drivers/net/arcnet/arcnet.c: use time_* macros

The functions time_before, time_before_eq, time_after, and time_after_eq are
more robust for comparing jiffies against other values.

So use the time_after() macro, defined in linux/jiffies.h, which deals with
wrapping correctly.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: S.Caglar Onur <caglar@pardus.org.tr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 5 insertions, 4 deletions

diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index c59c8067de99..bdc4c0bb56d9 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -940,7 +940,7 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id)
 
                         /* is the RECON info empty or old? */
                         if (!lp->first_recon || !lp->last_recon ||
-                            jiffies - lp->last_recon > HZ * 10) {
+                            time_after(jiffies, lp->last_recon + HZ * 10)) {
                                 if (lp->network_down)
                                         BUGMSG(D_NORMAL, "reconfiguration detected: cabling restored?\n");
                                 lp->first_recon = lp->last_recon = jiffies;
@@ -974,7 +974,8 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id)
                                         lp->num_recons = 1;
                                 }
                         }
-                } else if (lp->network_down && jiffies - lp->last_recon > HZ * 10) {
+                } else if (lp->network_down &&
+                                time_after(jiffies, lp->last_recon + HZ * 10)) {
                         if (lp->network_down)
                                 BUGMSG(D_NORMAL, "cabling restored?\n");
                         lp->first_recon = lp->last_recon = 0;
diff --git a/include/linux/arcdevice.h b/include/linux/arcdevice.h
index fde675872c56..a1916078fd08 100644
--- a/include/linux/arcdevice.h
+++ b/include/linux/arcdevice.h
@@ -283,8 +283,8 @@ struct arcnet_local {
         int next_buf, first_free_buf;
 
         /* network "reconfiguration" handling */
-        time_t first_recon,     /* time of "first" RECON message to count */
-                last_recon;     /* time of most recent RECON */
+        unsigned long first_recon; /* time of "first" RECON message to count */
+        unsigned long last_recon;  /* time of most recent RECON */
         int num_recons;         /* number of RECONs between first and last. */
         bool network_down;      /* do we think the network is down? */