diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index 670c093ed25f..5c28ca7380ff 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -60,7 +60,8 @@
 #include <asm/uaccess.h>  
 #include <asm/string.h>  
 #include <asm/byteorder.h>  
-#include <linux/vmalloc.h>  
+#include <linux/vmalloc.h>
+#include <linux/jiffies.h>
 #include "iphase.h"		  
 #include "suni.h"		  
 #define swap(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))  
@@ -189,7 +190,7 @@ static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
   int ltimeout;
 
   ia_hack_tcq (dev);
-  if(((jiffies - timer)>50)||((dev->ffL.tcq_rd==dev->host_tcq_wr))){      
+  if((time_after(jiffies,timer+50)) || ((dev->ffL.tcq_rd==dev->host_tcq_wr))) {
      timer = jiffies; 
      i=0;
      while (i < dev->num_tx_desc) {
@@ -1225,7 +1226,7 @@ static void rx_intr(struct atm_dev *dev)
         iadev->rx_tmp_jif = jiffies; 
         iadev->rxing = 0;
      } 
-     else if (((jiffies - iadev->rx_tmp_jif) > 50) && 
+     else if ((time_after(jiffies, iadev->rx_tmp_jif + 50)) &&
                ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
         for (i = 1; i <= iadev->num_rx_desc; i++)
                free_desc(dev, i);