ALSA: Replace timespec with timespec64

Since timespec is not year 2038 safe on 32bit system, and we need to
convert all timespec variables to timespec64 type for sound subsystem.

This patch is used to do preparation for following patches, that will
convert all structures defined in uapi/sound/asound.h to use 64-bit
time_t.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 44 insertions, 32 deletions

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 2236b5e0c1f2..ea5518d44e66 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -144,8 +144,12 @@ void __snd_pcm_xrun(struct snd_pcm_substream *substream)
 	struct snd_pcm_runtime *runtime = substream->runtime;
 
 	trace_xrun(substream);
-	if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
-		snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp);
+	if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
+		struct timespec64 tstamp;
+
+		snd_pcm_gettime(runtime, &tstamp);
+		runtime->status->tstamp = timespec64_to_timespec(tstamp);
+	}
 	snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
 	if (xrun_debug(substream, XRUN_DEBUG_BASIC)) {
 		char name[16];
@@ -200,12 +204,12 @@ int snd_pcm_update_state(struct snd_pcm_substream *substream,
 }
 
 static void update_audio_tstamp(struct snd_pcm_substream *substream,
-				struct timespec *curr_tstamp,
-				struct timespec *audio_tstamp)
+				struct timespec64 *curr_tstamp,
+				struct timespec64 *audio_tstamp)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	u64 audio_frames, audio_nsecs;
-	struct timespec driver_tstamp;
+	struct timespec64 driver_tstamp;
 
 	if (runtime->tstamp_mode != SNDRV_PCM_TSTAMP_ENABLE)
 		return;
@@ -229,18 +233,22 @@ static void update_audio_tstamp(struct snd_pcm_substream *substream,
 		}
 		audio_nsecs = div_u64(audio_frames * 1000000000LL,
 				runtime->rate);
-		*audio_tstamp = ns_to_timespec(audio_nsecs);
+		*audio_tstamp = ns_to_timespec64(audio_nsecs);
 	}
-	if (!timespec_equal(&runtime->status->audio_tstamp, audio_tstamp)) {
-		runtime->status->audio_tstamp = *audio_tstamp;
-		runtime->status->tstamp = *curr_tstamp;
+
+	if (runtime->status->audio_tstamp.tv_sec != audio_tstamp->tv_sec ||
+	    runtime->status->audio_tstamp.tv_nsec != audio_tstamp->tv_nsec) {
+		runtime->status->audio_tstamp =
+			timespec64_to_timespec(*audio_tstamp);
+		runtime->status->tstamp = timespec64_to_timespec(*curr_tstamp);
 	}
 
+
 	/*
 	 * re-take a driver timestamp to let apps detect if the reference tstamp
 	 * read by low-level hardware was provided with a delay
 	 */
-	snd_pcm_gettime(substream->runtime, (struct timespec *)&driver_tstamp);
+	snd_pcm_gettime(substream->runtime, &driver_tstamp);
 	runtime->driver_tstamp = driver_tstamp;
 }
 
@@ -253,8 +261,8 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
 	snd_pcm_sframes_t hdelta, delta;
 	unsigned long jdelta;
 	unsigned long curr_jiffies;
-	struct timespec curr_tstamp;
-	struct timespec audio_tstamp;
+	struct timespec64 curr_tstamp;
+	struct timespec64 audio_tstamp;
 	int crossed_boundary = 0;
 
 	old_hw_ptr = runtime->status->hw_ptr;
@@ -277,9 +285,9 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
 
 			/* re-test in case tstamp type is not supported in hardware and was demoted to DEFAULT */
 			if (runtime->audio_tstamp_report.actual_type == SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT)
-				snd_pcm_gettime(runtime, (struct timespec *)&curr_tstamp);
+				snd_pcm_gettime(runtime, &curr_tstamp);
 		} else
-			snd_pcm_gettime(runtime, (struct timespec *)&curr_tstamp);
+			snd_pcm_gettime(runtime, &curr_tstamp);
 	}
 
