6.6-stable review patch. If anyone has any objections, please let me know.
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From: Paolo Abeni pabeni@redhat.com
commit 63a796558bc22ec699e4193d5c75534757ddf2e6 upstream.
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... Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/usb/asix_devices.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
--- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -607,8 +607,15 @@ static const struct net_device_ops ax887
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 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)