Merge remote-tracking branch 'rt-stable/v4.9-rt' into linux-linaro-lsk-v4.9-rtlsk-v4.9-18.03-rt

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/phy.h b/include/linux/phy.h
index a04d69ab7c34..867110c9d707 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -684,6 +684,17 @@ static inline bool phy_is_internal(struct phy_device *phydev)
 }
 
 /**
+ * phy_interface_mode_is_rgmii - Convenience function for testing if a
+ * PHY interface mode is RGMII (all variants)
+ * @mode: the phy_interface_t enum
+ */
+static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode)
+{
+	return mode >= PHY_INTERFACE_MODE_RGMII &&
+		mode <= PHY_INTERFACE_MODE_RGMII_TXID;
+};
+
+/**
  * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
  * is RGMII (all variants)
  * @phydev: the phy_device struct