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82 lines
2.3 KiB
Diff
82 lines
2.3 KiB
Diff
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From bfac8c490d605bea03b1f1927582b6f396462164 Mon Sep 17 00:00:00 2001
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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
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Date: Mon, 27 Jun 2022 12:44:43 +0100
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Subject: [PATCH] net: phylink: disable PCS polling over major configuration
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While we are performing a major configuration, there is no point having
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the PCS polling timer running. Stop it before we begin preparing for
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the configuration change, and restart it only once we've successfully
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completed the change.
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/phy/phylink.c | 30 ++++++++++++++++++++----------
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1 file changed, 20 insertions(+), 10 deletions(-)
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--- a/drivers/net/phy/phylink.c
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+++ b/drivers/net/phy/phylink.c
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@@ -756,6 +756,18 @@ static void phylink_resolve_flow(struct
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}
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}
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+static void phylink_pcs_poll_stop(struct phylink *pl)
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+{
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+ if (pl->cfg_link_an_mode == MLO_AN_INBAND)
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+ del_timer(&pl->link_poll);
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+}
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+
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+static void phylink_pcs_poll_start(struct phylink *pl)
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+{
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+ if (pl->pcs->poll && pl->cfg_link_an_mode == MLO_AN_INBAND)
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+ mod_timer(&pl->link_poll, jiffies + HZ);
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+}
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+
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static void phylink_mac_config(struct phylink *pl,
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const struct phylink_link_state *state)
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{
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@@ -787,6 +799,7 @@ static void phylink_major_config(struct
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const struct phylink_link_state *state)
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{
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struct phylink_pcs *pcs = NULL;
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+ bool pcs_changed = false;
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int err;
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phylink_dbg(pl, "major config %s\n", phy_modes(state->interface));
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@@ -799,8 +812,12 @@ static void phylink_major_config(struct
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pcs);
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return;
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}
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+
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+ pcs_changed = pcs && pl->pcs != pcs;
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}
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+ phylink_pcs_poll_stop(pl);
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+
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if (pl->mac_ops->mac_prepare) {
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err = pl->mac_ops->mac_prepare(pl->config, pl->cur_link_an_mode,
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state->interface);
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@@ -814,8 +831,10 @@ static void phylink_major_config(struct
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/* If we have a new PCS, switch to the new PCS after preparing the MAC
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* for the change.
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*/
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- if (pcs)
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- phylink_set_pcs(pl, pcs);
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+ if (pcs_changed) {
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+ pl->pcs = pcs;
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+ pl->pcs_ops = pcs->ops;
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+ }
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phylink_mac_config(pl, state);
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@@ -841,6 +860,8 @@ static void phylink_major_config(struct
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phylink_err(pl, "mac_finish failed: %pe\n",
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ERR_PTR(err));
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}
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+
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+ phylink_pcs_poll_start(pl);
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}
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/*
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