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>

1 files changed, 22 insertions, 14 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) {