e1000e: limit EEPROM size accesses

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/net/e1000e/82571.c

@@ -171,6 +171,10 @@ static s32 e1000_init_nvm_params_82571(struct e1000_hw *hw)
 		 * for setting word_size.
 		 */
 		size += NVM_WORD_SIZE_BASE_SHIFT;
+
+		/* EEPROM access above 16k is unsupported */
+		if (size > 14)
+			size = 14;
 		nvm->word_size	= 1 << size;
 		break;
 	}

drivers/net/e1000e/es2lan.c

@@ -178,6 +178,10 @@ static s32 e1000_init_nvm_params_80003es2lan(struct e1000_hw *hw)
 	 * for setting word_size.
 	 */
 	size += NVM_WORD_SIZE_BASE_SHIFT;
+
+	/* EEPROM access above 16k is unsupported */
+	if (size > 14)
+		size = 14;
 	nvm->word_size	= 1 << size;
 
 	return 0;