Merge tag 'sound-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "We have touched quite a lot of files but with fewer changes at this
  cycle; as you can see, most of changes are trivial fixes, especially
  constification patches.

  Among the massive attacks by constification gangs, we had a few core
  changes (mostly for ASoC core), as well the fixes and the updates by
  major vendors.

  Some highlights:

  ALSA core:

   - Fix possible races in control API user-TLV codes

   - Small cleanup of PCM core

  ASoC:

   - Continued work for componentization; still half-baked, but we're
     certainly progressing

   - Use of devres for jack detection GPIOs, rather as a cleanup

   - Jack detection support for Qualcomm MSM8916

   - Support for Allwinner H3, Cirrus Logic CS43130, Intel Kabylake
     systems with RT5663, Realtek RT274, TI TLV320AIC32x6 and Wolfson
     WM8523"

* tag 'sound-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (512 commits)
  ALSA: hda/ca0132 - Fix memory leak at error path
  ALSA: hda: Fix forget to free resource in error handling code path in hda_codec_driver_probe
  ASoC: cs43130: Fix unused compiler warnings for PM runtime
  ASoC: cs43130: Fix possible Oops with invalid dev_id
  ASoC: cs43130: fix spelling mistake: "irq_occurrance" -> "irq_occurrence"
  ALSA: atmel: Remove leftovers of AVR32 removal
  ALSA: atmel: convert AC97c driver to GPIO descriptor API
  ALSA: hda/realtek - Enable jack detection function for Intel ALC700
  ALSA: hda: Fix regression of hdmi eld control created based on invalid pcm
  ASoC: Intel: Skylake: Add IPC to configure the copier secondary pins
  ASoC: add missing compile rule for max98371
  ASoC: add missing compile rule for sirf-audio-codec
  ASoC: add missing compile rule for max98371
  ASoC: cs43130: Add devicetree bindings for CS43130
  ASoC: cs43130: Add support for CS43130 codec
  ASoC: make clock direction configurable in asoc-simple
  ALSA: ctxfi: Remove null check before kfree
  ASoC: max98927: Changed device property read function
  ASoC: max98927: Modified DAPM widget and map to enable/disable VI sense path
  ASoC: max98927: Added PM suspend and resume function
  ...

sound/aoa/codecs/onyx.c

@@ -167,7 +167,7 @@ static int onyx_snd_vol_put(struct snd_kcontrol *kcontrol,
 	return 1;
 }
 
-static struct snd_kcontrol_new volume_control = {
+static const struct snd_kcontrol_new volume_control = {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	.name = "Master Playback Volume",
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
@@ -229,7 +229,7 @@ static int onyx_snd_inputgain_put(struct snd_kcontrol *kcontrol,
 	return n != v;
 }
 
-static struct snd_kcontrol_new inputgain_control = {
+static const struct snd_kcontrol_new inputgain_control = {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	.name = "Master Capture Volume",
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
@@ -284,7 +284,7 @@ static int onyx_snd_capture_source_put(struct snd_kcontrol *kcontrol,
 	return 1;
 }
 
-static struct snd_kcontrol_new capture_source_control = {
+static const struct snd_kcontrol_new capture_source_control = {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	/* If we name this 'Input Source', it properly shows up in
 	 * alsamixer as a selection, * but it's shown under the
@@ -348,7 +348,7 @@ static int onyx_snd_mute_put(struct snd_kcontrol *kcontrol,
 	return !err ? (v != c) : err;
 }
 
-static struct snd_kcontrol_new mute_control = {
+static const struct snd_kcontrol_new mute_control = {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	.name = "Master Playback Switch",
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
@@ -476,7 +476,7 @@ static int onyx_spdif_mask_get(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
-static struct snd_kcontrol_new onyx_spdif_mask = {
+static const struct snd_kcontrol_new onyx_spdif_mask = {
 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
@@ -533,7 +533,7 @@ static int onyx_spdif_put(struct snd_kcontrol *kcontrol,
 	return 1;
 }
 
