From fe79745507593941adb44a6b2e392645c54ca1c2 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Wed, 7 Mar 2007 16:37:38 +0000
Subject: [PATCH] z85230: Fix FIFO handling
We must exit immediately on a FIFO fill not take the end of packet path
otherwise each underrun in PIO transmit mode causes a runt packet and the
data is lost.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
drivers/net/wan/z85230.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wan/z85230.c b/drivers/net/wan/z85230.c
index 8dbcf83bb5f3..8b4540bfc1b0 100644
--- a/drivers/net/wan/z85230.c
+++ b/drivers/net/wan/z85230.c
@@ -407,7 +407,7 @@ static void z8530_tx(struct z8530_channel *c)
while(c->txcount) {
/* FIFO full ? */
if(!(read_zsreg(c, R0)&4))
- break;
+ return;
c->txcount--;
/*
* Shovel out the byte
--
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