[ALSA] Fix schedule_timeout usage

Use schedule_timeout_{,un}interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size.  Also use
human-time conversion functions instead of hard-coded division to avoid
rounding issues.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/seq/seq_instr.c

@@ -109,8 +109,7 @@ void snd_seq_instr_list_free(snd_seq_kinstr_list_t **list_ptr)
 			spin_lock_irqsave(&list->lock, flags);
 			while (instr->use) {
 				spin_unlock_irqrestore(&list->lock, flags);
-				set_current_state(TASK_INTERRUPTIBLE);
-				schedule_timeout(1);
+				schedule_timeout_interruptible(1);
 				spin_lock_irqsave(&list->lock, flags);
 			}				
 			spin_unlock_irqrestore(&list->lock, flags);
@@ -199,10 +198,8 @@ int snd_seq_instr_list_free_cond(snd_seq_kinstr_list_t *list,
 		while (flist) {
 			instr = flist;
 			flist = instr->next;
-			while (instr->use) {
-				set_current_state(TASK_INTERRUPTIBLE);
-				schedule_timeout(1);
-			}				
+			while (instr->use)
+				schedule_timeout_interruptible(1);
 			if (snd_seq_instr_free(instr, atomic)<0)
 				snd_printk(KERN_WARNING "instrument free problem\n");
 			instr = next;
@@ -554,8 +551,7 @@ static int instr_free(snd_seq_kinstr_ops_t *ops,
 			instr->ops->notify(instr->ops->private_data, instr, SNDRV_SEQ_INSTR_NOTIFY_REMOVE);
 		while (instr->use) {
 			spin_unlock_irqrestore(&list->lock, flags);
-			set_current_state(TASK_INTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_interruptible(1);
 			spin_lock_irqsave(&list->lock, flags);
 		}				
 		spin_unlock_irqrestore(&list->lock, flags);

sound/core/seq/seq_lock.c

@@ -39,8 +39,7 @@ void snd_use_lock_sync_helper(snd_use_lock_t *lockp, const char *file, int line)
 			snd_printk(KERN_WARNING "seq_lock: timeout [%d left] in %s:%d\n", atomic_read(lockp), file, line);
 			break;
 		}
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 		max_count--;
 	}
 }

sound/core/seq/seq_memory.c

@@ -423,8 +423,7 @@ int snd_seq_pool_done(pool_t *pool)
 			snd_printk(KERN_WARNING "snd_seq_pool_done timeout: %d cells remain\n", atomic_read(&pool->counter));
 			break;
 		}
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 		max_count--;
 	}
 	

sound/i2c/cs8427.c

@@ -302,8 +302,7 @@ static void snd_cs8427_reset(snd_i2c_device_t *cs8427)
 		snd_i2c_unlock(cs8427->bus);
 		if (!(data & CS8427_UNLOCK))
 			break;
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	}
 	snd_i2c_lock(cs8427->bus);
 	chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~CS8427_RXDMASK;

sound/isa/ad1848/ad1848_lib.c

@@ -243,8 +243,7 @@ static void snd_ad1848_mce_down(ad1848_t *chip)
 			snd_printk(KERN_ERR "mce_down - auto calibration time out (2)\n");
 			return;
 		}
-		set_current_state(TASK_INTERRUPTIBLE);
-		time = schedule_timeout(time);
+		time = schedule_timeout_interruptible(time);
 		spin_lock_irqsave(&chip->reg_lock, flags);
 	}
 #if 0
@@ -257,8 +256,7 @@ static void snd_ad1848_mce_down(ad1848_t *chip)
 			snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
 			return;
 		}
-		set_current_state(TASK_INTERRUPTIBLE);
-		time = schedule_timeout(time);
+		time = schedule_timeout_interruptible(time);
 		spin_lock_irqsave(&chip->reg_lock, flags);
 	}
 	spin_unlock_irqrestore(&chip->reg_lock, flags);

sound/isa/gus/gus_pcm.c

@@ -333,8 +333,7 @@ static int snd_gf1_pcm_poke_block(snd_gus_card_t *gus, unsigned char *buf,
 			}
 		}
 		if (count > 0 && !in_interrupt()) {
-			set_current_state(TASK_INTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_interruptible(1);
 			if (signal_pending(current))
 				return -EAGAIN;
 		}

