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authorLinus Torvalds <torvalds@linux-foundation.org>2008-01-31 18:16:28 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-01-31 18:16:28 -0500
commite1a9c9872dd004617555dff079b357a6ffd945e9 (patch)
treec34779e59712ff345f8e4ee97e74086a85b34974 /sound/core/pcm_lib.c
parentfcc3ff4f9d695a80dc6e6058e0d631a3026ed4c3 (diff)
parent2ecba4ffbbc6c85fce8c3878514be415edace413 (diff)
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa: (299 commits) [ALSA] version 1.0.16rc2 [ALSA] hda: fix Mic in as output [ALSA] emu10k1 - Another EMU0404 Board ID [ALSA] emu10k1 - Fix kthread handling at resume [ALSA] emu10k1: General cleanup, add new locks, fix alsa bug#3501, kernel bug#9304. [ALSA] emu10k1 - Use enum for emu_model types [ALSA] emu10k1 - Don't create emu1010 controls for non-emu boards [ALSA] emu10k1 - 1616(M) cardbus improvements [ALSA] snd:emu10k1: E-Mu updates. Fixes to firmware loading and support for 0404. [ALSA] emu10k1: Add comments regarding E-Mu ins and outs. [ALSA] oxygen: revert SPI clock frequency change for AK4396/WM8785 [ALSA] es1938 - improve capture hw pointer reads [ALSA] HDA-Intel - Add support for Intel SCH [ALSA] hda: Add GPIO mute support to STAC9205 [ALSA] hda-codec - Add Dell T3400 support [ALSA] hda-codec - Add model for HP DV9553EG laptop [ALSA] hda-codec - Control SPDIF as slave [ALSA] hda_intel: ALSA HD Audio patch for Intel ICH10 DeviceID's [ALSA] Fix Oops with PCM OSS sync [ALSA] hda-codec - Add speaker automute to ALC262 HP models ...
Diffstat (limited to 'sound/core/pcm_lib.c')
-rw-r--r--sound/core/pcm_lib.c339
1 files changed, 82 insertions, 257 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 806f1fba5446..1533f0379e9d 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -20,7 +20,6 @@
20 * 20 *
21 */ 21 */
22 22
23#include <sound/driver.h>
24#include <linux/slab.h> 23#include <linux/slab.h>
25#include <linux/time.h> 24#include <linux/time.h>
26#include <sound/core.h> 25#include <sound/core.h>
@@ -145,11 +144,11 @@ static inline snd_pcm_uframes_t snd_pcm_update_hw_ptr_pos(struct snd_pcm_substre
145{ 144{
146 snd_pcm_uframes_t pos; 145 snd_pcm_uframes_t pos;
147 146
147 if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
148 snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp);
148 pos = substream->ops->pointer(substream); 149 pos = substream->ops->pointer(substream);
149 if (pos == SNDRV_PCM_POS_XRUN) 150 if (pos == SNDRV_PCM_POS_XRUN)
150 return pos; /* XRUN */ 151 return pos; /* XRUN */
151 if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP)
152 getnstimeofday((struct timespec *)&runtime->status->tstamp);
153#ifdef CONFIG_SND_DEBUG 152#ifdef CONFIG_SND_DEBUG
154 if (pos >= runtime->buffer_size) { 153 if (pos >= runtime->buffer_size) {
155 snd_printk(KERN_ERR "BUG: stream = %i, pos = 0x%lx, buffer size = 0x%lx, period size = 0x%lx\n", substream->stream, pos, runtime->buffer_size, runtime->period_size); 154 snd_printk(KERN_ERR "BUG: stream = %i, pos = 0x%lx, buffer size = 0x%lx, period size = 0x%lx\n", substream->stream, pos, runtime->buffer_size, runtime->period_size);
