This function was added to the mainline Linux kernel in commit
e7f4dc353 "mdio: Move allocation of interrupts into core".
This will not work when someone requests irqs for the phys and does not
use polling mode
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
backport/backport-include/linux/phy.h | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/backport/backport-include/linux/phy.h b/backport/backport-include/linux/phy.h
index 1c75dc6..f727ac7 100644
--- a/backport/backport-include/linux/phy.h
+++ b/backport/backport-include/linux/phy.h
@@ -27,6 +27,35 @@ void phy_attached_print(struct phy_device *phydev, const char *fmt, ...)
__printf(2, 3);
#define phy_attached_info LINUX_BACKPORT(phy_attached_info)
void phy_attached_info(struct phy_device *phydev);
+
+static inline int backport_mdiobus_register(struct mii_bus *bus)
+{
+ bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
+ if (!bus->irq) {
+ pr_err("mii_bus irq allocation failed\n");
+ return -ENOMEM;
+ }
+
+ memset(bus->irq, PHY_POLL, sizeof(int) * PHY_MAX_ADDR);
+
+/* in kernel 4.3 a #define for mdiobus_register is added to the kernel. */
+#ifndef mdiobus_register
+ return mdiobus_register(bus);
+#else
+ return __mdiobus_register(bus, THIS_MODULE);
+#endif
+}
+#ifdef mdiobus_register
+#undef mdiobus_register
+#endif
+#define mdiobus_register LINUX_BACKPORT(mdiobus_register)
+
+static inline void backport_mdiobus_unregister(struct mii_bus *bus)
+{
+ kfree(bus->irq);
+ mdiobus_unregister(bus);
+}
+#define mdiobus_unregister LINUX_BACKPORT(mdiobus_unregister)
#endif /* < 4.5 */
#endif /* __BACKPORT_LINUX_PHY_H */
--
2.7.0
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