[PATCH] USB: ati_remote: use time_before() 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 9 insertions, 8 deletions

diff --git a/drivers/usb/input/ati_remote.c b/drivers/usb/input/ati_remote.c
index b78a4d81b0a3..f7bdc506e613 100644
--- a/drivers/usb/input/ati_remote.c
+++ b/drivers/usb/input/ati_remote.c
@@ -96,6 +96,7 @@
 #include <linux/usb.h>
 #include <linux/usb_input.h>
 #include <linux/wait.h>
+#include <linux/jiffies.h>
 
 /*
  * Module and Version Information, Module Parameters
@@ -471,7 +472,7 @@ static void ati_remote_input_report(struct urb *urb, struct pt_regs *regs)
                 /* Filter duplicate events which happen "too close" together. */
                 if ((ati_remote->old_data[0] == data[1]) &&
                         (ati_remote->old_data[1] == data[2]) &&
-                        ((ati_remote->old_jiffies + FILTER_TIME) > jiffies)) {
+                        time_before(jiffies, ati_remote->old_jiffies + FILTER_TIME)) {
                         ati_remote->repeat_count++;
                 } else {
                         ati_remote->repeat_count = 0;
@@ -506,16 +507,16 @@ static void ati_remote_input_report(struct urb *urb, struct pt_regs *regs)
          * pad down, so we increase acceleration, ramping up over two seconds to
          * a maximum speed.  The acceleration curve is #defined above.
          */
-        if ((jiffies - ati_remote->old_jiffies) > (HZ >> 2)) {
+        if (time_after(jiffies, ati_remote->old_jiffies + (HZ >> 2))) {
                 acc = 1;
                 ati_remote->acc_jiffies = jiffies;
         }
-        else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 3))  acc = accel[0];
-        else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 2))  acc = accel[1];
-        else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 1))  acc = accel[2];
-        else if ((jiffies - ati_remote->acc_jiffies) < HZ )        acc = accel[3];
-        else if ((jiffies - ati_remote->acc_jiffies) < HZ+(HZ>>1)) acc = accel[4];
-        else if ((jiffies - ati_remote->acc_jiffies) < (HZ << 1))  acc = accel[5];
+        else if (time_before(jiffies, ati_remote->acc_jiffies + (HZ >> 3)))  acc = accel[0];
+        else if (time_before(jiffies, ati_remote->acc_jiffies + (HZ >> 2)))  acc = accel[1];
+        else if (time_before(jiffies, ati_remote->acc_jiffies + (HZ >> 1)))  acc = accel[2];
+        else if (time_before(jiffies, ati_remote->acc_jiffies + HZ))         acc = accel[3];
+        else if (time_before(jiffies, ati_remote->acc_jiffies + HZ+(HZ>>1))) acc = accel[4];
+        else if (time_before(jiffies, ati_remote->acc_jiffies + (HZ << 1)))  acc = accel[5];
         else acc = accel[6];
 
         input_regs(dev, regs);