2022-07-25 00:31:20 +00:00
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From 0a9f0794d9bd67e590a9488afe87fbb0419d9539 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: Thu, 9 Dec 2021 13:11:38 +0000
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Subject: [PATCH] net: dsa: mark DSA phylink as legacy_pre_march2020
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The majority of DSA drivers do not make use of the PCS support, and
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thus operate in legacy mode. In order to preserve this behaviour in
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future, we need to set the legacy_pre_march2020 flag so phylink knows
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this may require the legacy calls.
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There are some DSA drivers that do make use of PCS support, and these
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will continue operating as before - legacy_pre_march2020 will not
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prevent split-PCS support enabling the newer phylink behaviour.
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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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net/dsa/port.c | 7 +++++++
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1 file changed, 7 insertions(+)
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--- a/net/dsa/port.c
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+++ b/net/dsa/port.c
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2022-11-26 11:51:56 +00:00
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@@ -1126,6 +1126,13 @@ int dsa_port_phylink_create(struct dsa_p
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2022-07-25 00:31:20 +00:00
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if (err)
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mode = PHY_INTERFACE_MODE_NA;
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+ /* Presence of phylink_mac_link_state or phylink_mac_an_restart is
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+ * an indicator of a legacy phylink driver.
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+ */
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+ if (ds->ops->phylink_mac_link_state ||
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+ ds->ops->phylink_mac_an_restart)
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+ dp->pl_config.legacy_pre_march2020 = true;
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+
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if (ds->ops->phylink_get_caps)
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ds->ops->phylink_get_caps(ds, dp->index, &dp->pl_config);
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