@@ -1139,7 +1138,7 @@ EXPORT_SYMBOL(snd_pcm_hw_constraint_step);
1139 1138
1140static int snd_pcm_hw_rule_pow2(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) 1139static int snd_pcm_hw_rule_pow2(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
1141{ 1140{
1142 static int pow2_sizes[] = { 1141 static unsigned int pow2_sizes[] = {
1143 1<<0, 1<<1, 1<<2, 1<<3, 1<<4, 1<<5, 1<<6, 1<<7, 1142 1<<0, 1<<1, 1<<2, 1<<3, 1<<4, 1<<5, 1<<6, 1<<7,
1144 1<<8, 1<<9, 1<<10, 1<<11, 1<<12, 1<<13, 1<<14, 1<<15, 1143 1<<8, 1<<9, 1<<10, 1<<11, 1<<12, 1<<13, 1<<14, 1<<15,
1145 1<<16, 1<<17, 1<<18, 1<<19, 1<<20, 1<<21, 1<<22, 1<<23, 1144 1<<16, 1<<17, 1<<18, 1<<19, 1<<20, 1<<21, 1<<22, 1<<23,
@@ -1451,108 +1450,13 @@ int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,
1451 1450
1452EXPORT_SYMBOL(snd_pcm_lib_ioctl); 1451EXPORT_SYMBOL(snd_pcm_lib_ioctl);
1453 1452
1454/*
1455 * Conditions
1456 */
1457
1458static void snd_pcm_system_tick_set(struct snd_pcm_substream *substream,
1459 unsigned long ticks)
1460{
1461 struct snd_pcm_runtime *runtime = substream->runtime;
1462 if (ticks == 0)
1463 del_timer(&runtime->tick_timer);
1464 else {
1465 ticks += (1000000 / HZ) - 1;
1466 ticks /= (1000000 / HZ);
1467 mod_timer(&runtime->tick_timer, jiffies + ticks);
1468 }
1469}
1470
1471/* Temporary alias */
1472void snd_pcm_tick_set(struct snd_pcm_substream *substream, unsigned long ticks)
1473{
1474 snd_pcm_system_tick_set(substream, ticks);
1475}
1476
1477void snd_pcm_tick_prepare(struct snd_pcm_substream *substream)
1478{
1479 struct snd_pcm_runtime *runtime = substream->runtime;
1480 snd_pcm_uframes_t frames = ULONG_MAX;
1481 snd_pcm_uframes_t avail, dist;
1482 unsigned int ticks;
1483 u_int64_t n;
1484 u_int32_t r;
1485 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1486 if (runtime->silence_size >= runtime->boundary) {
1487 frames = 1;
1488 } else if (runtime->silence_size > 0 &&
1489 runtime->silence_filled < runtime->buffer_size) {
1490 snd_pcm_sframes_t noise_dist;
1491 noise_dist = snd_pcm_playback_hw_avail(runtime) + runtime->silence_filled;
1492 if (noise_dist > (snd_pcm_sframes_t)runtime->silence_threshold)
1493 frames = noise_dist - runtime->silence_threshold;
1494 }
1495 avail = snd_pcm_playback_avail(runtime);
1496 } else {
1497 avail = snd_pcm_capture_avail(runtime);
1498 }
1499 if (avail < runtime->control->avail_min) {
1500 snd_pcm_sframes_t n = runtime->control->avail_min - avail;
1501 if (n > 0 && frames > (snd_pcm_uframes_t)n)
1502 frames = n;
1503 }
1504 if (avail < runtime->buffer_size) {
1505 snd_pcm_sframes_t n = runtime->buffer_size - avail;
1506 if (n > 0 && frames > (snd_pcm_uframes_t)n)
1507 frames = n;
1508 }
1509 if (frames == ULONG_MAX) {
1510 snd_pcm_tick_set(substream, 0);
1511 return;
1512 }
1513 dist = runtime->status->hw_ptr - runtime->hw_ptr_base;
