ret = lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
 
 	usb_autopm_put_interface(dev->intf);
 
-- 
1.9.1