From: Michael Hennerich <michael.hennerich@analog.com>
Date: Tue, 30 Oct 2007 09:04:09 +0000 (+0800)
Subject: Blackfin EMAC driver: Fix Ethernet communication bug (dupliated and lost packets)
X-Git-Tag: v2.6.24-rc2~75^2~7
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ea10b1a545562658b0eccb24b0feda3f77d4d36;p=linux-2.6

Blackfin EMAC driver: Fix Ethernet communication bug (dupliated and lost packets)

Fix Ethernet communication bug(dupliated and lost packets)
in RMII PHY mode- dont call mac_disable and mac_enable during
10/100 REFCLK changes - mac_enable screws up the DMA descriptor chain

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index 53fe7ded5d..084acfd6fc 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -371,7 +371,6 @@ static void bf537_adjust_link(struct net_device *dev)
 		if (phydev->speed != lp->old_speed) {
 #if defined(CONFIG_BFIN_MAC_RMII)
 			u32 opmode = bfin_read_EMAC_OPMODE();
-			bf537mac_disable();
 			switch (phydev->speed) {
 			case 10:
 				opmode |= RMII_10;
@@ -386,7 +385,6 @@ static void bf537_adjust_link(struct net_device *dev)
 				break;
 			}
 			bfin_write_EMAC_OPMODE(opmode);
-			bf537mac_enable();
 #endif
 
 			new_state = 1;