1299 	struct snd_timer_user *tu = timeri->callback_data;  in snd_timer_user_interrupt()  local
1303 	guard(spinlock)(&tu->qlock);  in snd_timer_user_interrupt()
1304 	if (tu->qused > 0) {  in snd_timer_user_interrupt()
1305 		prev = tu->qtail == 0 ? tu->queue_size - 1 : tu->qtail - 1;  in snd_timer_user_interrupt()
1306 		r = &tu->queue[prev];  in snd_timer_user_interrupt()
1312 	if (tu->qused >= tu->queue_size) {  in snd_timer_user_interrupt()
1313 		tu->overrun++;  in snd_timer_user_interrupt()
1315 		r = &tu->queue[tu->qtail++];  in snd_timer_user_interrupt()
1316 		tu->qtail %= tu->queue_size;  in snd_timer_user_interrupt()
1319 		tu->qused++;  in snd_timer_user_interrupt()
1322 	snd_kill_fasync(tu->fasync, SIGIO, POLL_IN);  in snd_timer_user_interrupt()
1323 	wake_up(&tu->qchange_sleep);  in snd_timer_user_interrupt()
1326 static void snd_timer_user_append_to_tqueue(struct snd_timer_user *tu,  in snd_timer_user_append_to_tqueue()  argument
1329 	if (tu->qused >= tu->queue_size) {  in snd_timer_user_append_to_tqueue()
1330 		tu->overrun++;  in snd_timer_user_append_to_tqueue()
1332 		memcpy(&tu->tqueue[tu->qtail++], tread, sizeof(*tread));  in snd_timer_user_append_to_tqueue()
1333 		tu->qtail %= tu->queue_size;  in snd_timer_user_append_to_tqueue()
1334 		tu->qused++;  in snd_timer_user_append_to_tqueue()
1343 	struct snd_timer_user *tu = timeri->callback_data;  in snd_timer_user_ccallback()  local
1348 		tu->tstamp = *tstamp;  in snd_timer_user_ccallback()
1349 	if ((tu->filter & (1 << event)) == 0 || !tu->tread)  in snd_timer_user_ccallback()
1356 	scoped_guard(spinlock_irqsave, &tu->qlock)  in snd_timer_user_ccallback()
1357 		snd_timer_user_append_to_tqueue(tu, &r1);  in snd_timer_user_ccallback()
1358 	snd_kill_fasync(tu->fasync, SIGIO, POLL_IN);  in snd_timer_user_ccallback()
1359 	wake_up(&tu->qchange_sleep);  in snd_timer_user_ccallback()
1364 	struct snd_timer_user *tu = timeri->callback_data;  in snd_timer_user_disconnect()  local
1366 	tu->disconnected = true;  in snd_timer_user_disconnect()
1367 	wake_up(&tu->qchange_sleep);  in snd_timer_user_disconnect()
1374 	struct snd_timer_user *tu = timeri->callback_data;  in snd_timer_user_tinterrupt()  local
1381 	scoped_guard(spinlock, &tu->qlock) {  in snd_timer_user_tinterrupt()
1382 		if ((tu->filter & ((1 << SNDRV_TIMER_EVENT_RESOLUTION) |  in snd_timer_user_tinterrupt()
1385 		if (tu->last_resolution != resolution || ticks > 0) {  in snd_timer_user_tinterrupt()
1391 		if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&  in snd_timer_user_tinterrupt()
1392 		    tu->last_resolution != resolution) {  in snd_timer_user_tinterrupt()
1397 			snd_timer_user_append_to_tqueue(tu, &r1);  in snd_timer_user_tinterrupt()
1398 			tu->last_resolution = resolution;  in snd_timer_user_tinterrupt()
1401 		if ((tu->filter & (1 << SNDRV_TIMER_EVENT_TICK)) == 0)  in snd_timer_user_tinterrupt()
1405 		if (tu->qused > 0) {  in snd_timer_user_tinterrupt()
1406 			prev = tu->qtail == 0 ? tu->queue_size - 1 : tu->qtail - 1;  in snd_timer_user_tinterrupt()
1407 			r = &tu->tqueue[prev];  in snd_timer_user_tinterrupt()
1420 		snd_timer_user_append_to_tqueue(tu, &r1);  in snd_timer_user_tinterrupt()
1425 	snd_kill_fasync(tu->fasync, SIGIO, POLL_IN);  in snd_timer_user_tinterrupt()
1426 	wake_up(&tu->qchange_sleep);  in snd_timer_user_tinterrupt()
1429 static int realloc_user_queue(struct snd_timer_user *tu, int size)  in realloc_user_queue()  argument
