[PATCH] drivers/net/hamradio/baycom_epp.c: use time_before()

From: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>

It deals with wrapping correctly and is nicer to read.

Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/net/hamradio/baycom_epp.c
===================================================================
--- linux-kj.orig/drivers/net/hamradio/baycom_epp.c	2006-01-18 02:22:23.000000000 +0300
+++ linux-kj/drivers/net/hamradio/baycom_epp.c	2006-01-18 16:41:26.000000000 +0300
@@ -905,7 +905,7 @@ static int epp_open(struct net_device *d
 	/* autoprobe baud rate */
 	tstart = jiffies;
 	i = 0;
-	while ((signed)(jiffies-tstart-HZ/3) < 0) {
+	while (time_before(jiffies, tstart + HZ/3)) {
 		if (pp->ops->epp_read_addr(pp, &stat, 1, 0) != 1)
 			goto epptimeout;
 		if ((stat & (EPP_NRAEF|EPP_NRHF)) == EPP_NRHF) {