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54 lines
1.4 KiB
Diff
54 lines
1.4 KiB
Diff
From: Russell King <rmk+kernel@armlinux.org.uk>
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Date: Thu, 5 Jan 2017 12:21:09 +0000
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Subject: [PATCH] net: phy: restart phy autonegotiation after EEE
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advertisment change
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When the EEE advertisment is changed, we should restart autonegotiation
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to update the link partner with the new EEE settings. Add this trigger
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but only if the advertisment has changed.
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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/phy.c
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+++ b/drivers/net/phy/phy.c
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@@ -1352,19 +1352,36 @@ EXPORT_SYMBOL(phy_ethtool_get_eee);
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*/
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int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
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{
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- int cap, adv;
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+ int cap, old_adv, adv, ret;
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/* Get Supported EEE */
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cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
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if (cap < 0)
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return cap;
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+ old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
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+ if (old_adv < 0)
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+ return old_adv;
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+
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adv = ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap;
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/* Mask prohibited EEE modes */
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adv &= ~phydev->eee_broken_modes;
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- return phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
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+ if (old_adv != adv) {
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+ ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
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+ if (ret < 0)
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+ return ret;
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+
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+ /* Restart autonegotiation so the new modes get sent to the
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+ * link partner.
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+ */
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+ ret = phy_restart_aneg(phydev);
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+ if (ret < 0)
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+ return ret;
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+ }
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+
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+ return 0;
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}
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EXPORT_SYMBOL(phy_ethtool_set_eee);
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