[PATCH] Use time_before in hamradio drivers

Use of time_before() macro, defined at linux/jiffies.h, which deal with
wrapping correctly and are nicer to read.
Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>

 baycom_epp.c     |    3 ++-
 baycom_par.c     |    3 ++-
 baycom_ser_fdx.c |    3 ++-
 baycom_ser_hdx.c |    3 ++-
 mkiss.c          |    3 ++-
 5 files changed, 10 insertions(+), 5 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/hamradio/baycom_epp.c

@@ -54,6 +54,7 @@
 #include <linux/kmod.h>
 #include <linux/hdlcdrv.h>
 #include <linux/baycom.h>
+#include <linux/jiffies.h>
 #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
 /* prototypes for ax25_encapsulate and ax25_rebuild_header */
 #include <net/ax25.h> 
@@ -287,7 +288,7 @@ static inline void baycom_int_freq(struct baycom_state *bc)
 	 * measure the interrupt frequency
 	 */
 	bc->debug_vals.cur_intcnt++;
-	if ((cur_jiffies - bc->debug_vals.last_jiffies) >= HZ) {
+	if (time_after_eq(cur_jiffies, bc->debug_vals.last_jiffies + HZ)) {
 		bc->debug_vals.last_jiffies = cur_jiffies;
 		bc->debug_vals.last_intcnt = bc->debug_vals.cur_intcnt;
 		bc->debug_vals.cur_intcnt = 0;

drivers/net/hamradio/baycom_par.c

@@ -84,6 +84,7 @@
 #include <linux/baycom.h>
 #include <linux/parport.h>
 #include <linux/bitops.h>
+#include <linux/jiffies.h>
 
 #include <asm/bug.h>
 #include <asm/system.h>
@@ -165,7 +166,7 @@ static void __inline__ baycom_int_freq(struct baycom_state *bc)
 	 * measure the interrupt frequency
 	 */
 	bc->debug_vals.cur_intcnt++;
-	if ((cur_jiffies - bc->debug_vals.last_jiffies) >= HZ) {
+	if (time_after_eq(cur_jiffies, bc->debug_vals.last_jiffies + HZ)) {
 		bc->debug_vals.last_jiffies = cur_jiffies;
 		bc->debug_vals.last_intcnt = bc->debug_vals.cur_intcnt;
 		bc->debug_vals.cur_intcnt = 0;

drivers/net/hamradio/baycom_ser_fdx.c

@@ -79,6 +79,7 @@
 #include <asm/io.h>
 #include <linux/hdlcdrv.h>
 #include <linux/baycom.h>
+#include <linux/jiffies.h>
 
 /* --------------------------------------------------------------------- */
 
@@ -159,7 +160,7 @@ static inline void baycom_int_freq(struct baycom_state *bc)
 	 * measure the interrupt frequency
 	 */
 	bc->debug_vals.cur_intcnt++;
-	if ((cur_jiffies - bc->debug_vals.last_jiffies) >= HZ) {
+	if (time_after_eq(cur_jiffies, bc->debug_vals.last_jiffies + HZ)) {
 		bc->debug_vals.last_jiffies = cur_jiffies;
 		bc->debug_vals.last_intcnt = bc->debug_vals.cur_intcnt;
 		bc->debug_vals.cur_intcnt = 0;

drivers/net/hamradio/baycom_ser_hdx.c

@@ -69,6 +69,7 @@
 #include <asm/io.h>
 #include <linux/hdlcdrv.h>
 #include <linux/baycom.h>
+#include <linux/jiffies.h>
 
 /* --------------------------------------------------------------------- */
 
@@ -150,7 +151,7 @@ static inline void baycom_int_freq(struct baycom_state *bc)
 	 * measure the interrupt frequency
 	 */
 	bc->debug_vals.cur_intcnt++;
-	if ((cur_jiffies - bc->debug_vals.last_jiffies) >= HZ) {
+	if (time_after_eq(cur_jiffies, bc->debug_vals.last_jiffies + HZ)) {
 		bc->debug_vals.last_jiffies = cur_jiffies;
 		bc->debug_vals.last_intcnt = bc->debug_vals.cur_intcnt;
 		bc->debug_vals.cur_intcnt = 0;

drivers/net/hamradio/mkiss.c

@@ -46,6 +46,7 @@
 #include <linux/etherdevice.h>
 #include <linux/skbuff.h>
 #include <linux/if_arp.h>
+#include <linux/jiffies.h>
 
 #include <net/ax25.h>
 
@@ -429,7 +430,7 @@ static int ax_xmit(struct sk_buff *skb, struct net_device *dev)
 		 * May be we must check transmitter timeout here ?
 		 *      14 Oct 1994 Dmitry Gorodchanin.
 		 */
-		if (jiffies - dev->trans_start  < 20 * HZ) {
+		if (time_before(jiffies, dev->trans_start + 20 * HZ)) {
 			/* 20 sec timeout not reached */
 			return 1;
 		}