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stmmac: do not poll phy handler when attach a switch 

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@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Giuseppe Cavallaro 2016-02-29 14:27:39 +01:00 committed by David S. Miller
parent 0e80bdc9a7
commit 8e99fc5f88
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -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);