sound/isa/sb/emu8000.c

@@ -135,8 +135,7 @@ static void __init
 snd_emu8000_read_wait(emu8000_t *emu)
 {
 	while ((EMU8000_SMALR_READ(emu) & 0x80000000) != 0) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_interruptible(1);
 		if (signal_pending(current))
 			break;
 	}
@@ -148,8 +147,7 @@ static void __init
 snd_emu8000_write_wait(emu8000_t *emu)
 {
 	while ((EMU8000_SMALW_READ(emu) & 0x80000000) != 0) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_interruptible(1);
 		if (signal_pending(current))
 			break;
 	}
@@ -437,8 +435,7 @@ size_dram(emu8000_t *emu)
 	for (i = 0; i < 10000; i++) {
 		if ((EMU8000_SMALW_READ(emu) & 0x80000000) == 0)
 			break;
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_interruptible(1);
 		if (signal_pending(current))
 			break;
 	}

sound/isa/sb/emu8000_patch.c

@@ -109,8 +109,7 @@ static void
 snd_emu8000_write_wait(emu8000_t *emu)
 {
 	while ((EMU8000_SMALW_READ(emu) & 0x80000000) != 0) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_interruptible(1);
 		if (signal_pending(current))
 			break;
 	}

sound/isa/sb/emu8000_pcm.c

@@ -117,8 +117,7 @@ snd_emu8000_write_wait(emu8000_t *emu, int can_schedule)
 {
 	while ((EMU8000_SMALW_READ(emu) & 0x80000000) != 0) {
 		if (can_schedule) {
-			set_current_state(TASK_INTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_interruptible(1);
 			if (signal_pending(current))
 				break;
 		}

sound/isa/sscape.c

@@ -342,19 +342,6 @@ static void soundscape_free(snd_card_t * c)
 	free_dma(sscape->chip->dma1);
 }
 
-/*
- * Put this process into an idle wait-state for a certain number
- * of "jiffies". The process can almost certainly be rescheduled
- * while we're waiting, and so we must NOT be holding any spinlocks
- * when we call this function. If we are then we risk DEADLOCK in
- * SMP (Ha!) or pre-emptible kernels.
- */
-static inline void sleep(long jiffs, int state)
-{
-	set_current_state(state);
-	schedule_timeout(jiffs);
-}
-
 /*
  * Tell the SoundScape to begin a DMA tranfer using the given channel.
  * All locking issues are left to the caller.
@@ -392,7 +379,7 @@ static int obp_startup_ack(struct soundscape *s, unsigned timeout)
 		unsigned long flags;
 		unsigned char x;
 
-		sleep(1, TASK_INTERRUPTIBLE);
+		schedule_timeout_interruptible(1);
 
 		spin_lock_irqsave(&s->lock, flags);
 		x = inb(HOST_DATA_IO(s->io_base));
@@ -419,7 +406,7 @@ static int host_startup_ack(struct soundscape *s, unsigned timeout)
 		unsigned long flags;
 		unsigned char x;
 
-		sleep(1, TASK_INTERRUPTIBLE);
+		schedule_timeout_interruptible(1);
 
 		spin_lock_irqsave(&s->lock, flags);
 		x = inb(HOST_DATA_IO(s->io_base));

sound/isa/wavefront/wavefront_synth.c

@@ -275,8 +275,7 @@ static int
 wavefront_sleep (int limit)
 