-static struct snd_kcontrol_new onyx_spdif_ctrl = {
+static const struct snd_kcontrol_new onyx_spdif_ctrl = {
 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE,
 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),

sound/aoa/codecs/tas.c

@@ -905,8 +905,8 @@ static int tas_i2c_probe(struct i2c_client *client,
 		goto fail;
 	}
 	printk(KERN_DEBUG
-	       "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n",
-	       (unsigned int)client->addr, node->full_name);
+	       "snd-aoa-codec-tas: tas found, addr 0x%02x on %pOF\n",
+	       (unsigned int)client->addr, node);
 	return 0;
  fail:
 	mutex_destroy(&tas->mtx);

sound/aoa/soundbus/i2sbus/pcm.c

@@ -778,7 +778,7 @@ static snd_pcm_uframes_t i2sbus_playback_pointer(struct snd_pcm_substream
 	return i2sbus_pcm_pointer(i2sdev, 0);
 }
 
-static struct snd_pcm_ops i2sbus_playback_ops = {
+static const struct snd_pcm_ops i2sbus_playback_ops = {
 	.open =		i2sbus_playback_open,
 	.close =	i2sbus_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -848,7 +848,7 @@ static snd_pcm_uframes_t i2sbus_record_pointer(struct snd_pcm_substream
 	return i2sbus_pcm_pointer(i2sdev, 1);
 }
 
-static struct snd_pcm_ops i2sbus_record_ops = {
+static const struct snd_pcm_ops i2sbus_record_ops = {
 	.open =		i2sbus_record_open,
 	.close =	i2sbus_record_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/arm/aaci.c

@@ -348,7 +348,7 @@ static irqreturn_t aaci_irq(int irq, void *devid)
 /*
  * ALSA support.
  */
-static struct snd_pcm_hardware aaci_hw_info = {
+static const struct snd_pcm_hardware aaci_hw_info = {
 	.info			= SNDRV_PCM_INFO_MMAP |
 				  SNDRV_PCM_INFO_MMAP_VALID |
 				  SNDRV_PCM_INFO_INTERLEAVED |
@@ -635,7 +635,7 @@ static int aaci_pcm_playback_trigger(struct snd_pcm_substream *substream, int cm
 	return ret;
 }
 
-static struct snd_pcm_ops aaci_playback_ops = {
+static const struct snd_pcm_ops aaci_playback_ops = {
 	.open		= aaci_pcm_open,
 	.close		= aaci_pcm_close,
 	.ioctl		= snd_pcm_lib_ioctl,
@@ -738,7 +738,7 @@ static int aaci_pcm_capture_prepare(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static struct snd_pcm_ops aaci_capture_ops = {
+static const struct snd_pcm_ops aaci_capture_ops = {
 	.open		= aaci_pcm_open,
 	.close		= aaci_pcm_close,
 	.ioctl		= snd_pcm_lib_ioctl,
@@ -786,7 +786,7 @@ static SIMPLE_DEV_PM_OPS(aaci_dev_pm_ops, aaci_suspend, aaci_resume);
 #endif
 
 
-static struct ac97_pcm ac97_defs[] = {
+static const struct ac97_pcm ac97_defs[] = {
 	[0] = {	/* Front PCM */
 		.exclusive = 1,
 		.r = {

sound/arm/pxa2xx-pcm.c

@@ -68,7 +68,7 @@ static int pxa2xx_pcm_close(struct snd_pcm_substream *substream)
 	return __pxa2xx_pcm_close(substream);
 }
 
-static struct snd_pcm_ops pxa2xx_pcm_ops = {
+static const struct snd_pcm_ops pxa2xx_pcm_ops = {
 	.open		= pxa2xx_pcm_open,
 	.close		= pxa2xx_pcm_close,
 	.ioctl		= snd_pcm_lib_ioctl,

sound/atmel/ac97c.c

@@ -12,16 +12,15 @@
 #include <linux/bitmap.h>
 #include <linux/device.h>
 #include <linux/atmel_pdc.h>
+#include <linux/gpio/consumer.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/mutex.h>
-#include <linux/gpio.h>
 #include <linux/types.h>
 #include <linux/io.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
 #include <linux/of_device.h>
 
 #include <sound/core.h>
@@ -29,7 +28,6 @@
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/ac97_codec.h>
-#include <sound/atmel-ac97c.h>
 #include <sound/memalloc.h>
 
 #include "ac97c.h"
@@ -56,7 +54,7 @@ struct atmel_ac97c {
 	void __iomem			*regs;
 	int				irq;
 	int				opened;
-	int				reset_pin;
+	struct gpio_desc		*reset_pin;
 };
 
