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[ALSA] sound/pci: fix-up sleeping paths 

ENS1370/1+ driver,ES1968 driver,Intel8x0 driver,VIA82xx driver
VIA82xx-modem driver,AC97 Codec,ALI5451 driver,CS46xx driver
MIXART driver,RME HDSP driver,Trident driver,YMFPCI driver
Description: Fix-up sleeping in sound/pci. These changes fall under the
following two categories:

        1) Replace schedule_timeout() with msleep() to guarantee the
        task delays as expected. This also involved replacing/removing
        custom sleep functions.
        2) Do not assume jiffies will only increment by one if you
        request a 1 jiffy sleep, i.e. use time_after/time_before in
        while loops.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Nishanth Aravamudan 2005-07-09 10:13:22 +02:00 committed by Jaroslav Kysela
parent 072c01194d
commit ef21ca24fa
12 changed files with 42 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
sound/pci/ac97/ac97_codec.c
View File

@ -2227,6 +2227,7 @@ void snd_ac97_restore_iec958(ac97_t *ac97)
void snd_ac97_resume(ac97_t *ac97)
{
int i;
unsigned long end_time;
if (ac97->bus->ops->reset) {
ac97->bus->ops->reset(ac97);
@ -2244,26 +2245,26 @@ void snd_ac97_resume(ac97_t *ac97)
snd_ac97_write(ac97, AC97_POWERDOWN, ac97->regs[AC97_POWERDOWN]);
if (ac97_is_audio(ac97)) {
ac97->bus->ops->write(ac97, AC97_MASTER, 0x8101);
for (i = HZ/10; i >= 0; i--) {
end_time = jiffies + msecs_to_jiffies(100);
do {
if (snd_ac97_read(ac97, AC97_MASTER) == 0x8101)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after_eq(end_time, jiffies));
/* FIXME: extra delay */
ac97->bus->ops->write(ac97, AC97_MASTER, 0x8000);
if (snd_ac97_read(ac97, AC97_MASTER) != 0x8000) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/4);
}
if (snd_ac97_read(ac97, AC97_MASTER) != 0x8000)
msleep(250);
} else {
for (i = HZ/10; i >= 0; i--) {
end_time = jiffies + msecs_to_jiffies(100);
do {
unsigned short val = snd_ac97_read(ac97, AC97_EXTENDED_MID);
if (val != 0xffff && (val & 1) != 0)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after_eq(end_time, jiffies));
}
__reset_ready:

4
sound/pci/ali5451/ali5451.c
View File

@ -399,7 +399,7 @@ static int snd_ali_codec_ready( ali_t *codec,
unsigned long end_time;
unsigned int res;
end_time = jiffies + 10 * (HZ >> 2);
end_time = jiffies + 10 * msecs_to_jiffies(250);
do {
res = snd_ali_5451_peek(codec,port);
if (! (res & 0x8000))
@ -422,7 +422,7 @@ static int snd_ali_stimer_ready(ali_t *codec, int sched)
dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
end_time = jiffies + 10 * (HZ >> 2);
end_time = jiffies + 10 * msecs_to_jiffies(250);
do {
dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
if (dwChk2 != dwChk1)

15
sound/pci/cs46xx/cs46xx_lib.c
View File

@ -2400,8 +2400,7 @@ static void snd_cs46xx_codec_reset (ac97_t * ac97)
if ((err = snd_ac97_read(ac97, AC97_REC_GAIN)) == 0x8a05)
return;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/100);
msleep(10);
} while (time_after_eq(end_time, jiffies));
snd_printk("CS46xx secondary codec dont respond!\n");
@ -2435,8 +2434,7 @@ static int __devinit cs46xx_detect_codec(cs46xx_t *chip, int codec)
err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97[codec]);
return err;
}
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(HZ/100);
msleep(10);
}
snd_printdd("snd_cs46xx: codec %d detection timeout\n", codec);
return -ENXIO;
@ -3018,8 +3016,7 @@ static int snd_cs46xx_chip_init(cs46xx_t *chip)
/*
* Wait until the PLL has stabilized.
*/
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/10); /* 100ms */
msleep(100);
/*
* Turn on clocking of the core so that we can setup the serial ports.
@ -3072,8 +3069,7 @@ static int snd_cs46xx_chip_init(cs46xx_t *chip)
*/
if (snd_cs46xx_peekBA0(chip, BA0_ACSTS) & ACSTS_CRDY)
goto ok1;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((HZ+99)/100);
msleep(10);
}
@ -3122,8 +3118,7 @@ static int snd_cs46xx_chip_init(cs46xx_t *chip)
*/
if ((snd_cs46xx_peekBA0(chip, BA0_ACISV) & (ACISV_ISV3 | ACISV_ISV4)) == (ACISV_ISV3 | ACISV_ISV4))
goto ok2;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((HZ+99)/100);
msleep(10);
}
#ifndef CONFIG_SND_CS46XX_NEW_DSP