 {
-	set_current_state(TASK_INTERRUPTIBLE);
-	schedule_timeout(limit);
+	schedule_timeout_interruptible(limit);
 
 	return signal_pending(current);
 }
@@ -1788,8 +1787,7 @@ wavefront_should_cause_interrupt (snd_wavefront_t *dev,
 	outb (val,port);
 	spin_unlock_irq(&dev->irq_lock);
 	while (1) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		if ((timeout = schedule_timeout(timeout)) == 0)
+		if ((timeout = schedule_timeout_interruptible(timeout)) == 0)
 			return;
 		if (dev->irq_ok)
 			return;

sound/pci/ac97/ac97_codec.c

@@ -1745,8 +1745,7 @@ static int ac97_reset_wait(ac97_t *ac97, int timeout, int with_modem)
 			if ((snd_ac97_read(ac97, AC97_REC_GAIN) & 0x7fff) == 0x0a05)
 				return 0;
 		}
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	} while (time_after_eq(end_time, jiffies));
 	return -ENODEV;
 }
@@ -1992,8 +1991,7 @@ int snd_ac97_mixer(ac97_bus_t *bus, ac97_template_t *template, ac97_t **rac97)
 		do {
 			if ((snd_ac97_read(ac97, AC97_POWERDOWN) & 0x0f) == 0x0f)
 				goto __ready_ok;
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_uninterruptible(1);
 		} while (time_after_eq(end_time, jiffies));
 		snd_printk(KERN_WARNING "AC'97 %d analog subsections not ready\n", ac97->num);
 	}
@@ -2025,8 +2023,7 @@ int snd_ac97_mixer(ac97_bus_t *bus, ac97_template_t *template, ac97_t **rac97)
 		do {
 			if ((snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS) & tmp) == tmp)
 				goto __ready_ok;
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_uninterruptible(1);
 		} while (time_after_eq(end_time, jiffies));
 		snd_printk(KERN_WARNING "MC'97 %d converters and GPIO not ready (0x%x)\n", ac97->num, snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS));
 	}
@@ -2260,8 +2257,7 @@ void snd_ac97_resume(ac97_t *ac97)
 		do {
 			if (snd_ac97_read(ac97, AC97_MASTER) == 0x8101)
 				break;
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_uninterruptible(1);
 		} while (time_after_eq(end_time, jiffies));
 		/* FIXME: extra delay */
 		ac97->bus->ops->write(ac97, AC97_MASTER, 0x8000);
@@ -2273,8 +2269,7 @@ void snd_ac97_resume(ac97_t *ac97)
 			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);
+			schedule_timeout_uninterruptible(1);
 		} while (time_after_eq(end_time, jiffies));
 	}
 __reset_ready:

sound/pci/ali5451/ali5451.c

@@ -398,10 +398,8 @@ static int snd_ali_codec_ready(	ali_t *codec,
 		res = snd_ali_5451_peek(codec,port);
 		if (! (res & 0x8000))
 			return 0;
-		if (sched) {
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1);
-		}
+		if (sched)
+			schedule_timeout_uninterruptible(1);
 	} while (time_after_eq(end_time, jiffies));
 	snd_ali_5451_poke(codec, port, res & ~0x8000);
 	snd_printdd("ali_codec_ready: codec is not ready.\n ");
@@ -421,10 +419,8 @@ static int snd_ali_stimer_ready(ali_t *codec, int sched)
 		dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
 		if (dwChk2 != dwChk1)
 			return 0;
-		if (sched) {
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1);
-		}
+		if (sched)
+			schedule_timeout_uninterruptible(1);
 	} while (time_after_eq(end_time, jiffies));
 	snd_printk(KERN_ERR "ali_stimer_read: stimer is not ready.\n");
 	return -EIO;

sound/pci/atiixp.c

@@ -330,8 +330,7 @@ static int snd_atiixp_update_bits(atiixp_t *chip, unsigned int reg,
 
 /* delay for one tick */
 #define do_delay() do { \
-	set_current_state(TASK_UNINTERRUPTIBLE); \
-	schedule_timeout(1); \
+	schedule_timeout_uninterruptible(1); \
 } while (0)
 
 

sound/pci/atiixp_modem.c

@@ -307,8 +307,7 @@ static int snd_atiixp_update_bits(atiixp_t *chip, unsigned int reg,
 
 /* delay for one tick */
 #define do_delay() do { \
-	set_current_state(TASK_UNINTERRUPTIBLE); \
-	schedule_timeout(1); \
+	schedule_timeout_uninterruptible(1); \
 } while (0)
 
