netdev - [PATCH] bfin_mac: Make the MDIO polling faster

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Date:	Tue, 29 Jan 2008 14:28:51 +0200 (EET)
From:	Kalle Pokki <kalle.pokki@....com>
To:	netdev@...r.kernel.org, Bryan Wu <bryan.wu@...log.com>
Subject: [PATCH] bfin_mac: Make the MDIO polling faster

The poll routine always got 10 ms penalty when called immediately
after starting the transfer. The MDIO transfer takes 25.6 us at the
nominal 2.5 MHz, so MAX_TIMEOUT_CNT being 500 is still big enough.
---
 drivers/net/bfin_mac.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index c199633..d2e6813 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -296,7 +296,7 @@ static void mdio_poll(void)
 
 	/* poll the STABUSY bit */
 	while ((bfin_read_EMAC_STAADD()) & STABUSY) {
-		mdelay(10);
+		udelay(1);
 		if (timeout_cnt-- < 0) {
 			printk(KERN_ERR DRV_NAME
 			": wait MDC/MDIO transaction to complete timeout\n");
-- 
1.4.4.2

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