[BNX2]: Fix nvram sizing

Add code to correctly determine nvram size.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bnx2.c

@@ -2724,9 +2724,16 @@ bnx2_init_nvram(struct bnx2 *bp)
 	if (j == entry_count) {
 		bp->flash_info = NULL;
 		printk(KERN_ALERT PFX "Unknown flash/EEPROM type.\n");
-		rc = -ENODEV;
+		return -ENODEV;
 	}
 
+	val = REG_RD_IND(bp, bp->shmem_base + BNX2_SHARED_HW_CFG_CONFIG2);
+	val &= BNX2_SHARED_HW_CFG2_NVM_SIZE_MASK;
+	if (val)
+		bp->flash_size = val;
+	else
+		bp->flash_size = bp->flash_info->total_size;
+
 	return rc;
 }
 
@@ -4809,10 +4816,10 @@ bnx2_get_eeprom_len(struct net_device *dev)
 {
   	struct bnx2 *bp = dev->priv;
 
-	if (bp->flash_info == 0)
+	if (bp->flash_info == NULL)
 		return 0;
 
-	return (int) bp->flash_info->total_size;
+	return (int) bp->flash_size;
 }
 
 static int

drivers/net/bnx2.h

@@ -4072,6 +4072,7 @@ struct bnx2 {
 	struct net_device_stats net_stats;
 
 	struct flash_spec	*flash_info;
+	u32			flash_size;
 };
 
 static u32 bnx2_reg_rd_ind(struct bnx2 *bp, u32 offset);
@@ -4273,6 +4274,9 @@ struct fw_info {
 #define BNX2_SHARED_HW_CFG_LED_MODE_GPHY1	 0x100
 #define BNX2_SHARED_HW_CFG_LED_MODE_GPHY2	 0x200
 
+#define BNX2_SHARED_HW_CFG_CONFIG2		0x00000040
+#define BNX2_SHARED_HW_CFG2_NVM_SIZE_MASK	 0x00fff000
+
 #define BNX2_DEV_INFO_BC_REV			0x0000004c
 
 #define BNX2_PORT_HW_CFG_MAC_UPPER		0x00000050