Merge branch 'net-phy-improve-phy_driver-callback-handle_interrupt'

Heiner Kallweit says:

====================
net: phy: improve phy_driver callback handle_interrupt

did_interrupt() clears the interrupt, therefore handle_interrupt() can
not check which event triggered the interrupt. To overcome this
constraint and allow more flexibility for customer interrupt handlers,
let's decouple handle_interrupt() from parts of the phylib interrupt
handling. Custom interrupt handlers now have to implement the
did_interrupt() functionality in handle_interrupt() if needed.

Fortunately we have just one custom interrupt handler so far (in the
mscc PHY driver), convert it to the changed API and make use of the
benefits.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 26 insertions, 18 deletions

diff --git a/drivers/net/phy/mscc/mscc_main.c b/drivers/net/phy/mscc/mscc_main.c
index cb4d65f81095..2f6229a70ec1 100644
--- a/drivers/net/phy/mscc/mscc_main.c
+++ b/drivers/net/phy/mscc/mscc_main.c
@@ -1429,11 +1429,21 @@ err:
 	return ret;
 }
 
-static int vsc8584_handle_interrupt(struct phy_device *phydev)
+static irqreturn_t vsc8584_handle_interrupt(struct phy_device *phydev)
 {
-	vsc8584_handle_macsec_interrupt(phydev);
-	phy_mac_interrupt(phydev);
-	return 0;
+	int irq_status;
+
+	irq_status = phy_read(phydev, MII_VSC85XX_INT_STATUS);
+	if (irq_status < 0 || !(irq_status & MII_VSC85XX_INT_MASK_MASK))
+		return IRQ_NONE;
+
+	if (irq_status & MII_VSC85XX_INT_MASK_EXT)
+		vsc8584_handle_macsec_interrupt(phydev);
+
+	if (irq_status & MII_VSC85XX_INT_MASK_LINK_CHG)
+		phy_mac_interrupt(phydev);
+
+	return IRQ_HANDLED;
 }
 
 static int vsc85xx_config_init(struct phy_device *phydev)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 355bfdef48d2..d71212a418f3 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -715,26 +715,24 @@ static int phy_disable_interrupts(struct phy_device *phydev)
 static irqreturn_t phy_interrupt(int irq, void *phy_dat)
 {
 	struct phy_device *phydev = phy_dat;
+	struct phy_driver *drv = phydev->drv;
 
-	if (phydev->drv->did_interrupt && !phydev->drv->did_interrupt(phydev))
+	if (drv->handle_interrupt)
+		return drv->handle_interrupt(phydev);
+
+	if (drv->did_interrupt && !drv->did_interrupt(phydev))
 		return IRQ_NONE;
 
-	if (phydev->drv->handle_interrupt) {
-		if (phydev->drv->handle_interrupt(phydev))
-			goto phy_err;
-	} else {
-		/* reschedule state queue work to run as soon as possible */
-		phy_trigger_machine(phydev);
-	}
+	/* reschedule state queue work to run as soon as possible */
+	phy_trigger_machine(phydev);
 
 	/* did_interrupt() may have cleared the interrupt already */
-	if (!phydev->drv->did_interrupt && phy_clear_interrupt(phydev))
-		goto phy_err;
-	return IRQ_HANDLED;
+	if (!drv->did_interrupt && phy_clear_interrupt(phydev)) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
 
-phy_err:
-	phy_error(phydev);
-	return IRQ_NONE;
+	return IRQ_HANDLED;
 }
 
 /**