1434 	if (tu->tread) {  in realloc_user_queue()
1444 	guard(spinlock_irq)(&tu->qlock);  in realloc_user_queue()
1445 	kfree(tu->queue);  in realloc_user_queue()
1446 	kfree(tu->tqueue);  in realloc_user_queue()
1447 	tu->queue_size = size;  in realloc_user_queue()
1448 	tu->queue = queue;  in realloc_user_queue()
1449 	tu->tqueue = tqueue;  in realloc_user_queue()
1450 	tu->qhead = tu->qtail = tu->qused = 0;  in realloc_user_queue()
1457 	struct snd_timer_user *tu;  in snd_timer_user_open()  local
1464 	tu = kzalloc(sizeof(*tu), GFP_KERNEL);  in snd_timer_user_open()
1465 	if (tu == NULL)  in snd_timer_user_open()
1467 	spin_lock_init(&tu->qlock);  in snd_timer_user_open()
1468 	init_waitqueue_head(&tu->qchange_sleep);  in snd_timer_user_open()
1469 	mutex_init(&tu->ioctl_lock);  in snd_timer_user_open()
1470 	tu->ticks = 1;  in snd_timer_user_open()
1471 	if (realloc_user_queue(tu, 128) < 0) {  in snd_timer_user_open()
1472 		kfree(tu);  in snd_timer_user_open()
1475 	file->private_data = tu;  in snd_timer_user_open()
1481 	struct snd_timer_user *tu;  in snd_timer_user_release()  local
1484 		tu = file->private_data;  in snd_timer_user_release()
1486 		scoped_guard(mutex, &tu->ioctl_lock) {  in snd_timer_user_release()
1487 			if (tu->timeri) {  in snd_timer_user_release()
1488 				snd_timer_close(tu->timeri);  in snd_timer_user_release()
1489 				snd_timer_instance_free(tu->timeri);  in snd_timer_user_release()
1492 		snd_fasync_free(tu->fasync);  in snd_timer_user_release()
1493 		kfree(tu->queue);  in snd_timer_user_release()
1494 		kfree(tu->tqueue);  in snd_timer_user_release()
1495 		kfree(tu);  in snd_timer_user_release()
1714 	struct snd_timer_user *tu;  in snd_timer_user_tselect()  local
1719 	tu = file->private_data;  in snd_timer_user_tselect()
1720 	if (tu->timeri) {  in snd_timer_user_tselect()
1721 		snd_timer_close(tu->timeri);  in snd_timer_user_tselect()
1722 		snd_timer_instance_free(tu->timeri);  in snd_timer_user_tselect()
1723 		tu->timeri = NULL;  in snd_timer_user_tselect()
1732 	tu->timeri = snd_timer_instance_new(str);  in snd_timer_user_tselect()
1733 	if (!tu->timeri) {  in snd_timer_user_tselect()
1738 	tu->timeri->flags |= SNDRV_TIMER_IFLG_FAST;  in snd_timer_user_tselect()
1739 	tu->timeri->callback = tu->tread  in snd_timer_user_tselect()
1741 	tu->timeri->ccallback = snd_timer_user_ccallback;  in snd_timer_user_tselect()
1742 	tu->timeri->callback_data = (void *)tu;  in snd_timer_user_tselect()
1743 	tu->timeri->disconnect = snd_timer_user_disconnect;  in snd_timer_user_tselect()
1745 	err = snd_timer_open(tu->timeri, &tselect.id, current->pid);  in snd_timer_user_tselect()
1747 		snd_timer_instance_free(tu->timeri);  in snd_timer_user_tselect()
1748 		tu->timeri = NULL;  in snd_timer_user_tselect()
1758 	struct snd_timer_user *tu;  in snd_timer_user_info()  local
1762 	tu = file->private_data;  in snd_timer_user_info()
1763 	if (!tu->timeri)  in snd_timer_user_info()
1765 	t = tu->timeri->timer;  in snd_timer_user_info()
1787 	struct snd_timer_user *tu;  in snd_timer_user_params()  local
1792 	tu = file->private_data;  in snd_timer_user_params()
1793 	if (!tu->timeri)  in snd_timer_user_params()
1795 	t = tu->timeri->timer;  in snd_timer_user_params()
1809 		resolution = snd_timer_resolution(tu->timeri);  in snd_timer_user_params()
1838 	snd_timer_stop(tu->timeri);  in snd_timer_user_params()
