Revert "net: usb: asix: ax88772: drop phylink use in PM to avoid MDIO runtime PM...

This reverts commit 5537a4679403 ("net: usb: asix: ax88772: drop
phylink use in PM to avoid MDIO runtime PM wakeups"), it breaks
operation of asix ethernet usb dongle after system suspend-resume
cycle.

Link: https://lore.kernel.org/all/b5ea8296-f981-445d-a09a-2f389d7f6fdd@samsung.com/
Fixes: 5537a4679403 ("net: usb: asix: ax88772: drop phylink use in PM to avoid MDIO runtime PM wakeups")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/2945b9dbadb8ee1fee058b19554a5cb14f1763c1.1757601118.git.pabeni@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index 1e8f7089f5e8a2f770bdb1f592e2236cbde839e8..792ddda1ad493d4db3da6001c073cb51ad5aeace 100644 (file)
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -607,8 +607,15 @@ static const struct net_device_ops ax88772_netdev_ops = {
 
 static void ax88772_suspend(struct usbnet *dev)
 {
+       struct asix_common_private *priv = dev->driver_priv;
        u16 medium;
 
+       if (netif_running(dev->net)) {
+               rtnl_lock();
+               phylink_suspend(priv->phylink, false);
+               rtnl_unlock();
+       }
+
        /* Stop MAC operation */
        medium = asix_read_medium_status(dev, 1);
        medium &= ~AX_MEDIUM_RE;
@@ -637,6 +644,12 @@ static void ax88772_resume(struct usbnet *dev)
        for (i = 0; i < 3; i++)
                if (!priv->reset(dev, 1))
                        break;
+
+       if (netif_running(dev->net)) {
+               rtnl_lock();
+               phylink_resume(priv->phylink);
+               rtnl_unlock();
+       }
 }
 
 static int asix_resume(struct usb_interface *intf)