ColdFire: Fix FEC transmit issue for MCF5275

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

diff --git a/drivers/net/mcffec.c b/drivers/net/mcffec.c
index 3b812585b76f58d83dd640e5493fd21a7dea4f4c..71d19608edeb8c93af200240126ee8197a546343 100644 (file)
--- a/drivers/net/mcffec.c
+++ b/drivers/net/mcffec.c
@@ -166,6 +166,13 @@ int fec_send(struct eth_device *dev, volatile void *packet, int length)
        /* Activate transmit Buffer Descriptor polling */
        fecp->tdar = 0x01000000;        /* Descriptor polling active    */
 
+       /* FEC fix for MCF5275, FEC unable to initial transmit data packet.
+        * A nop will ensure the descriptor polling active completed.
+        */
+#ifdef CONFIG_M5275
+       __asm__ ("nop");
+#endif
+
 #ifdef CFG_UNIFY_CACHE
        icache_invalid();
 #endif