 #define get_chip(card) ((struct atmel_ac97c *)(card)->private_data)
@@ -66,7 +64,7 @@ struct atmel_ac97c {
 #define ac97c_readl(chip, reg)				\
 	__raw_readl((chip)->regs + AC97C_##reg)
 
-static struct snd_pcm_hardware atmel_ac97c_hw = {
+static const struct snd_pcm_hardware atmel_ac97c_hw = {
 	.info			= (SNDRV_PCM_INFO_MMAP
 				  | SNDRV_PCM_INFO_MMAP_VALID
 				  | SNDRV_PCM_INFO_INTERLEAVED
@@ -461,7 +459,7 @@ atmel_ac97c_capture_pointer(struct snd_pcm_substream *substream)
 	return frames;
 }
 
-static struct snd_pcm_ops atmel_ac97_playback_ops = {
+static const struct snd_pcm_ops atmel_ac97_playback_ops = {
 	.open		= atmel_ac97c_playback_open,
 	.close		= atmel_ac97c_playback_close,
 	.ioctl		= snd_pcm_lib_ioctl,
@@ -472,7 +470,7 @@ static struct snd_pcm_ops atmel_ac97_playback_ops = {
 	.pointer	= atmel_ac97c_playback_pointer,
 };
 
-static struct snd_pcm_ops atmel_ac97_capture_ops = {
+static const struct snd_pcm_ops atmel_ac97_capture_ops = {
 	.open		= atmel_ac97c_capture_open,
 	.close		= atmel_ac97c_capture_close,
 	.ioctl		= snd_pcm_lib_ioctl,
@@ -558,7 +556,7 @@ static irqreturn_t atmel_ac97c_interrupt(int irq, void *dev)
 	return retval;
 }
 
-static struct ac97_pcm at91_ac97_pcm_defs[] = {
+static const struct ac97_pcm at91_ac97_pcm_defs[] = {
 	/* Playback */
 	{
 		.exclusive = 1,
@@ -700,11 +698,11 @@ static void atmel_ac97c_reset(struct atmel_ac97c *chip)
 	ac97c_writel(chip, CAMR, 0);
 	ac97c_writel(chip, COMR, 0);
 
-	if (gpio_is_valid(chip->reset_pin)) {
-		gpio_set_value(chip->reset_pin, 0);
+	if (!IS_ERR(chip->reset_pin)) {
+		gpiod_set_value(chip->reset_pin, 0);
 		/* AC97 v2.2 specifications says minimum 1 us. */
 		udelay(2);
-		gpio_set_value(chip->reset_pin, 1);
+		gpiod_set_value(chip->reset_pin, 1);
 	} else {
 		ac97c_writel(chip, MR, AC97C_MR_WRST | AC97C_MR_ENA);
 		udelay(2);
@@ -712,45 +710,18 @@ static void atmel_ac97c_reset(struct atmel_ac97c *chip)
 	}
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id atmel_ac97c_dt_ids[] = {
 	{ .compatible = "atmel,at91sam9263-ac97c", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, atmel_ac97c_dt_ids);
 
-static struct ac97c_platform_data *atmel_ac97c_probe_dt(struct device *dev)
-{
-	struct ac97c_platform_data *pdata;
-	struct device_node *node = dev->of_node;
-
-	if (!node) {
-		dev_err(dev, "Device does not have associated DT data\n");
-		return ERR_PTR(-EINVAL);
-	}
-
-	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata)
-		return ERR_PTR(-ENOMEM);
-
-	pdata->reset_pin = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
-
-	return pdata;
-}
-#else
-static struct ac97c_platform_data *atmel_ac97c_probe_dt(struct device *dev)
-{
-	dev_err(dev, "no platform data defined\n");
-	return ERR_PTR(-ENXIO);
-}
-#endif
-
 static int atmel_ac97c_probe(struct platform_device *pdev)
 {
+	struct device			*dev = &pdev->dev;
 	struct snd_card			*card;
 	struct atmel_ac97c		*chip;
 	struct resource			*regs;
-	struct ac97c_platform_data	*pdata;
 	struct clk			*pclk;
 	static struct snd_ac97_bus_ops	ops = {
 		.write	= atmel_ac97c_write,
@@ -765,13 +736,6 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
-	pdata = dev_get_platdata(&pdev->dev);
-	if (!pdata) {
-		pdata = atmel_ac97c_probe_dt(&pdev->dev);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
-	}
-
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		dev_dbg(&pdev->dev, "could not get irq: %d\n", irq);
@@ -783,7 +747,9 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
 		dev_dbg(&pdev->dev, "no peripheral clock\n");
 		return PTR_ERR(pclk);
 	}
-	clk_prepare_enable(pclk);
+	retval = clk_prepare_enable(pclk);
+	if (retval)
+		goto err_prepare_enable;
 
