ibm_newemac: Increase MDIO timeouts

This patch doubles the MDIO timeouts in EMAC as there are field
cases where they are two short to communicate with some PHYs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index 490d690b5e7ffa5c242c51fb58c6b9266ca175f0..5d2108c5ac7c872d32409de44edc22f07bf5620e 100644 (file)
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -738,7 +738,7 @@ static int __emac_mdio_read(struct emac_instance *dev, u8 id, u8 reg)
                rgmii_get_mdio(dev->rgmii_dev, dev->rgmii_port);
 
        /* Wait for management interface to become idle */
-       n = 10;
+       n = 20;
        while (!emac_phy_done(dev, in_be32(&p->stacr))) {
                udelay(1);
                if (!--n) {
@@ -763,7 +763,7 @@ static int __emac_mdio_read(struct emac_instance *dev, u8 id, u8 reg)
        out_be32(&p->stacr, r);
 
        /* Wait for read to complete */
-       n = 100;
+       n = 200;
        while (!emac_phy_done(dev, (r = in_be32(&p->stacr)))) {
                udelay(1);
                if (!--n) {
@@ -810,7 +810,7 @@ static void __emac_mdio_write(struct emac_instance *dev, u8 id, u8 reg,
                rgmii_get_mdio(dev->rgmii_dev, dev->rgmii_port);
 
        /* Wait for management interface to be idle */
-       n = 10;
+       n = 20;
        while (!emac_phy_done(dev, in_be32(&p->stacr))) {
                udelay(1);
                if (!--n) {
@@ -836,7 +836,7 @@ static void __emac_mdio_write(struct emac_instance *dev, u8 id, u8 reg,
        out_be32(&p->stacr, r);
 
        /* Wait for write to complete */
-       n = 100;
+       n = 200;
        while (!emac_phy_done(dev, in_be32(&p->stacr))) {
                udelay(1);
                if (!--n) {