From da1aa0fd06f6a977938ee248d732faf16ae9b892 Mon Sep 17 00:00:00 2001
From: Alfred Perlstein <alfred@FreeBSD.org>
Date: Tue, 27 Mar 2001 05:03:49 +0000
Subject: limit the amount of retries when sending data to prevent lockups.

---
 sys/dev/wi/if_wi.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'sys')

diff --git a/sys/dev/wi/if_wi.c b/sys/dev/wi/if_wi.c
index de2de2a7f483..9e27254fda50 100644
--- a/sys/dev/wi/if_wi.c
+++ b/sys/dev/wi/if_wi.c
@@ -952,8 +952,10 @@ static int wi_write_data(sc, id, off, buf, len)
 {
 	int			i;
 	u_int16_t		*ptr;
-
 #ifdef WI_HERMES_AUTOINC_WAR
+	int			retries;
+
+	retries = WI_TIMEOUT >> 4;
 again:
 #endif
 
@@ -973,7 +975,12 @@ again:
 
 	if (CSR_READ_2(sc, WI_DATA0) != 0x1234 ||
 	    CSR_READ_2(sc, WI_DATA0) != 0x5678)
-		goto again;
+	{
+		if (--retries >= 0)
+			goto again;
+		device_printf(sc->dev, "wi_write_data device timeout\n");
+		return (EIO);
+	}
 #endif
 
 	return(0);
-- 
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