1514 /* Distance to next interrupt */
1515 dist = runtime->period_size - dist % runtime->period_size;
1516 if (dist <= frames) {
1517 snd_pcm_tick_set(substream, 0);
1518 return;
1519 }
1520 /* the base time is us */
1521 n = frames;
1522 n *= 1000000;
1523 div64_32(&n, runtime->tick_time * runtime->rate, &r);
1524 ticks = n + (r > 0 ? 1 : 0);
1525 if (ticks < runtime->sleep_min)
1526 ticks = runtime->sleep_min;
1527 snd_pcm_tick_set(substream, (unsigned long) ticks);
1528}
1529
1530void snd_pcm_tick_elapsed(struct snd_pcm_substream *substream)
1531{
1532 struct snd_pcm_runtime *runtime;
1533 unsigned long flags;
1534
1535 snd_assert(substream != NULL, return);
1536 runtime = substream->runtime;
1537 snd_assert(runtime != NULL, return);
1538
1539 snd_pcm_stream_lock_irqsave(substream, flags);
1540 if (!snd_pcm_running(substream) ||
1541 snd_pcm_update_hw_ptr(substream) < 0)
1542 goto _end;
1543 if (runtime->sleep_min)
1544 snd_pcm_tick_prepare(substream);
1545 _end:
1546 snd_pcm_stream_unlock_irqrestore(substream, flags);
1547}
1548
1549/** 1453/**
1550 * snd_pcm_period_elapsed - update the pcm status for the next period 1454 * snd_pcm_period_elapsed - update the pcm status for the next period
1551 * @substream: the pcm substream instance 1455 * @substream: the pcm substream instance
1552 * 1456 *
1553 * This function is called from the interrupt handler when the 1457 * This function is called from the interrupt handler when the
1554 * PCM has processed the period size. It will update the current 1458 * PCM has processed the period size. It will update the current
1555 * pointer, set up the tick, wake up sleepers, etc. 1459 * pointer, wake up sleepers, etc.
1556 * 1460 *
1557 * Even if more than one periods have elapsed since the last call, you 1461 * Even if more than one periods have elapsed since the last call, you
1558 * have to call this only once. 1462 * have to call this only once.
@@ -1576,8 +1480,6 @@ void snd_pcm_period_elapsed(struct snd_pcm_substream *substream)
1576 1480
1577 if (substream->timer_running) 1481 if (substream->timer_running)
1578 snd_timer_interrupt(substream->timer, 1); 1482 snd_timer_interrupt(substream->timer, 1);
1579 if (runtime->sleep_min)
1580 snd_pcm_tick_prepare(substream);
1581 _end: 1483 _end:
1582 snd_pcm_stream_unlock_irqrestore(substream, flags); 1484 snd_pcm_stream_unlock_irqrestore(substream, flags);
1583 if (runtime->transfer_ack_end) 1485 if (runtime->transfer_ack_end)
@@ -1587,6 +1489,71 @@ void snd_pcm_period_elapsed(struct snd_pcm_substream *substream)
1587 1489
1588EXPORT_SYMBOL(snd_pcm_period_elapsed); 1490EXPORT_SYMBOL(snd_pcm_period_elapsed);
1589 1491
1492/*
1493 * Wait until avail_min data becomes available
1494 * Returns a negative error code if any error occurs during operation.
1495 * The available space is stored on availp. When err = 0 and avail = 0
1496 * on the capture stream, it indicates the stream is in DRAINING state.
