media: rc: Replace timeval with ktime_t in imon.c

This patch changes the 32-bit time type (timeval) to the 64-bit one
(ktime_t), since 32-bit time types will break in the year 2038.

I use ktime_t instead of all uses of timeval in imon.c

This patch also changes do_gettimeofday() to ktime_get() accordingly,
since ktime_get returns a ktime_t, but do_gettimeofday returns a
struct timeval, and the other reason is that ktime_get() uses
the monotonic clock.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index eb943e8..c7a19a8 100644 (file)
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -27,6 +27,7 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/ktime.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
@@ -37,7 +38,6 @@
 #include <linux/usb/input.h>
 #include <media/rc-core.h>
 
-#include <linux/time.h>
 #include <linux/timer.h>
 
 #define MOD_AUTHOR     "Jarod Wilson <jarod@wilsonet.com>"
@@ -1201,16 +1201,16 @@ static inline int tv2int(const struct timeval *a, const struct timeval *b)
  */
 static int stabilize(int a, int b, u16 timeout, u16 threshold)
 {
-       struct timeval ct;
-       static struct timeval prev_time = {0, 0};
-       static struct timeval hit_time  = {0, 0};
+       ktime_t ct;
+       static ktime_t prev_time;
+       static ktime_t hit_time;
        static int x, y, prev_result, hits;
        int result = 0;
-       int msec, msec_hit;
+       long msec, msec_hit;
 
-       do_gettimeofday(&ct);
-       msec = tv2int(&ct, &prev_time);
-       msec_hit = tv2int(&ct, &hit_time);
+       ct = ktime_get();
+       msec = ktime_ms_delta(ct, prev_time);
+       msec_hit = ktime_ms_delta(ct, hit_time);
 
        if (msec > 100) {
                x = 0;
@@ -1688,9 +1688,9 @@ static void imon_incoming_scancode(struct imon_context *ictx,
        u32 kc;
        u64 scancode;
        int press_type = 0;
-       int msec;
-       struct timeval t;
-       static struct timeval prev_time = { 0, 0 };
+       long msec;
+       ktime_t t;
+       static ktime_t prev_time;
        u8 ktype;
 
        /* filter out junk data on the older 0xffdc imon devices */
@@ -1783,10 +1783,10 @@ static void imon_incoming_scancode(struct imon_context *ictx,
        /* Only panel type events left to process now */
        spin_lock_irqsave(&ictx->kc_lock, flags);
 
-       do_gettimeofday(&t);
+       t = ktime_get();
        /* KEY_MUTE repeats from knob need to be suppressed */
        if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) {
-               msec = tv2int(&t, &prev_time);
+               msec = ktime_ms_delta(t, prev_time);
                if (msec < ictx->idev->rep[REP_DELAY]) {
                        spin_unlock_irqrestore(&ictx->kc_lock, flags);
                        return;