 	retval = snd_card_new(&pdev->dev, SNDRV_DEFAULT_IDX1,
 			      SNDRV_DEFAULT_STR1, THIS_MODULE,
@@ -819,17 +785,9 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
 		goto err_ioremap;
 	}
 
-	if (gpio_is_valid(pdata->reset_pin)) {
-		if (gpio_request(pdata->reset_pin, "reset_pin")) {
-			dev_dbg(&pdev->dev, "reset pin not available\n");
-			chip->reset_pin = -ENODEV;
-		} else {
-			gpio_direction_output(pdata->reset_pin, 1);
-			chip->reset_pin = pdata->reset_pin;
-		}
-	} else {
-		chip->reset_pin = -EINVAL;
-	}
+	chip->reset_pin = devm_gpiod_get_index(dev, "ac97", 2, GPIOD_OUT_HIGH);
+	if (IS_ERR(chip->reset_pin))
+		dev_dbg(dev, "reset pin not available\n");
 
 	atmel_ac97c_reset(chip);
 
@@ -869,9 +827,6 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
 	return 0;
 
 err_ac97_bus:
-	if (gpio_is_valid(chip->reset_pin))
-		gpio_free(chip->reset_pin);
-
 	iounmap(chip->regs);
 err_ioremap:
 	free_irq(irq, chip);
@@ -879,6 +834,7 @@ err_request_irq:
 	snd_card_free(card);
 err_snd_card_new:
 	clk_disable_unprepare(pclk);
+err_prepare_enable:
 	clk_put(pclk);
 	return retval;
 }
@@ -897,9 +853,9 @@ static int atmel_ac97c_resume(struct device *pdev)
 {
 	struct snd_card *card = dev_get_drvdata(pdev);
 	struct atmel_ac97c *chip = card->private_data;
+	int ret = clk_prepare_enable(chip->pclk);
 
-	clk_prepare_enable(chip->pclk);
-	return 0;
+	return ret;
 }
 
 static SIMPLE_DEV_PM_OPS(atmel_ac97c_pm, atmel_ac97c_suspend, atmel_ac97c_resume);
@@ -913,9 +869,6 @@ static int atmel_ac97c_remove(struct platform_device *pdev)
 	struct snd_card *card = platform_get_drvdata(pdev);
 	struct atmel_ac97c *chip = get_chip(card);
 
-	if (gpio_is_valid(chip->reset_pin))
-		gpio_free(chip->reset_pin);
-
 	ac97c_writel(chip, CAMR, 0);
 	ac97c_writel(chip, COMR, 0);
 	ac97c_writel(chip, MR,   0);
@@ -936,7 +889,7 @@ static struct platform_driver atmel_ac97c_driver = {
 	.driver		= {
 		.name	= "atmel_ac97c",
 		.pm	= ATMEL_AC97C_PM_OPS,
-		.of_match_table = of_match_ptr(atmel_ac97c_dt_ids),
+		.of_match_table = atmel_ac97c_dt_ids,
 	},
 };
 module_platform_driver(atmel_ac97c_driver);

sound/core/control.c

@@ -864,14 +864,14 @@ static int snd_ctl_elem_info_user(struct snd_ctl_file *ctl,
 
 	if (copy_from_user(&info, _info, sizeof(info)))
 		return -EFAULT;
-	snd_power_lock(ctl->card);
 	result = snd_power_wait(ctl->card, SNDRV_CTL_POWER_D0);
-	if (result >= 0)
-		result = snd_ctl_elem_info(ctl, &info);
-	snd_power_unlock(ctl->card);
-	if (result >= 0)
-		if (copy_to_user(_info, &info, sizeof(info)))
-			return -EFAULT;
+	if (result < 0)
+		return result;
+	result = snd_ctl_elem_info(ctl, &info);
+	if (result < 0)
+		return result;
+	if (copy_to_user(_info, &info, sizeof(info)))
+		return -EFAULT;
 	return result;
 }
 