1497 */
1498static int wait_for_avail_min(struct snd_pcm_substream *substream,
1499 snd_pcm_uframes_t *availp)
1500{
1501 struct snd_pcm_runtime *runtime = substream->runtime;
1502 int is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
1503 wait_queue_t wait;
1504 int err = 0;
1505 snd_pcm_uframes_t avail = 0;
1506 long tout;
1507
1508 init_waitqueue_entry(&wait, current);
1509 add_wait_queue(&runtime->sleep, &wait);
1510 for (;;) {
1511 if (signal_pending(current)) {
1512 err = -ERESTARTSYS;
1513 break;
1514 }
1515 set_current_state(TASK_INTERRUPTIBLE);
1516 snd_pcm_stream_unlock_irq(substream);
1517 tout = schedule_timeout(msecs_to_jiffies(10000));
1518 snd_pcm_stream_lock_irq(substream);
1519 switch (runtime->status->state) {
1520 case SNDRV_PCM_STATE_SUSPENDED:
1521 err = -ESTRPIPE;
1522 goto _endloop;
1523 case SNDRV_PCM_STATE_XRUN:
1524 err = -EPIPE;
1525 goto _endloop;
1526 case SNDRV_PCM_STATE_DRAINING:
1527 if (is_playback)
1528 err = -EPIPE;
1529 else
1530 avail = 0; /* indicate draining */
1531 goto _endloop;
1532 case SNDRV_PCM_STATE_OPEN:
1533 case SNDRV_PCM_STATE_SETUP:
1534 case SNDRV_PCM_STATE_DISCONNECTED:
1535 err = -EBADFD;
1536 goto _endloop;
1537 }
1538 if (!tout) {
1539 snd_printd("%s write error (DMA or IRQ trouble?)\n",
1540 is_playback ? "playback" : "capture");
1541 err = -EIO;
1542 break;
1543 }
1544 if (is_playback)
1545 avail = snd_pcm_playback_avail(runtime);
1546 else
1547 avail = snd_pcm_capture_avail(runtime);
1548 if (avail >= runtime->control->avail_min)
1549 break;
1550 }
1551 _endloop:
1552 remove_wait_queue(&runtime->sleep, &wait);
1553 *availp = avail;
1554 return err;
1555}
1556
1590static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream, 1557static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream,
1591 unsigned int hwoff, 1558 unsigned int hwoff,
1592 unsigned long data, unsigned int off, 1559 unsigned long data, unsigned int off,
@@ -1624,8 +1591,6 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
1624 1591
1625 if (size == 0) 1592 if (size == 0)
1626 return 0; 1593 return 0;
1627 if (size > runtime->xfer_align)
1628 size -= size % runtime->xfer_align;
1629 1594
1630 snd_pcm_stream_lock_irq(substream); 1595 snd_pcm_stream_lock_irq(substream);
1631 switch (runtime->status->state) { 1596 switch (runtime->status->state) {
@@ -1648,84 +1613,18 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
1648 snd_pcm_uframes_t frames, appl_ptr, appl_ofs; 1613 snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
1649 snd_pcm_uframes_t avail; 1614 snd_pcm_uframes_t avail;
1650 snd_pcm_uframes_t cont; 1615 snd_pcm_uframes_t cont;
1651 if (runtime->sleep_min == 0 && runtime->status->state == SNDRV_PCM_STATE_RUNNING) 1616 if (runtime->status->state == SNDRV_PCM_STATE_RUNNING)
1652 snd_pcm_update_hw_ptr(substream); 1617 snd_pcm_update_hw_ptr(substream);
1653 avail = snd_pcm_playback_avail(runtime); 1618 avail = snd_pcm_playback_avail(runtime);
1654 if (((avail < runtime->control->avail_min && size > avail) || 1619 if (!avail) {
1655 (size >= runtime->xfer_align && avail < runtime->xfer_align))) {
1656 wait_queue_t wait;
1657 enum { READY, SIGNALED, ERROR, SUSPENDED, EXPIRED, DROPPED } state;
1658 long tout;
1659
1660 if (nonblock) { 1620 if (nonblock) {
1661 err = -EAGAIN; 1621 err = -EAGAIN;
1662 goto _end_unlock; 1622 goto _end_unlock;
1663 } 1623 }
1664 1624 err = wait_for_avail_min(substream, &avail);