 	if (pos == SNDRV_PCM_POS_XRUN) {
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 1fe581167b7b..67fe14bad7cb 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -918,12 +918,12 @@ int snd_pcm_status(struct snd_pcm_substream *substream,
 	status->suspended_state = runtime->status->suspended_state;
 	if (status->state == SNDRV_PCM_STATE_OPEN)
 		goto _end;
-	status->trigger_tstamp = runtime->trigger_tstamp;
+	status->trigger_tstamp = timespec64_to_timespec(runtime->trigger_tstamp);
 	if (snd_pcm_running(substream)) {
 		snd_pcm_update_hw_ptr(substream);
 		if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
 			status->tstamp = runtime->status->tstamp;
-			status->driver_tstamp = runtime->driver_tstamp;
+			status->driver_tstamp = timespec64_to_timespec(runtime->driver_tstamp);
 			status->audio_tstamp =
 				runtime->status->audio_tstamp;
 			if (runtime->audio_tstamp_report.valid == 1)
@@ -936,8 +936,12 @@ int snd_pcm_status(struct snd_pcm_substream *substream,
 		}
 	} else {
 		/* get tstamp only in fallback mode and only if enabled */
-		if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
-			snd_pcm_gettime(runtime, &status->tstamp);
+		if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
+			struct timespec64 tstamp;
+
+			snd_pcm_gettime(runtime, &tstamp);
+			status->tstamp = timespec64_to_timespec(tstamp);
+		}
 	}
  _tstamp_end:
 	status->appl_ptr = runtime->control->appl_ptr;
diff --git a/sound/core/timer.c b/sound/core/timer.c
index 24fed5c78273..d808d5554c7a 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -59,7 +59,7 @@ struct snd_timer_user {
 	spinlock_t qlock;
 	unsigned long last_resolution;
 	unsigned int filter;
-	struct timespec tstamp;		/* trigger tstamp */
+	struct timespec64 tstamp;		/* trigger tstamp */
 	wait_queue_head_t qchange_sleep;
 	struct fasync_struct *fasync;
 	struct mutex ioctl_lock;
@@ -453,12 +453,12 @@ static void snd_timer_notify1(struct snd_timer_instance *ti, int event)
 	struct snd_timer *timer = ti->timer;
 	unsigned long resolution = 0;
 	struct snd_timer_instance *ts;
-	struct timespec tstamp;
+	struct timespec64 tstamp;
 
 	if (timer_tstamp_monotonic)
-		ktime_get_ts(&tstamp);
+		ktime_get_ts64(&tstamp);
 	else
-		getnstimeofday(&tstamp);
+		ktime_get_real_ts64(&tstamp);
 	if (snd_BUG_ON(event < SNDRV_TIMER_EVENT_START ||
 		       event > SNDRV_TIMER_EVENT_PAUSE))
 		return;
@@ -1025,7 +1025,7 @@ static int snd_timer_dev_disconnect(struct snd_device *device)
 	return 0;
 }
 
-void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstamp)
+void snd_timer_notify(struct snd_timer *timer, int event, struct timespec64 *tstamp)
 {
 	unsigned long flags;
 	unsigned long resolution = 0;
@@ -1318,7 +1318,7 @@ static void snd_timer_user_append_to_tqueue(struct snd_timer_user *tu,
 
 static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
 				     int event,
-				     struct timespec *tstamp,
+				     struct timespec64 *tstamp,
 				     unsigned long resolution)
 {
 	struct snd_timer_user *tu = timeri->callback_data;
@@ -1332,7 +1332,7 @@ static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
 		return;
 	memset(&r1, 0, sizeof(r1));
 	r1.event = event;
-	r1.tstamp = *tstamp;
+	r1.tstamp = timespec64_to_timespec(*tstamp);
 	r1.val = resolution;
 	spin_lock_irqsave(&tu->qlock, flags);
 	snd_timer_user_append_to_tqueue(tu, &r1);
@@ -1355,7 +1355,7 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
 {
 	struct snd_timer_user *tu = timeri->callback_data;
 	struct snd_timer_tread *r, r1;
-	struct timespec tstamp;
+	struct timespec64 tstamp;
 	int prev, append = 0;
 
 	memset(&r1, 0, sizeof(r1));
@@ -1368,14 +1368,14 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
 	}
 	if (tu->last_resolution != resolution || ticks > 0) {
 		if (timer_tstamp_monotonic)
-			ktime_get_ts(&tstamp);
+			ktime_get_ts64(&tstamp);
 		else
-			getnstimeofday(&tstamp);
+			ktime_get_real_ts64(&tstamp);
 	}
 	if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&
 	    tu->last_resolution != resolution) {
 		r1.event = SNDRV_TIMER_EVENT_RESOLUTION;
-		r1.tstamp = tstamp;
+		r1.tstamp = timespec64_to_timespec(tstamp);
 		r1.val = resolution;
 		snd_timer_user_append_to_tqueue(tu, &r1);
 		tu->last_resolution = resolution;
@@ -1389,14 +1389,14 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
 		prev = tu->qtail == 0 ? tu->queue_size - 1 : tu->qtail - 1;
 		r = &tu->tqueue[prev];
 		if (r->event == SNDRV_TIMER_EVENT_TICK) {
-			r->tstamp = tstamp;
+			r->tstamp = timespec64_to_timespec(tstamp);
 			r->val += ticks;
 			append++;
 			goto __wake;
 		}
 	}
 	r1.event = SNDRV_TIMER_EVENT_TICK;
-	r1.tstamp = tstamp;
+	r1.tstamp = timespec64_to_timespec(tstamp);
 	r1.val = ticks;
 	snd_timer_user_append_to_tqueue(tu, &r1);
 	append++;
@@ -1885,7 +1885,7 @@ static int snd_timer_user_status(struct file *file,
 	if (!tu->timeri)
 		return -EBADFD;
 	memset(&status, 0, sizeof(status));
-	status.tstamp = tu->tstamp;
+	status.tstamp = timespec64_to_timespec(tu->tstamp);
 	status.resolution = snd_timer_resolution(tu->timeri);
 	status.lost = tu->timeri->lost;
 	status.overrun = tu->overrun;