@@ -881,24 +881,18 @@ static int snd_ctl_elem_read(struct snd_card *card,
 	struct snd_kcontrol *kctl;
 	struct snd_kcontrol_volatile *vd;
 	unsigned int index_offset;
-	int result;
 
-	down_read(&card->controls_rwsem);
 	kctl = snd_ctl_find_id(card, &control->id);
-	if (kctl == NULL) {
-		result = -ENOENT;
-	} else {
-		index_offset = snd_ctl_get_ioff(kctl, &control->id);
-		vd = &kctl->vd[index_offset];
-		if ((vd->access & SNDRV_CTL_ELEM_ACCESS_READ) &&
-		    kctl->get != NULL) {
-			snd_ctl_build_ioff(&control->id, kctl, index_offset);
-			result = kctl->get(kctl, control);
-		} else
-			result = -EPERM;
-	}
-	up_read(&card->controls_rwsem);
-	return result;
+	if (kctl == NULL)
+		return -ENOENT;
+
+	index_offset = snd_ctl_get_ioff(kctl, &control->id);
+	vd = &kctl->vd[index_offset];
+	if (!(vd->access & SNDRV_CTL_ELEM_ACCESS_READ) && kctl->get == NULL)
+		return -EPERM;
+
+	snd_ctl_build_ioff(&control->id, kctl, index_offset);
+	return kctl->get(kctl, control);
 }
 
 static int snd_ctl_elem_read_user(struct snd_card *card,
@@ -911,14 +905,19 @@ static int snd_ctl_elem_read_user(struct snd_card *card,
 	if (IS_ERR(control))
 		return PTR_ERR(control);
 
-	snd_power_lock(card);
 	result = snd_power_wait(card, SNDRV_CTL_POWER_D0);
-	if (result >= 0)
-		result = snd_ctl_elem_read(card, control);
-	snd_power_unlock(card);
-	if (result >= 0)
-		if (copy_to_user(_control, control, sizeof(*control)))
-			result = -EFAULT;
+	if (result < 0)
+		goto error;
+
+	down_read(&card->controls_rwsem);
+	result = snd_ctl_elem_read(card, control);
+	up_read(&card->controls_rwsem);
+	if (result < 0)
+		goto error;
+
+	if (copy_to_user(_control, control, sizeof(*control)))
+		result = -EFAULT;
+ error:
 	kfree(control);
 	return result;
 }
@@ -931,30 +930,28 @@ static int snd_ctl_elem_write(struct snd_card *card, struct snd_ctl_file *file,
 	unsigned int index_offset;
 	int result;
 
-	down_read(&card->controls_rwsem);
 	kctl = snd_ctl_find_id(card, &control->id);
-	if (kctl == NULL) {
-		result = -ENOENT;
-	} else {
-		index_offset = snd_ctl_get_ioff(kctl, &control->id);
-		vd = &kctl->vd[index_offset];
-		if (!(vd->access & SNDRV_CTL_ELEM_ACCESS_WRITE) ||
-		    kctl->put == NULL ||
-		    (file && vd->owner && vd->owner != file)) {
-			result = -EPERM;
-		} else {
-			snd_ctl_build_ioff(&control->id, kctl, index_offset);
-			result = kctl->put(kctl, control);
-		}
-		if (result > 0) {
-			struct snd_ctl_elem_id id = control->id;
-			up_read(&card->controls_rwsem);
-			snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &id);
-			return 0;
-		}
+	if (kctl == NULL)
+		return -ENOENT;
+
+	index_offset = snd_ctl_get_ioff(kctl, &control->id);
+	vd = &kctl->vd[index_offset];
+	if (!(vd->access & SNDRV_CTL_ELEM_ACCESS_WRITE) || kctl->put == NULL ||
+	    (file && vd->owner && vd->owner != file)) {
+		return -EPERM;
 	}
-	up_read(&card->controls_rwsem);
-	return result;
+
+	snd_ctl_build_ioff(&control->id, kctl, index_offset);
+	result = kctl->put(kctl, control);
+	if (result < 0)
+		return result;
+
+	if (result > 0) {
+		struct snd_ctl_elem_id id = control->id;
+		snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &id);
+	}
+
+	return 0;
 }
 