1665 init_waitqueue_entry(&wait, current); 1625 if (err < 0)
1666 add_wait_queue(&runtime->sleep, &wait);
1667 while (1) {
1668 if (signal_pending(current)) {
1669 state = SIGNALED;
1670 break;
1671 }
1672 set_current_state(TASK_INTERRUPTIBLE);
1673 snd_pcm_stream_unlock_irq(substream);
1674 tout = schedule_timeout(10 * HZ);
1675 snd_pcm_stream_lock_irq(substream);
1676 if (tout == 0) {
1677 if (runtime->status->state != SNDRV_PCM_STATE_PREPARED &&
1678 runtime->status->state != SNDRV_PCM_STATE_PAUSED) {
1679 state = runtime->status->state == SNDRV_PCM_STATE_SUSPENDED ? SUSPENDED : EXPIRED;
1680 break;
1681 }
1682 }
1683 switch (runtime->status->state) {
1684 case SNDRV_PCM_STATE_XRUN:
1685 case SNDRV_PCM_STATE_DRAINING:
1686 state = ERROR;
1687 goto _end_loop;
1688 case SNDRV_PCM_STATE_SUSPENDED:
1689 state = SUSPENDED;
1690 goto _end_loop;
1691 case SNDRV_PCM_STATE_SETUP:
1692 state = DROPPED;
1693 goto _end_loop;
1694 default:
1695 break;
1696 }
1697 avail = snd_pcm_playback_avail(runtime);
1698 if (avail >= runtime->control->avail_min) {
1699 state = READY;
1700 break;
1701 }
1702 }
1703 _end_loop:
1704 remove_wait_queue(&runtime->sleep, &wait);
1705
1706 switch (state) {
1707 case ERROR:
1708 err = -EPIPE;
1709 goto _end_unlock;
1710 case SUSPENDED:
1711 err = -ESTRPIPE;
1712 goto _end_unlock;
1713 case SIGNALED:
1714 err = -ERESTARTSYS;
1715 goto _end_unlock;
1716 case EXPIRED:
1717 snd_printd("playback write error (DMA or IRQ trouble?)\n");
1718 err = -EIO;
1719 goto _end_unlock;
1720 case DROPPED:
1721 err = -EBADFD;
1722 goto _end_unlock; 1626 goto _end_unlock;
1723 default:
1724 break;
1725 }
1726 } 1627 }
1727 if (avail > runtime->xfer_align)
1728 avail -= avail % runtime->xfer_align;
1729 frames = size > avail ? avail : size; 1628 frames = size > avail ? avail : size;
1730 cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size; 1629 cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size;
1731 if (frames > cont) 1630 if (frames > cont)
@@ -1763,9 +1662,6 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
1763 if (err < 0) 1662 if (err < 0)
1764 goto _end_unlock; 1663 goto _end_unlock;
1765 } 1664 }
1766 if (runtime->sleep_min &&
1767 runtime->status->state == SNDRV_PCM_STATE_RUNNING)
1768 snd_pcm_tick_prepare(substream);
1769 } 1665 }
1770 _end_unlock: 1666 _end_unlock:
1771 snd_pcm_stream_unlock_irq(substream); 1667 snd_pcm_stream_unlock_irq(substream);
@@ -1893,8 +1789,6 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
1893 1789
1894 if (size == 0) 1790 if (size == 0)
1895 return 0; 1791 return 0;
1896 if (size > runtime->xfer_align)
1897 size -= size % runtime->xfer_align;
1898 1792
1899 snd_pcm_stream_lock_irq(substream); 1793 snd_pcm_stream_lock_irq(substream);
1900 switch (runtime->status->state) { 1794 switch (runtime->status->state) {
@@ -1924,91 +1818,25 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
1924 snd_pcm_uframes_t frames, appl_ptr, appl_ofs; 1818 snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
1925 snd_pcm_uframes_t avail; 1819 snd_pcm_uframes_t avail;
1926 snd_pcm_uframes_t cont; 1820 snd_pcm_uframes_t cont;
1927 if (runtime->sleep_min == 0 && runtime->status->state == SNDRV_PCM_STATE_RUNNING) 1821 if (runtime->status->state == SNDRV_PCM_STATE_RUNNING)
1928 snd_pcm_update_hw_ptr(substream); 1822 snd_pcm_update_hw_ptr(substream);
1929 __draining:
1930 avail = snd_pcm_capture_avail(runtime); 1823 avail = snd_pcm_capture_avail(runtime);