1840 		tu->timeri->flags &= ~(SNDRV_TIMER_IFLG_AUTO|  in snd_timer_user_params()
1844 			tu->timeri->flags |= SNDRV_TIMER_IFLG_AUTO;  in snd_timer_user_params()
1846 			tu->timeri->flags |= SNDRV_TIMER_IFLG_EXCLUSIVE;  in snd_timer_user_params()
1848 			tu->timeri->flags |= SNDRV_TIMER_IFLG_EARLY_EVENT;  in snd_timer_user_params()
1851 	    (unsigned int)tu->queue_size != params.queue_size) {  in snd_timer_user_params()
1852 		err = realloc_user_queue(tu, params.queue_size);  in snd_timer_user_params()
1856 	scoped_guard(spinlock_irq, &tu->qlock) {  in snd_timer_user_params()
1857 		tu->qhead = tu->qtail = tu->qused = 0;  in snd_timer_user_params()
1858 		if (tu->timeri->flags & SNDRV_TIMER_IFLG_EARLY_EVENT) {  in snd_timer_user_params()
1859 			if (tu->tread) {  in snd_timer_user_params()
1867 				snd_timer_user_append_to_tqueue(tu, &tread);  in snd_timer_user_params()
1869 				struct snd_timer_read *r = &tu->queue[0];  in snd_timer_user_params()
1873 				tu->qused++;  in snd_timer_user_params()
1874 				tu->qtail++;  in snd_timer_user_params()
1877 		tu->filter = params.filter;  in snd_timer_user_params()
1878 		tu->ticks = params.ticks;  in snd_timer_user_params()
1890 	struct snd_timer_user *tu;  in snd_timer_user_status32()  local
1893 	tu = file->private_data;  in snd_timer_user_status32()
1894 	if (!tu->timeri)  in snd_timer_user_status32()
1897 	status.tstamp_sec = tu->tstamp.tv_sec;  in snd_timer_user_status32()
1898 	status.tstamp_nsec = tu->tstamp.tv_nsec;  in snd_timer_user_status32()
1899 	status.resolution = snd_timer_resolution(tu->timeri);  in snd_timer_user_status32()
1900 	status.lost = tu->timeri->lost;  in snd_timer_user_status32()
1901 	status.overrun = tu->overrun;  in snd_timer_user_status32()
1902 	scoped_guard(spinlock_irq, &tu->qlock)  in snd_timer_user_status32()
1903 		status.queue = tu->qused;  in snd_timer_user_status32()
1912 	struct snd_timer_user *tu;  in snd_timer_user_status64()  local
1915 	tu = file->private_data;  in snd_timer_user_status64()
1916 	if (!tu->timeri)  in snd_timer_user_status64()
1919 	status.tstamp_sec = tu->tstamp.tv_sec;  in snd_timer_user_status64()
1920 	status.tstamp_nsec = tu->tstamp.tv_nsec;  in snd_timer_user_status64()
1921 	status.resolution = snd_timer_resolution(tu->timeri);  in snd_timer_user_status64()
1922 	status.lost = tu->timeri->lost;  in snd_timer_user_status64()
1923 	status.overrun = tu->overrun;  in snd_timer_user_status64()
1924 	scoped_guard(spinlock_irq, &tu->qlock)  in snd_timer_user_status64()
1925 		status.queue = tu->qused;  in snd_timer_user_status64()
1934 	struct snd_timer_user *tu;  in snd_timer_user_start()  local
1936 	tu = file->private_data;  in snd_timer_user_start()
1937 	if (!tu->timeri)  in snd_timer_user_start()
1939 	snd_timer_stop(tu->timeri);  in snd_timer_user_start()
1940 	tu->timeri->lost = 0;  in snd_timer_user_start()
1941 	tu->last_resolution = 0;  in snd_timer_user_start()
1942 	err = snd_timer_start(tu->timeri, tu->ticks);  in snd_timer_user_start()
1951 	struct snd_timer_user *tu;  in snd_timer_user_stop()  local
1953 	tu = file->private_data;  in snd_timer_user_stop()
1954 	if (!tu->timeri)  in snd_timer_user_stop()
1956 	err = snd_timer_stop(tu->timeri);  in snd_timer_user_stop()
1965 	struct snd_timer_user *tu;  in snd_timer_user_continue()  local
1967 	tu = file->private_data;  in snd_timer_user_continue()
1968 	if (!tu->timeri)  in snd_timer_user_continue()
1971 	if (!(tu->timeri->flags & SNDRV_TIMER_IFLG_PAUSED))  in snd_timer_user_continue()
