net: phy: Use interrupts when available in NOLINK state

The NOLINK state will poll the phy once a second to see if the link has come up. If the phy has an interrupt line, this polling can be skipped, since the phy should interrupt when the link returns. Signed-off-by: Andrew Lunn <[email protected]> Signed-off-by: David S. Miller <[email protected]>
wpd · Nov 17, 2015 · 321beec · 321beec
1 parent 819ec8e
commit 321beec
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
@@ -863,6 +863,9 @@ void phy_state_machine(struct work_struct *work)
 			needs_aneg = true;
 		break;
 	case PHY_NOLINK:
+		if (phy_interrupt_is_valid(phydev))
+			break;
+
 		err = phy_read_status(phydev);
 		if (err)
 			break;