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Date: Mon, 29 Feb 2016 14:27:39 +0100 From: Alexandre TORGUE <alexandre.torgue@...com> To: <netdev@...r.kernel.org> CC: <peppe.cavallaro@...com>, <fabrice.gasnier@...com>, <maxime.coquelin@...com> Subject: [PATCH v3 13/17] stmmac: do not poll phy handler when attach a switch From: Giuseppe Cavallaro <peppe.cavallaro@...com> This patch avoids to call the stmmac_adjust_link when the driver is connected to a switch by using the FIXED_PHY support. Prior this patch the phydev->irq was set as PHY_POLL so periodically the phy handler was invoked spending useless time because the link cannot actually change. Note that the stmmac_adjust_link will be called just one time and this guarantees that the ST glue logic will be setup according to the mode and speed fixed. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@...com> Signed-off-by: Alexandre TORGUE <alexandre.torgue@...com> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 90b2612..eab7ac0 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -866,6 +866,11 @@ static int stmmac_init_phy(struct net_device *dev) phy_disconnect(phydev); return -ENODEV; } + + /* If attached to a switch, there is no reason to poll phy handler */ + if (!strcmp(priv->plat->phy_bus_name, "fixed")) + phydev->irq = PHY_IGNORE_INTERRUPT; + pr_debug("stmmac_init_phy: %s: attached to PHY (UID 0x%x)" " Link = %d\n", dev->name, phydev->phy_id, phydev->link); -- 1.9.1
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