Commit c3b084c2 authored Dec 27, 2011 by Rogerio Pimentel Committed by David S. Miller Dec 28, 2011

net: fec: Adjust ENET MDIO timeouts

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>

parent c0d2b837

drivers/net/ethernet/freescale/fec.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)