openwrt/target/linux/generic/backport-4.19/702-v4.20-net-ethernet-Add-helper-for-MACs-which-support-asym-.patch

From 1da223db3a0c522300b519ecbe1dc45927e28088 Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Wed, 12 Sep 2018 01:53:15 +0200
Subject: [PATCH 600/660] net: ethernet: Add helper for MACs which support asym
 pause

Rather than have the MAC drivers manipulate phydev members to indicate
they support Asym Pause, add a helper function.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/phy/phy_device.c | 13 +++++++++++++
 include/linux/phy.h          |  1 +
 2 files changed, 14 insertions(+)

--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1781,6 +1781,19 @@ int phy_set_max_speed(struct phy_device
 }
 EXPORT_SYMBOL(phy_set_max_speed);
 
+/**
+ * phy_support_asym_pause - Enable support of asym pause
+ * @phydev: target phy_device struct
+ *
+ * Description: Called by the MAC to indicate is supports Asym Pause.
+ */
+void phy_support_asym_pause(struct phy_device *phydev)
+{
+	phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
+	phydev->advertising = phydev->supported;
+}
+EXPORT_SYMBOL(phy_support_asym_pause);
+
 static void of_set_phy_supported(struct phy_device *phydev)
 {
 	struct device_node *node = phydev->mdio.dev.of_node;
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1051,6 +1051,7 @@ int phy_mii_ioctl(struct phy_device *phy
 int phy_start_interrupts(struct phy_device *phydev);
 void phy_print_status(struct phy_device *phydev);
 int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
+void phy_support_asym_pause(struct phy_device *phydev);
 
 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
 		       int (*run)(struct phy_device *));