[PATCH] FCC Ethernet startup crash

["Rune Torgersen" <runet@innovsys.com>]

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This patch fizxes a race condition in the FCC ethernet driver, where the
ethernet driver starts to receive packets before the IP layer is
initialized.

This pathch is originally from Stefan Nickl <Stefan.Nickl@kontron.com>
for the linuxppc2.4 three, redone for 2.6 and tested.

Signed-off-by: Rune Torgersen <runet@innovsys.com>


Rune Torgersen
System Developer
Innovative Systems LLC
1000 Innovative Drive
Mitchell, SD 57301
Ph: 605-995-6120
www.innovsys.com

[-- Attachment #2: fcc_enet_startup_crash.patch --]
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===== arch/ppc/8260_io/fcc_enet.c 1.24 vs edited =====
--- 1.24/arch/ppc/8260_io/fcc_enet.c	2005-03-18 14:51:31 -06:00
+++ edited/arch/ppc/8260_io/fcc_enet.c	2005-04-07 14:13:31 -05:00
@@ -2158,16 +2158,6 @@
 	*(volatile uint *)(BCSR_ADDR + 12) &= ~BCSR3_FETHIEN2;
 	*(volatile uint *)(BCSR_ADDR + 12) |=  BCSR3_FETH2_RST;
 #endif
-
-#if defined(CONFIG_USE_MDIO) || defined(CONFIG_TQM8260)
-	/* start in full duplex mode, and negotiate speed
-	 */
-	fcc_restart (dev, 1);
-#else
-	/* start in half duplex mode
-	 */
-	fcc_restart (dev, 0);
-#endif
 }
 
 #ifdef	CONFIG_USE_MDIO
@@ -2367,6 +2357,16 @@
 fcc_enet_open(struct net_device *dev)
 {
 	struct fcc_enet_private *fep = dev->priv;
+
+#if defined(CONFIG_USE_MDIO) || defined(CONFIG_TQM8260)
+	/* start in full duplex mode, and negotiate speed
+	 */
+	fcc_restart (dev, 1);
+#else
+	/* start in half duplex mode
+	 */
+	fcc_restart (dev, 0);
+#endif
 
 #ifdef	CONFIG_USE_MDIO
 	fep->sequence_done = 0;