 

sound/pci/cs4281.c

@@ -523,8 +523,7 @@ static void snd_cs4281_delay(unsigned int delay)
 			delay = 1;
 		end_time = jiffies + delay;
 		do {
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_uninterruptible(1);
 		} while (time_after_eq(end_time, jiffies));
 	} else {
 		udelay(delay);
@@ -533,8 +532,7 @@ static void snd_cs4281_delay(unsigned int delay)
 
 static inline void snd_cs4281_delay_long(void)
 {
-	set_current_state(TASK_UNINTERRUPTIBLE);
-	schedule_timeout(1);
+	schedule_timeout_uninterruptible(1);
 }
 
 static inline void snd_cs4281_pokeBA0(cs4281_t *chip, unsigned long offset, unsigned int val)

sound/pci/ens1370.c

@@ -576,8 +576,7 @@ static void snd_es1370_codec_write(ak4531_t *ak4531,
 			outw(ES_1370_CODEC_WRITE(reg, val), ES_REG(ensoniq, 1370_CODEC));
 			return;
 		}
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	} while (time_after(end_time, jiffies));
 	snd_printk(KERN_ERR "codec write timeout, status = 0x%x\n", inl(ES_REG(ensoniq, STATUS)));
 }

sound/pci/fm801.c

@@ -1303,8 +1303,7 @@ static int __devinit snd_fm801_create(snd_card_t * card,
 	do {
 		if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8))
 			goto __ac97_secondary;
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	} while (time_after(timeout, jiffies));
 	snd_printk(KERN_ERR "Primary AC'97 codec not found\n");
 	snd_fm801_free(chip);
@@ -1329,8 +1328,7 @@ static int __devinit snd_fm801_create(snd_card_t * card,
 					goto __ac97_ok;
 				}
 			}
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1);
+			schedule_timeout_uninterruptible(1);
 		} while (time_after(timeout, jiffies));
 	}
 
@@ -1343,8 +1341,7 @@ static int __devinit snd_fm801_create(snd_card_t * card,
 	do {
 		if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8))
 			goto __ac97_ok;
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	} while (time_after(timeout, jiffies));
 	snd_printk(KERN_ERR "Primary AC'97 codec not responding\n");
 	snd_fm801_free(chip);

sound/pci/ice1712/pontis.c

@@ -794,8 +794,7 @@ static int __devinit pontis_init(ice1712_t *ice)
 	/* initialize WM8776 codec */
 	for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
 		wm_put(ice, wm_inits[i], wm_inits[i+1]);
-	set_current_state(TASK_UNINTERRUPTIBLE);
-	schedule_timeout(1);
+	schedule_timeout_uninterruptible(1);
 	for (i = 0; i < ARRAY_SIZE(wm_inits2); i += 2)
 		wm_put(ice, wm_inits2[i], wm_inits2[i+1]);
 

sound/pci/intel8x0.c

@@ -2144,8 +2144,7 @@ static void do_ali_reset(intel8x0_t *chip)
 }
 
 #define do_delay(chip) do {\
-	set_current_state(TASK_UNINTERRUPTIBLE);\
-	schedule_timeout(1);\
+	schedule_timeout_uninterruptible(1);\
 } while (0)
 
 static int snd_intel8x0_ich_chip_init(intel8x0_t *chip, int probing)

sound/pci/intel8x0m.c

@@ -890,8 +890,7 @@ static int __devinit snd_intel8x0_mixer(intel8x0_t *chip, int ac97_clock)
  */
 
 #define do_delay(chip) do {\
-	set_current_state(TASK_UNINTERRUPTIBLE);\
-	schedule_timeout(1);\
+	schedule_timeout_uninterruptible(1);\
 } while (0)
 
 static int snd_intel8x0m_ich_chip_init(intel8x0_t *chip, int probing)

sound/pci/maestro3.c

@@ -2046,8 +2046,7 @@ static void snd_m3_ac97_reset(m3_t *chip)
 		outw(0, io + GPIO_DATA);
 		outw(dir | GPO_PRIMARY_AC97, io + GPIO_DIRECTION);
 