1931 if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { 1824 if (!avail) {
1932 if (avail < runtime->xfer_align) { 1825 if (runtime->status->state ==
1933 err = -EPIPE; 1826 SNDRV_PCM_STATE_DRAINING) {
1827 snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
1934 goto _end_unlock; 1828 goto _end_unlock;
1935 } 1829 }
1936 } else if ((avail < runtime->control->avail_min && size > avail) ||
1937 (size >= runtime->xfer_align && avail < runtime->xfer_align)) {
1938 wait_queue_t wait;
1939 enum { READY, SIGNALED, ERROR, SUSPENDED, EXPIRED, DROPPED } state;
1940 long tout;
1941
1942 if (nonblock) { 1830 if (nonblock) {
1943 err = -EAGAIN; 1831 err = -EAGAIN;
1944 goto _end_unlock; 1832 goto _end_unlock;
1945 } 1833 }
1946 1834 err = wait_for_avail_min(substream, &avail);
1947 init_waitqueue_entry(&wait, current); 1835 if (err < 0)
1948 add_wait_queue(&runtime->sleep, &wait);
1949 while (1) {
1950 if (signal_pending(current)) {
1951 state = SIGNALED;
1952 break;
1953 }
1954 set_current_state(TASK_INTERRUPTIBLE);
1955 snd_pcm_stream_unlock_irq(substream);
1956 tout = schedule_timeout(10 * HZ);
1957 snd_pcm_stream_lock_irq(substream);
1958 if (tout == 0) {
1959 if (runtime->status->state != SNDRV_PCM_STATE_PREPARED &&
1960 runtime->status->state != SNDRV_PCM_STATE_PAUSED) {
1961 state = runtime->status->state == SNDRV_PCM_STATE_SUSPENDED ? SUSPENDED : EXPIRED;
1962 break;
1963 }
1964 }
1965 switch (runtime->status->state) {
1966 case SNDRV_PCM_STATE_XRUN:
1967 state = ERROR;
1968 goto _end_loop;
1969 case SNDRV_PCM_STATE_SUSPENDED:
1970 state = SUSPENDED;
1971 goto _end_loop;
1972 case SNDRV_PCM_STATE_DRAINING:
1973 goto __draining;
1974 case SNDRV_PCM_STATE_SETUP:
1975 state = DROPPED;
1976 goto _end_loop;
1977 default:
1978 break;
1979 }
1980 avail = snd_pcm_capture_avail(runtime);
1981 if (avail >= runtime->control->avail_min) {
1982 state = READY;
1983 break;
1984 }
1985 }
1986 _end_loop:
1987 remove_wait_queue(&runtime->sleep, &wait);
1988
1989 switch (state) {
1990 case ERROR:
1991 err = -EPIPE;
1992 goto _end_unlock;
1993 case SUSPENDED:
1994 err = -ESTRPIPE;
1995 goto _end_unlock;
1996 case SIGNALED:
1997 err = -ERESTARTSYS;
1998 goto _end_unlock;
1999 case EXPIRED:
2000 snd_printd("capture read error (DMA or IRQ trouble?)\n");
2001 err = -EIO;
2002 goto _end_unlock;
2003 case DROPPED:
2004 err = -EBADFD;
2005 goto _end_unlock; 1836 goto _end_unlock;
2006 default: 1837 if (!avail)
2007 break; 1838 continue; /* draining */
2008 }
2009 } 1839 }
2010 if (avail > runtime->xfer_align)
2011 avail -= avail % runtime->xfer_align;
2012 frames = size > avail ? avail : size; 1840 frames = size > avail ? avail : size;
2013 cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size; 1841 cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size;
2014 if (frames > cont) 1842 if (frames > cont)
@@ -2040,9 +1868,6 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
2040 offset += frames; 1868 offset += frames;
2041 size -= frames; 1869 size -= frames;
2042 xfer += frames; 1870 xfer += frames;
2043 if (runtime->sleep_min &&
2044 runtime->status->state == SNDRV_PCM_STATE_RUNNING)
2045 snd_pcm_tick_prepare(substream);
2046 } 1871 }
2047 _end_unlock: 1872 _end_unlock:
2048 snd_pcm_stream_unlock_irq(substream); 1873 snd_pcm_stream_unlock_irq(substream);
generated by cgit v1.2.2 (git 2.25.0) at 2025-06-03 14:00:49 -0400