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[5/5] netdev: bfin_mac: disable hardware checksum if writeback cache is enabled

Message ID 1288078827-17495-5-git-send-email-vapier@gentoo.org
State Not Applicable, archived
Delegated to: David Miller
Headers show

Commit Message

Mike Frysinger Oct. 26, 2010, 7:40 a.m. UTC 
From: Sonic Zhang <sonic.zhang@analog.com>

With writeback caches, corrupted RX packets will be sent up the stack
without any error markings.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 drivers/net/bfin_mac.h |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/bfin_mac.h b/drivers/net/bfin_mac.h
index c1a0d66..f8559ac 100644
--- a/drivers/net/bfin_mac.h
+++ b/drivers/net/bfin_mac.h
@@ -17,7 +17,14 @@ 
 #include <linux/etherdevice.h>
 #include <linux/bfin_mac.h>
 
+/*
+ * Disable hardware checksum for bug #5600 if writeback cache is
+ * enabled. Otherwize, corrupted RX packet will be sent up stack
+ * without error mark.
+ */
+#ifndef CONFIG_BFIN_EXTMEM_WRITEBACK
 #define BFIN_MAC_CSUM_OFFLOAD
+#endif
 
 #define TX_RECLAIM_JIFFIES (HZ / 5)