net: phy: ti: take into account all possible interrupt sources

The previous implementation of .handle_interrupt() did not take into
account the fact that all the interrupt status registers should be
acknowledged since multiple interrupt sources could be asserted.

Fix this by reading all the status registers before exiting with
IRQ_NONE or triggering the PHY state machine.

Fixes: 1d1ae3c6ca3f ("net: phy: ti: implement generic .handle_interrupt() callback")
Reported-by: Sven Schuchmann <[e-mail]>
Signed-off-by: Ioana Ciornei <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/phy/dp83822.c

···
 
 static irqreturn_t dp83822_handle_interrupt(struct phy_device *phydev)
 {
+	bool trigger_machine = false;
 	int irq_status;
 
 	/* The MISR1 and MISR2 registers are holding the interrupt status in
···
 		return IRQ_NONE;
 	}
 	if (irq_status & ((irq_status & GENMASK(7, 0)) << 8))
-		goto trigger_machine;
+		trigger_machine = true;
 
 	irq_status = phy_read(phydev, MII_DP83822_MISR2);
 	if (irq_status < 0) {
···
 		return IRQ_NONE;
 	}
 	if (irq_status & ((irq_status & GENMASK(7, 0)) << 8))
-		goto trigger_machine;
+		trigger_machine = true;
 
-	return IRQ_NONE;
+	if (!trigger_machine)
+		return IRQ_NONE;
 
-trigger_machine:
 	phy_trigger_machine(phydev);
 
 	return IRQ_HANDLED;

drivers/net/phy/dp83tc811.c

···
 
 static irqreturn_t dp83811_handle_interrupt(struct phy_device *phydev)
 {
+	bool trigger_machine = false;
 	int irq_status;
 
 	/* The INT_STAT registers 1, 2 and 3 are holding the interrupt status
···
 		return IRQ_NONE;
 	}
 	if (irq_status & ((irq_status & GENMASK(7, 0)) << 8))
-		goto trigger_machine;
+		trigger_machine = true;
 
 	irq_status = phy_read(phydev, MII_DP83811_INT_STAT2);
 	if (irq_status < 0) {
···
 		return IRQ_NONE;
 	}
 	if (irq_status & ((irq_status & GENMASK(7, 0)) << 8))
-		goto trigger_machine;
+		trigger_machine = true;
 
 	irq_status = phy_read(phydev, MII_DP83811_INT_STAT3);
 	if (irq_status < 0) {
···
 		return IRQ_NONE;
 	}
 	if (irq_status & ((irq_status & GENMASK(7, 0)) << 8))
-		goto trigger_machine;
+		trigger_machine = true;
 
-	return IRQ_NONE;
+	if (!trigger_machine)
+		return IRQ_NONE;
 
-trigger_machine:
 	phy_trigger_machine(phydev);
 
 	return IRQ_HANDLED;