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.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/phy.h b/include/linux/phy.h
index 6b872aed8ba6..cb5a2182ba6d 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -23,6 +23,7 @@
 #include <linux/workqueue.h>
 #include <linux/mod_devicetable.h>
 #include <linux/u64_stats_sync.h>
+#include <linux/irqreturn.h>
 
 #include <linux/atomic.h>
 
@@ -568,7 +569,7 @@ struct phy_driver {
 	int (*did_interrupt)(struct phy_device *phydev);
 
 	/* Override default interrupt handling */
-	int (*handle_interrupt)(struct phy_device *phydev);
+	irqreturn_t (*handle_interrupt)(struct phy_device *phydev);
 
 	/* Clears up any memory if needed */
 	void (*remove)(struct phy_device *phydev);