12
sound/pci/ens1370.c
View File

@ -2018,21 +2018,11 @@ static int __devinit snd_ensoniq_create(snd_card_t * card,
if (pci->vendor == es1371_ac97_reset_hack[idx].vid &&
pci->device == es1371_ac97_reset_hack[idx].did &&
ensoniq->rev == es1371_ac97_reset_hack[idx].rev) {
unsigned long tmo;
signed long tmo2;
ensoniq->cssr |= ES_1371_ST_AC97_RST;
outl(ensoniq->cssr, ES_REG(ensoniq, STATUS));
/* need to delay around 20ms(bleech) to give
some CODECs enough time to wakeup */
tmo = jiffies + (HZ / 50) + 1;
while (1) {
tmo2 = tmo - jiffies;
if (tmo2 <= 0)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(tmo2);
}
msleep(20);
break;
}
/* AC'97 warm reset to start the bitclk */

14
sound/pci/es1968.c
View File

@ -664,11 +664,6 @@ static inline u16 maestro_read(es1968_t *chip, u16 reg)
return result;
}
#define big_mdelay(msec) do {\
set_current_state(TASK_UNINTERRUPTIBLE);\
schedule_timeout(((msec) * HZ + 999) / 1000);\
} while (0)
/* Wait for the codec bus to be free */
static int snd_es1968_ac97_wait(es1968_t *chip)
{
@ -1809,8 +1804,7 @@ static void __devinit es1968_measure_clock(es1968_t *chip)
snd_es1968_trigger_apu(chip, apu, ESM_APU_16BITLINEAR);
do_gettimeofday(&start_time);
spin_unlock_irq(&chip->reg_lock);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ / 20); /* 50 msec */
msleep(50);
spin_lock_irq(&chip->reg_lock);
offset = __apu_get_register(chip, apu, 5);
do_gettimeofday(&stop_time);
@ -2093,7 +2087,7 @@ static void snd_es1968_ac97_reset(es1968_t *chip)
outw(0x0000, ioaddr + 0x60); /* write 0 to gpio 0 */
udelay(20);
outw(0x0001, ioaddr + 0x60); /* write 1 to gpio 1 */
big_mdelay(20);
msleep(20);
outw(save_68 | 0x1, ioaddr + 0x68); /* now restore .. */
outw((inw(ioaddr + 0x38) & 0xfffc) | 0x1, ioaddr + 0x38);
@ -2109,7 +2103,7 @@ static void snd_es1968_ac97_reset(es1968_t *chip)
outw(0x0001, ioaddr + 0x60); /* write 1 to gpio */
udelay(20);
outw(0x0009, ioaddr + 0x60); /* write 9 to gpio */
big_mdelay(500);
msleep(500);
//outw(inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38);
outw(inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a);
outw(inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c);
@ -2135,7 +2129,7 @@ static void snd_es1968_ac97_reset(es1968_t *chip)
if (w > 10000) {
outb(inb(ioaddr + 0x37) | 0x08, ioaddr + 0x37); /* do a software reset */
big_mdelay(500); /* oh my.. */
msleep(500); /* oh my.. */
outb(inb(ioaddr + 0x37) & ~0x08,
ioaddr + 0x37);
udelay(1);

3
sound/pci/intel8x0.c
View File

@ -2464,8 +2464,7 @@ static void __devinit intel8x0_measure_ac97_clock(intel8x0_t *chip)
}
do_gettimeofday(&start_time);
spin_unlock_irq(&chip->reg_lock);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ / 20);
msleep(50);
spin_lock_irq(&chip->reg_lock);
/* check the position */
pos = ichdev->fragsize1;

4
sound/pci/mixart/mixart.c
View File

@ -445,9 +445,9 @@ static int snd_mixart_trigger(snd_pcm_substream_t *subs, int cmd)
static int mixart_sync_nonblock_events(mixart_mgr_t *mgr)
{
int timeout = HZ;
unsigned long timeout = jiffies + HZ;
while (atomic_read(&mgr->msg_processed) > 0) {
if (! timeout--) {
if (time_after(jiffies, timeout)) {
snd_printk(KERN_ERR "mixart: cannot process nonblock events!\n");
return -EBUSY;
}

