net: ethernet: sun: use time_is_before_jiffies() instead of open coding it

Use the helper function time_is_{before,after}_jiffies() to improve
code readability.

Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
index dba9f12efa1cfc6c3d8597e8a9140119af35c6b4..947a76a788c7eea2492d04a29f5c0cdaaf2e00e3 100644 (file)
--- a/drivers/net/ethernet/sun/cassini.c
+++ b/drivers/net/ethernet/sun/cassini.c
@@ -88,6 +88,7 @@
 #include <asm/io.h>
 #include <asm/byteorder.h>
 #include <linux/uaccess.h>
+#include <linux/jiffies.h>
 
 #define cas_page_map(x)      kmap_atomic((x))
 #define cas_page_unmap(x)    kunmap_atomic((x))
@@ -4063,8 +4064,8 @@ static void cas_link_timer(struct timer_list *t)
 
        if (link_transition_timeout != 0 &&
            cp->link_transition_jiffies_valid &&
-           ((jiffies - cp->link_transition_jiffies) >
-             (link_transition_timeout))) {
+           time_is_before_jiffies(cp->link_transition_jiffies +
+             link_transition_timeout)) {
                /* One-second counter so link-down workaround doesn't
                 * cause resets to occur so fast as to fool the switch
                 * into thinking the link is down.