igc: Clean up and optimize watchdog task

i225/i226 parts used only one media type copper. The copper media type is
not replaceable. Clean up the code accordingly, and remove the obsolete
media replacement and reset options.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/igc/igc.h

@@ -294,8 +294,6 @@ extern char igc_driver_name[];
 #define IGC_FLAG_PTP			BIT(8)
 #define IGC_FLAG_WOL_SUPPORTED		BIT(8)
 #define IGC_FLAG_NEED_LINK_UPDATE	BIT(9)
-#define IGC_FLAG_MEDIA_RESET		BIT(10)
-#define IGC_FLAG_MAS_ENABLE		BIT(12)
 #define IGC_FLAG_HAS_MSIX		BIT(13)
 #define IGC_FLAG_EEE			BIT(14)
 #define IGC_FLAG_VLAN_PROMISC		BIT(15)

drivers/net/ethernet/intel/igc/igc_main.c

@@ -5578,25 +5578,8 @@ static void igc_watchdog_task(struct work_struct *work)
 				mod_timer(&adapter->phy_info_timer,
 					  round_jiffies(jiffies + 2 * HZ));
 
-			/* link is down, time to check for alternate media */
-			if (adapter->flags & IGC_FLAG_MAS_ENABLE) {
-				if (adapter->flags & IGC_FLAG_MEDIA_RESET) {
-					schedule_work(&adapter->reset_task);
-					/* return immediately */
-					return;
-				}
-			}
 			pm_schedule_suspend(netdev->dev.parent,
 					    MSEC_PER_SEC * 5);
-
-		/* also check for alternate media here */
-		} else if (!netif_carrier_ok(netdev) &&
-			   (adapter->flags & IGC_FLAG_MAS_ENABLE)) {
-			if (adapter->flags & IGC_FLAG_MEDIA_RESET) {
-				schedule_work(&adapter->reset_task);
-				/* return immediately */
-				return;
-			}
 		}
 	}