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[PATCH 2.6.9-rc4-bk3-netdev3 1/3] r8169: always clean Tx desc

To: jgarzik@xxxxxxxxx
Subject: [PATCH 2.6.9-rc4-bk3-netdev3 1/3] r8169: always clean Tx desc
From: Francois Romieu <romieu@xxxxxxxxxxxxx>
Date: Tue, 19 Oct 2004 01:08:23 +0200
Cc: netdev@xxxxxxxxxxx
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mutt/1.4.1i
rtl8169_unmap_tx_skb() can not assume that a Tx ring descriptor belongs
to the host as it can be issued during rtl8169_tx_clear() as a part of
a recovery process (during Tx timeout for instance).

Simple fix: always clean the relevant descriptor entry.

Acked-by: Francois Romieu <romieu@xxxxxxxxxxxxx>
Signed-off-by: Jon Mason <jdmason@xxxxxxxxxx>

diff -puN drivers/net/r8169.c~r8169-225 drivers/net/r8169.c
--- linux-2.6.9/drivers/net/r8169.c~r8169-225   2004-10-18 22:13:54.000000000 
+0200
+++ linux-2.6.9-fr/drivers/net/r8169.c  2004-10-18 23:31:21.000000000 +0200
@@ -1679,6 +1679,7 @@ static void rtl8169_unmap_tx_skb(struct 
        unsigned int len = tx_skb->len;
 
        pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
+       desc->opts1 = 0x00;
        desc->opts2 = 0x00;
        desc->addr = 0x00;
        tx_skb->len = 0;

_

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