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. This patch use a new function which is provided by another patch listed below to get the millisecond time difference. http://lkml.iu.edu//hypermail/linux/kernel/1412.2/00625.html Signed-off-by: Chunyan Zhang <zhang.chunyan@xxxxxxxxxx> --- drivers/media/rc/imon.c | 49 +++++++++++++---------------------------------- 1 file changed, 13 insertions(+), 36 deletions(-) diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c index b8837dd..a641139 100644 --- a/drivers/media/rc/imon.c +++ b/drivers/media/rc/imon.c @@ -31,6 +31,7 @@ #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> @@ -41,7 +42,6 @@ #include <linux/usb/input.h> #include <media/rc-core.h> -#include <linux/time.h> #include <linux/timer.h> #define MOD_AUTHOR "Jarod Wilson <jarod@xxxxxxxxxxxx>" @@ -1158,29 +1158,6 @@ out: return retval; } -static inline int tv2int(const struct timeval *a, const struct timeval *b) -{ - int usecs = 0; - int sec = 0; - - if (b->tv_usec > a->tv_usec) { - usecs = 1000000; - sec--; - } - - usecs += a->tv_usec - b->tv_usec; - - sec += a->tv_sec - b->tv_sec; - sec *= 1000; - usecs /= 1000; - sec += usecs; - - if (sec < 0) - sec = 1000; - - return sec; -} - /** * The directional pad behaves a bit differently, depending on whether this is * one of the older ffdc devices or a newer device. Newer devices appear to @@ -1191,16 +1168,16 @@ 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 = {0}; + static ktime_t hit_time = {0}; 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; @@ -1596,9 +1573,9 @@ static void imon_incoming_packet(struct imon_context *ictx, int i; 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 = {0}; u8 ktype; /* filter out junk data on the older 0xffdc imon devices */ @@ -1692,10 +1669,10 @@ static void imon_incoming_packet(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; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
