[PATCH] spidernet: poor network performance

Correct a problem seen on later kernels running the NetPIPE application.
Specifically, NetPIPE would begin running very slowly at the 1533 packet
size.  It was determined that Spidernet slowed with an idle DMA engine.

Signed-off-by: James K Lewis <jklewis@us.ibm.com>
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 5 insertions, 5 deletions

diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
index 9dd282346e1c..cef7e6671c49 100644
--- a/drivers/net/spider_net.c
+++ b/drivers/net/spider_net.c
@@ -1633,7 +1633,7 @@ spider_net_enable_card(struct spider_net_card *card)
                              SPIDER_NET_INT2_MASK_VALUE);
 
         spider_net_write_reg(card, SPIDER_NET_GDTDMACCNTR,
-                             SPIDER_NET_GDTBSTA | SPIDER_NET_GDTDCEIDIS);
+                             SPIDER_NET_GDTBSTA);
 }
 
 /**
diff --git a/drivers/net/spider_net.h b/drivers/net/spider_net.h
index cb85cbb3d92d..3e196df29790 100644
--- a/drivers/net/spider_net.h
+++ b/drivers/net/spider_net.h
@@ -24,7 +24,7 @@
 #ifndef _SPIDER_NET_H
 #define _SPIDER_NET_H
 
-#define VERSION "1.5 A"
+#define VERSION "1.6 A"
 
 #include "sungem_phy.h"
 
@@ -217,8 +217,7 @@ extern char spider_net_driver_name[];
 #define SPIDER_NET_GDTBSTA             0x00000300
 #define SPIDER_NET_GDTDCEIDIS          0x00000002
 #define SPIDER_NET_DMA_TX_VALUE        SPIDER_NET_TX_DMA_EN | \
-                                       SPIDER_NET_GDTBSTA | \
-                                       SPIDER_NET_GDTDCEIDIS
+                                       SPIDER_NET_GDTBSTA
 
 #define SPIDER_NET_DMA_TX_FEND_VALUE    0x00030003
 
@@ -328,7 +327,8 @@ enum spider_net_int2_status {
         SPIDER_NET_GRISPDNGINT
 };
 
-#define SPIDER_NET_TXINT        ( (1 << SPIDER_NET_GDTFDCINT) )
+#define SPIDER_NET_TXINT        ( (1 << SPIDER_NET_GDTFDCINT) | \
+                             (1 << SPIDER_NET_GDTDCEINT) )
 
 /* We rely on flagged descriptor interrupts */
 #define SPIDER_NET_RXINT        ( (1 << SPIDER_NET_GDAFDCINT) )