be2net: fix max VFs reported by HW

BE3 FW allocates VF resources for upto 30 VFs per PF while a max value of 32
may be reported via PCI config space. Fix this in the driver.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be.h

@@ -110,6 +110,7 @@ static inline char *nic_name(struct pci_dev *pdev)
 #define MAX_RX_POST		BE_NAPI_WEIGHT /* Frags posted at a time */
 #define RX_FRAGS_REFILL_WM	(RX_Q_LEN - MAX_RX_POST)
 
+#define MAX_VFS			30 /* Max VFs supported by BE3 FW */
 #define FW_VER_LEN		32
 
 struct be_dma_mem {

drivers/net/ethernet/emulex/benet/be_main.c

@@ -2723,6 +2723,8 @@ static int be_get_config(struct be_adapter *adapter)
 	if (pos) {
 		pci_read_config_word(adapter->pdev, pos + PCI_SRIOV_TOTAL_VF,
 				     &dev_num_vfs);
+		if (!lancer_chip(adapter))
+			dev_num_vfs = min_t(u16, dev_num_vfs, MAX_VFS);
 		adapter->dev_num_vfs = dev_num_vfs;
 	}
 	return 0;