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net: fec: Adjust ENET MDIO timeouts

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On extensive NFS boots on a mx6qsabrelite board it was noted that "FEC: MDIO read timeout" were occuring,
which caused failure on loading the FEC driver.

The original FEC_MII_TIMEOUT was set to 1 ms, which is too low when passed to the usecs_to_jiffies macro.

On ARM one jiffy is 10ms, so use a timeout of 30ms, which corresponds to 3 jiffies.

After running extensive NFS boots, the MDIO timeouts do not occur anymore with this change.

Signed-off-by: Rogerio Pimentel <rogerio.pimentel@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rogerio Pimentel 2011-12-27 14:07:37 -05:00 committed by David S. Miller
parent c0d2b8376a
commit c3b084c24c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/freescale/fec.c
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@ -255,7 +255,7 @@ struct fec_enet_private {
#define FEC_MMFR_TA (2 << 16)
#define FEC_MMFR_DATA(v) (v & 0xffff)
#define FEC_MII_TIMEOUT 1000 /* us */
#define FEC_MII_TIMEOUT 30000 /* us */
/* Transmitter timeout */
#define TX_TIMEOUT (2 * HZ)