1973 	tu->timeri->lost = 0;  in snd_timer_user_continue()
1974 	err = snd_timer_continue(tu->timeri);  in snd_timer_user_continue()
1983 	struct snd_timer_user *tu;  in snd_timer_user_pause()  local
1985 	tu = file->private_data;  in snd_timer_user_pause()
1986 	if (!tu->timeri)  in snd_timer_user_pause()
1988 	err = snd_timer_pause(tu->timeri);  in snd_timer_user_pause()
1994 static int snd_timer_user_tread(void __user *argp, struct snd_timer_user *tu,  in snd_timer_user_tread()  argument
2000 	if (tu->timeri)	/* too late */  in snd_timer_user_tread()
2005 	old_tread = tu->tread;  in snd_timer_user_tread()
2008 		tu->tread = TREAD_FORMAT_NONE;  in snd_timer_user_tread()
2011 		tu->tread = TREAD_FORMAT_TIME64;  in snd_timer_user_tread()
2013 		tu->tread = TREAD_FORMAT_TIME32;  in snd_timer_user_tread()
2015 	if (tu->tread != old_tread &&  in snd_timer_user_tread()
2016 	    realloc_user_queue(tu, tu->queue_size) < 0) {  in snd_timer_user_tread()
2017 		tu->tread = old_tread;  in snd_timer_user_tread()
2245 	struct snd_timer_user *tu;  in __snd_timer_user_ioctl()  local
2249 	tu = file->private_data;  in __snd_timer_user_ioctl()
2257 		return snd_timer_user_tread(argp, tu, cmd, compat);  in __snd_timer_user_ioctl()
2295 	struct snd_timer_user *tu = file->private_data;  in snd_timer_user_ioctl()  local
2297 	guard(mutex)(&tu->ioctl_lock);  in snd_timer_user_ioctl()
2303 	struct snd_timer_user *tu;  in snd_timer_user_fasync()  local
2305 	tu = file->private_data;  in snd_timer_user_fasync()
2306 	return snd_fasync_helper(fd, file, on, &tu->fasync);  in snd_timer_user_fasync()
2314 	struct snd_timer_user *tu;  in snd_timer_user_read()  local
2319 	tu = file->private_data;  in snd_timer_user_read()
2320 	switch (tu->tread) {  in snd_timer_user_read()
2335 	mutex_lock(&tu->ioctl_lock);  in snd_timer_user_read()
2336 	spin_lock_irq(&tu->qlock);  in snd_timer_user_read()
2338 		while (!tu->qused) {  in snd_timer_user_read()
2348 			add_wait_queue(&tu->qchange_sleep, &wait);  in snd_timer_user_read()
2350 			spin_unlock_irq(&tu->qlock);  in snd_timer_user_read()
2351 			mutex_unlock(&tu->ioctl_lock);  in snd_timer_user_read()
2353 			mutex_lock(&tu->ioctl_lock);  in snd_timer_user_read()
2354 			spin_lock_irq(&tu->qlock);  in snd_timer_user_read()
2356 			remove_wait_queue(&tu->qchange_sleep, &wait);  in snd_timer_user_read()
2358 			if (tu->disconnected) {  in snd_timer_user_read()
2368 		qhead = tu->qhead++;  in snd_timer_user_read()
2369 		tu->qhead %= tu->queue_size;  in snd_timer_user_read()
2370 		tu->qused--;  in snd_timer_user_read()
2371 		spin_unlock_irq(&tu->qlock);  in snd_timer_user_read()
2373 		tread = &tu->tqueue[qhead];  in snd_timer_user_read()
2375 		switch (tu->tread) {  in snd_timer_user_read()
2394 			if (copy_to_user(buffer, &tu->queue[qhead],  in snd_timer_user_read()
2403 		spin_lock_irq(&tu->qlock);  in snd_timer_user_read()
2410 	spin_unlock_irq(&tu->qlock);  in snd_timer_user_read()
2411 	mutex_unlock(&tu->ioctl_lock);  in snd_timer_user_read()
2418         struct snd_timer_user *tu;  in snd_timer_user_poll()  local
2420         tu = file->private_data;  in snd_timer_user_poll()
2422         poll_wait(file, &tu->qchange_sleep, wait);  in snd_timer_user_poll()
2425 	guard(spinlock_irq)(&tu->qlock);  in snd_timer_user_poll()
2426 	if (tu->qused)  in snd_timer_user_poll()
2428 	if (tu->disconnected)  in snd_timer_user_poll()