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53 lines
1.5 KiB
Diff
53 lines
1.5 KiB
Diff
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From: Russell King <rmk+kernel@armlinux.org.uk>
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Date: Mon, 19 Dec 2016 12:17:57 +0000
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Subject: [PATCH] phylink: ensure link drops are reported
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When the MAC reports a link failure, it can be momentary. Ensure
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that the event is reported by latching the loss of link, so that the
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worker reports link down.
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Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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---
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--- a/drivers/net/phy/phylink.c
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+++ b/drivers/net/phy/phylink.c
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@@ -60,6 +60,8 @@ struct phylink {
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struct phylink_link_state phy_state;
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struct work_struct resolve;
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+ bool mac_link_dropped;
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+
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const struct phylink_module_ops *module_ops;
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void *module_data;
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};
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@@ -340,6 +342,9 @@ static void phylink_resolve(struct work_
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mutex_lock(&pl->state_mutex);
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if (pl->phylink_disable_state) {
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+ pl->mac_link_dropped = false;
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+ link_state.link = false;
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+ } else if (pl->mac_link_dropped) {
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link_state.link = false;
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} else {
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switch (pl->link_an_mode) {
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@@ -405,6 +410,10 @@ static void phylink_resolve(struct work_
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phylink_pause_to_str(link_state.pause));
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}
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}
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+ if (!link_state.link && pl->mac_link_dropped) {
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+ pl->mac_link_dropped = false;
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+ queue_work(system_power_efficient_wq, &pl->resolve);
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+ }
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mutex_unlock(&pl->state_mutex);
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}
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@@ -641,6 +650,8 @@ EXPORT_SYMBOL_GPL(phylink_disconnect_phy
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void phylink_mac_change(struct phylink *pl, bool up)
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{
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+ if (!up)
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+ pl->mac_link_dropped = true;
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phylink_run_resolve(pl);
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netdev_dbg(pl->netdev, "mac link %s\n", up ? "up" : "down");
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}
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