6
sound/pci/rme9652/hdsp.c
View File

@ -679,8 +679,7 @@ static int snd_hdsp_load_firmware_from_cache(hdsp_t *hdsp) {
}
if ((1000 / HZ) < 3000) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((3000 * HZ + 999) / 1000);
ssleep(3);
} else {
mdelay(3000);
}
@ -5080,8 +5079,7 @@ static int __devinit snd_hdsp_create(snd_card_t *card,
if (!is_9652 && !is_9632) {
/* we wait 2 seconds to let freshly inserted cardbus cards do their hardware init */
if ((1000 / HZ) < 2000) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((2000 * HZ + 999) / 1000);
ssleep(2);
} else {
mdelay(2000);
}

3
sound/pci/trident/trident_main.c
View File

@ -3153,8 +3153,7 @@ static int snd_trident_gameport_open(struct gameport *gameport, int mode)
switch (mode) {
case GAMEPORT_MODE_COOKED:
outb(GAMEPORT_MODE_ADC, TRID_REG(chip, GAMEPORT_GCR));
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1 + 20 * HZ / 1000); /* 20msec */
msleep(20);
return 0;
case GAMEPORT_MODE_RAW:
outb(0, TRID_REG(chip, GAMEPORT_GCR));

13
sound/pci/via82xx.c
View File

@ -547,8 +547,7 @@ static void snd_via82xx_codec_wait(ac97_t *ac97)
int err;
err = snd_via82xx_codec_ready(chip, ac97->num);
/* here we need to wait fairly for long time.. */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/2);
msleep(500);
}
static void snd_via82xx_codec_write(ac97_t *ac97,
@ -1847,7 +1846,7 @@ static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
static int snd_via82xx_chip_init(via82xx_t *chip)
{
unsigned int val;
int max_count;
unsigned long end_time;
unsigned char pval;
#if 0 /* broken on K7M? */
@ -1889,14 +1888,14 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
}
/* wait until codec ready */
max_count = ((3 * HZ) / 4) + 1;
end_time = jiffies + msecs_to_jiffies(750);
do {
pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
} while (--max_count > 0);
} while (time_before(jiffies, end_time));
if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
snd_printk("AC'97 codec is not ready [0x%x]\n", val);
@ -1905,7 +1904,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
VIA_REG_AC97_SECONDARY_VALID |
(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
max_count = ((3 * HZ) / 4) + 1;
end_time = jiffies + msecs_to_jiffies(750);
snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
VIA_REG_AC97_SECONDARY_VALID |
(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
@ -1916,7 +1915,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
}
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
} while (--max_count > 0);
} while (time_before(jiffies, end_time));
/* This is ok, the most of motherboards have only one codec */
__ac97_ok2:

13
sound/pci/via82xx_modem.c
View File

@ -408,8 +408,7 @@ static void snd_via82xx_codec_wait(ac97_t *ac97)
int err;
err = snd_via82xx_codec_ready(chip, ac97->num);
/* here we need to wait fairly for long time.. */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/2);
msleep(500);
}
static void snd_via82xx_codec_write(ac97_t *ac97,
@ -923,7 +922,7 @@ static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
static int snd_via82xx_chip_init(via82xx_t *chip)
{
unsigned int val;
int max_count;
unsigned long end_time;
unsigned char pval;
pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
@ -962,14 +961,14 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
}
/* wait until codec ready */
max_count = ((3 * HZ) / 4) + 1;
end_time = jiffies + msecs_to_jiffies(750);
do {
pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
} while (--max_count > 0);
} while (time_before(jiffies, end_time));
if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
snd_printk("AC'97 codec is not ready [0x%x]\n", val);
@ -977,7 +976,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
VIA_REG_AC97_SECONDARY_VALID |
(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
max_count = ((3 * HZ) / 4) + 1;
end_time = jiffies + msecs_to_jiffies(750);
snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
VIA_REG_AC97_SECONDARY_VALID |
(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
@ -988,7 +987,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
}
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
} while (--max_count > 0);
} while (time_before(jiffies, end_time));
/* This is ok, the most of motherboards have only one codec */
__ac97_ok2:

6
sound/pci/ymfpci/ymfpci_main.c
View File

@ -84,16 +84,16 @@ static inline void snd_ymfpci_writel(ymfpci_t *chip, u32 offset, u32 val)
static int snd_ymfpci_codec_ready(ymfpci_t *chip, int secondary)
{
signed long end_time;
unsigned long end_time;
u32 reg = secondary ? YDSXGR_SECSTATUSADR : YDSXGR_PRISTATUSADR;
end_time = (jiffies + ((3 * HZ) / 4)) + 1;
end_time = jiffies + msecs_to_jiffies(750);
do {
if ((snd_ymfpci_readw(chip, reg) & 0x8000) == 0)
return 0;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
} while (end_time - (signed long)jiffies >= 0);
} while (time_before(jiffies, end_time));
snd_printk("codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_ymfpci_readw(chip, reg));
return -EBUSY;
}