ALSA: pcm: Replace [audio_]tstamp_[n]sec by struct __snd_timespec in struct snd_pcm_mmap_status32

To match struct __snd_pcm_mmap_status and enable reuse of
snd_pcm_sync_ptr_get_user() and snd_pcm_sync_ptr_put_user() by
snd_pcm_sync_ptr() replace tstamp_sec and tstamp_nsec fields by
a struct __snd_timespec in struct snd_pcm_mmap_status32.
Do the same with audio_tstamp_sec and audio_tstamp_nsec.

This is possible because struct snd_pcm_mmap_status32 is packed
and __SND_STRUCT_TIME64 is always defined for kernel which means
struct __snd_timespec is always defined as:

	struct __snd_timespec {
		__s32 tv_sec;
		__s32 tv_nsec;
	};

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/df8ea1a9aff61c3e358759b1f495bdb9fb8a3e6a.1749883041.git.christophe.leroy@csgroup.eu

Author: chleroy

sound/core/pcm_compat.c

@@ -377,12 +377,10 @@ struct snd_pcm_mmap_status_x32 {
 	s32 pad1;
 	u32 hw_ptr;
 	u32 pad2; /* alignment */
-	s64 tstamp_sec;
-	s64 tstamp_nsec;
+	struct __snd_timespec64 tstamp;
 	snd_pcm_state_t suspended_state;
 	s32 pad3;
-	s64 audio_tstamp_sec;
-	s64 audio_tstamp_nsec;
+	struct __snd_timespec64 audio_tstamp;
 } __packed;
 
 struct snd_pcm_mmap_control_x32 {

sound/core/pcm_native.c

@@ -3078,11 +3078,11 @@ failed_begin:									\
 		goto failed_begin;						\
 	unsafe_put_user(__s.state, &__src->s.status.state, failed);		\
 	unsafe_put_user(__s.hw_ptr, &__src->s.status.hw_ptr, failed);		\
-	unsafe_put_user(__s.tstamp.tv_sec, &__src->s.status.tstamp_sec, failed);\
-	unsafe_put_user(__s.tstamp.tv_nsec, &__src->s.status.tstamp_nsec, failed);		\
+	unsafe_put_user(__s.tstamp.tv_sec, &__src->s.status.tstamp.tv_sec, failed);		\
+	unsafe_put_user(__s.tstamp.tv_nsec, &__src->s.status.tstamp.tv_nsec, failed);		\
 	unsafe_put_user(__s.suspended_state, &__src->s.status.suspended_state, failed);		\
-	unsafe_put_user(__s.audio_tstamp.tv_sec, &__src->s.status.audio_tstamp_sec, failed);	\
-	unsafe_put_user(__s.audio_tstamp.tv_nsec, &__src->s.status.audio_tstamp_nsec, failed);	\
+	unsafe_put_user(__s.audio_tstamp.tv_sec, &__src->s.status.audio_tstamp.tv_sec, failed);	\
+	unsafe_put_user(__s.audio_tstamp.tv_nsec, &__src->s.status.audio_tstamp.tv_nsec, failed);\
 	unsafe_put_user(__c.appl_ptr, &__src->c.control.appl_ptr, failed);	\
 	unsafe_put_user(__c.avail_min, &__src->c.control.avail_min, failed);	\
 	__err = 0;								\
@@ -3143,11 +3143,9 @@ struct snd_pcm_mmap_status32 {
 	snd_pcm_state_t state;
 	s32 pad1;
 	u32 hw_ptr;
-	s32 tstamp_sec;
-	s32 tstamp_nsec;
+	struct __snd_timespec tstamp;
 	snd_pcm_state_t suspended_state;
-	s32 audio_tstamp_sec;
-	s32 audio_tstamp_nsec;
+	struct __snd_timespec audio_tstamp;
 } __packed;
 
 struct snd_pcm_mmap_control32 {