net: stmmac: Add PCI bus info to ethtool driver query output

This patch populates the PCI bus info in the ethtool driver query data.

Users will be able to view PCI bus info using 'ethtool -i <interface>'.
Signed-off-by: Wong Vee Khee <vee.khee.wong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c

@@ -236,6 +236,7 @@ static int intel_mgbe_common_data(struct pci_dev *pdev,
 	int ret;
 	int i;
 
+	plat->pdev = pdev;
 	plat->phy_addr = -1;
 	plat->clk_csr = 5;
 	plat->has_gmac = 0;

drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c

@@ -268,6 +268,10 @@ static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
 		strlcpy(info->driver, MAC100_ETHTOOL_NAME,
 			sizeof(info->driver));
 
+	if (priv->plat->pdev) {
+		strlcpy(info->bus_info, pci_name(priv->plat->pdev),
+			sizeof(info->bus_info));
+	}
 	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
 }
 

include/linux/stmmac.h

@@ -202,5 +202,6 @@ struct plat_stmmacenet_data {
 	bool vlan_fail_q_en;
 	u8 vlan_fail_q;
 	unsigned int eee_usecs_rate;
+	struct pci_dev *pdev;
 };
 #endif