igc: Remove phy->type checking

stable inclusion
from stable-v5.10.118
commit d0229838b63c1f5f33a267c067e7e66e126929aa
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5L686

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d0229838b63c1f5f33a267c067e7e66e126929aa

--------------------------------

commit 47bca7de upstream.

i225 devices have only one phy->type: copper. There is no point checking
phy->type during the igc_has_link method from the watchdog that
invoked every 2 seconds.
This patch comes to clean up these pointless checkings.
Signed-off-by: NSasha Neftin <sasha.neftin@intel.com>
Tested-by: NDvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: NNobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>

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

@@ -4160,17 +4160,10 @@ bool igc_has_link(struct igc_adapter *adapter)
 	 * false until the igc_check_for_link establishes link
 	 * for copper adapters ONLY
 	 */
-	switch (hw->phy.media_type) {
-	case igc_media_type_copper:
 	if (!hw->mac.get_link_status)
 		return true;
 	hw->mac.ops.check_for_link(hw);
 	link_active = !hw->mac.get_link_status;
-		break;
-	default:
-	case igc_media_type_unknown:
-		break;
-	}
 
 	if (hw->mac.type == igc_i225) {
 		if (!netif_carrier_ok(adapter->netdev)) {