drivers/net/hamradio/mkiss.c : Use of time_before macro

Use of time_before() macro, defined at linux/jiffies.h, which deal with wrapping correctly and are nicer to read.

--- linux/drivers/net/hamradio/mkiss.c 2005-07-07 19:11:51.000000000 -0300
+++ linux-kj/drivers/net/hamradio/mkiss.c 2005-07-07
22:56:21.650591984 -0300
@@ -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 @@
* 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;
                }

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