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout((delay1 * HZ) / 1000);
+		schedule_timeout_uninterruptible(msecs_to_jiffies(delay1));
 
 		outw(GPO_PRIMARY_AC97, io + GPIO_DATA);
 		udelay(5);
@@ -2055,8 +2054,7 @@ static void snd_m3_ac97_reset(m3_t *chip)
 		outw(IO_SRAM_ENABLE | SERIAL_AC_LINK_ENABLE, io + RING_BUS_CTRL_A);
 		outw(~0, io + GPIO_MASK);
 
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout((delay2 * HZ) / 1000);
+		schedule_timeout_uninterruptible(msecs_to_jiffies(delay2));
 
 		if (! snd_m3_try_read_vendor(chip))
 			break;
@@ -2101,8 +2099,7 @@ static int __devinit snd_m3_mixer(m3_t *chip)
 
 	/* seems ac97 PCM needs initialization.. hack hack.. */
 	snd_ac97_write(chip->ac97, AC97_PCM, 0x8000 | (15 << 8) | 15);
-	set_current_state(TASK_UNINTERRUPTIBLE);
-	schedule_timeout(HZ / 10);
+	schedule_timeout_uninterruptible(msecs_to_jiffies(100));
 	snd_ac97_write(chip->ac97, AC97_PCM, 0);
 
 	memset(&id, 0, sizeof(id));

sound/pci/mixart/mixart.c

@@ -451,8 +451,7 @@ static int mixart_sync_nonblock_events(mixart_mgr_t *mgr)
 			snd_printk(KERN_ERR "mixart: cannot process nonblock events!\n");
 			return -EBUSY;
 		}
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	}
 	return 0;
 }

sound/pci/trident/trident_main.c

@@ -3207,8 +3207,7 @@ static inline void snd_trident_free_gameport(trident_t *chip) { }
  */
 static inline void do_delay(trident_t *chip)
 {
-	set_current_state(TASK_UNINTERRUPTIBLE);
-	schedule_timeout(1);
+	schedule_timeout_uninterruptible(1);
 }
 
 /*

sound/pci/via82xx.c

@@ -2027,8 +2027,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
 		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);
+		schedule_timeout_uninterruptible(1);
 	} while (time_before(jiffies, end_time));
 
 	if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
@@ -2047,8 +2046,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
 			chip->ac97_secondary = 1;
 			goto __ac97_ok2;
 		}
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_interruptible(1);
 	} while (time_before(jiffies, end_time));
 	/* This is ok, the most of motherboards have only one codec */
 

sound/pci/via82xx_modem.c

@@ -968,8 +968,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
 		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);
+		schedule_timeout_uninterruptible(1);
 	} while (time_before(jiffies, end_time));
 
 	if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
@@ -987,8 +986,7 @@ static int snd_via82xx_chip_init(via82xx_t *chip)
 			chip->ac97_secondary = 1;
 			goto __ac97_ok2;
 		}
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_interruptible(1);
 	} while (time_before(jiffies, end_time));
 	/* This is ok, the most of motherboards have only one codec */
 

sound/pci/ymfpci/ymfpci_main.c

@@ -92,7 +92,7 @@ static int snd_ymfpci_codec_ready(ymfpci_t *chip, int secondary)
 		if ((snd_ymfpci_readw(chip, reg) & 0x8000) == 0)
 			return 0;
 		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	} while (time_before(jiffies, end_time));
 	snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_ymfpci_readw(chip, reg));
 	return -EBUSY;
@@ -728,8 +728,7 @@ static void snd_ymfpci_irq_wait(ymfpci_t *chip)
 		init_waitqueue_entry(&wait, current);
 		add_wait_queue(&chip->interrupt_sleep, &wait);
 		atomic_inc(&chip->interrupt_sleep_count);
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(HZ/20);
+		schedule_timeout_uninterruptible(msecs_to_jiffies(50));
 		remove_wait_queue(&chip->interrupt_sleep, &wait);
 	}
 }

sound/usb/usbaudio.c

@@ -838,8 +838,7 @@ static int wait_clear_urbs(snd_usb_substream_t *subs)
 		}
 		if (! alive)
 			break;
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
+		schedule_timeout_uninterruptible(1);
 	} while (time_before(jiffies, end_time));
 	if (alive)
 		snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);