[PATCH] drivers/block/*: use time_after() and friends

They deal with wrapping correctly and are nicer to read.

Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 49c7cd5..45bcda5 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -41,6 +41,7 @@
 #include <linux/timer.h>
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/jiffies.h>
 #include <linux/random.h>
 #include <asm/io.h>
 #include <asm/uaccess.h>
@@ -3654,8 +3655,8 @@
 	      (NewEnquiry->EventLogSequenceNumber !=
 	       OldEnquiry->EventLogSequenceNumber) ||
 	      Controller->MonitoringTimerCount == 0 ||
-	      (jiffies - Controller->SecondaryMonitoringTime
-	       >= DAC960_SecondaryMonitoringInterval))
+	      time_after_eq(jiffies, Controller->SecondaryMonitoringTime
+	       + DAC960_SecondaryMonitoringInterval))
 	    {
 	      Controller->V1.NeedLogicalDriveInformation = true;
 	      Controller->V1.NewEventLogSequenceNumber =
@@ -5640,8 +5641,8 @@
       unsigned int StatusChangeCounter =
 	Controller->V2.HealthStatusBuffer->StatusChangeCounter;
       boolean ForceMonitoringCommand = false;
-      if (jiffies - Controller->SecondaryMonitoringTime
-	  > DAC960_SecondaryMonitoringInterval)
+      if (time_after(jiffies, Controller->SecondaryMonitoringTime
+	  + DAC960_SecondaryMonitoringInterval))
 	{
 	  int LogicalDriveNumber;
 	  for (LogicalDriveNumber = 0;
@@ -5669,8 +5670,8 @@
 	   ControllerInfo->ConsistencyChecksActive +
 	   ControllerInfo->RebuildsActive +
 	   ControllerInfo->OnlineExpansionsActive == 0 ||
-	   jiffies - Controller->PrimaryMonitoringTime
-	   < DAC960_MonitoringTimerInterval) &&
+	   time_before(jiffies, Controller->PrimaryMonitoringTime
+	   + DAC960_MonitoringTimerInterval)) &&
 	  !ForceMonitoringCommand)
 	{
 	  Controller->MonitoringTimer.expires =
@@ -5807,8 +5808,8 @@
       Controller->ProgressBufferLength = Length;
       if (Controller->EphemeralProgressMessage)
 	{
-	  if (jiffies - Controller->LastProgressReportTime
-	      >= DAC960_ProgressReportingInterval)
+	  if (time_after_eq(jiffies, Controller->LastProgressReportTime
+	      + DAC960_ProgressReportingInterval))
 	    {
 	      printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
 		     Controller->ControllerNumber, Buffer);