 static int snd_ctl_elem_write_user(struct snd_ctl_file *file,
@@ -969,14 +966,19 @@ static int snd_ctl_elem_write_user(struct snd_ctl_file *file,
 		return PTR_ERR(control);
 
 	card = file->card;
-	snd_power_lock(card);
 	result = snd_power_wait(card, SNDRV_CTL_POWER_D0);
-	if (result >= 0)
-		result = snd_ctl_elem_write(card, file, control);
-	snd_power_unlock(card);
-	if (result >= 0)
-		if (copy_to_user(_control, control, sizeof(*control)))
-			result = -EFAULT;
+	if (result < 0)
+		goto error;
+
+	down_write(&card->controls_rwsem);
+	result = snd_ctl_elem_write(card, file, control);
+	up_write(&card->controls_rwsem);
+	if (result < 0)
+		goto error;
+
+	if (copy_to_user(_control, control, sizeof(*control)))
+		result = -EFAULT;
+ error:
 	kfree(control);
 	return result;
 }
@@ -1095,9 +1097,7 @@ static int snd_ctl_elem_user_get(struct snd_kcontrol *kcontrol,
 	char *src = ue->elem_data +
 			snd_ctl_get_ioff(kcontrol, &ucontrol->id) * size;
 
-	mutex_lock(&ue->card->user_ctl_lock);
 	memcpy(&ucontrol->value, src, size);
-	mutex_unlock(&ue->card->user_ctl_lock);
 	return 0;
 }
 
@@ -1110,60 +1110,83 @@ static int snd_ctl_elem_user_put(struct snd_kcontrol *kcontrol,
 	char *dst = ue->elem_data +
 			snd_ctl_get_ioff(kcontrol, &ucontrol->id) * size;
 
-	mutex_lock(&ue->card->user_ctl_lock);
 	change = memcmp(&ucontrol->value, dst, size) != 0;
 	if (change)
 		memcpy(dst, &ucontrol->value, size);
-	mutex_unlock(&ue->card->user_ctl_lock);
 	return change;
 }
 
-static int snd_ctl_elem_user_tlv(struct snd_kcontrol *kcontrol,
-				 int op_flag,
-				 unsigned int size,
-				 unsigned int __user *tlv)
+static int replace_user_tlv(struct snd_kcontrol *kctl, unsigned int __user *buf,
+			    unsigned int size)
 {
-	struct user_element *ue = kcontrol->private_data;
-	int change = 0;
-	void *new_data;
+	struct user_element *ue = kctl->private_data;
+	unsigned int *container;
+	struct snd_ctl_elem_id id;
+	unsigned int mask = 0;
+	int i;
+	int change;
 
-	if (op_flag == SNDRV_CTL_TLV_OP_WRITE) {
-		if (size > 1024 * 128)	/* sane value */
-			return -EINVAL;
+	if (size > 1024 * 128)	/* sane value */
+		return -EINVAL;
 
-		new_data = memdup_user(tlv, size);
-		if (IS_ERR(new_data))
-			return PTR_ERR(new_data);
-		mutex_lock(&ue->card->user_ctl_lock);
-		change = ue->tlv_data_size != size;
-		if (!change)
-			change = memcmp(ue->tlv_data, new_data, size) != 0;
-		kfree(ue->tlv_data);
-		ue->tlv_data = new_data;
-		ue->tlv_data_size = size;
-		mutex_unlock(&ue->card->user_ctl_lock);
-	} else {
-		int ret = 0;
+	container = memdup_user(buf, size);
+	if (IS_ERR(container))
+		return PTR_ERR(container);
 
-		mutex_lock(&ue->card->user_ctl_lock);
-		if (!ue->tlv_data_size || !ue->tlv_data) {
-			ret = -ENXIO;
-			goto err_unlock;
-		}
-		if (size < ue->tlv_data_size) {
-			ret = -ENOSPC;
-			goto err_unlock;
-		}
-		if (copy_to_user(tlv, ue->tlv_data, ue->tlv_data_size))
-			ret = -EFAULT;
-err_unlock:
-		mutex_unlock(&ue->card->user_ctl_lock);
-		if (ret)
-			return ret;
+	change = ue->tlv_data_size != size;
+	if (!change)
+		change = memcmp(ue->tlv_data, container, size) != 0;
+	if (!change) {
+		kfree(container);
+		return 0;
 	}
+
+	if (ue->tlv_data == NULL) {
+		/* Now TLV data is available. */
+		for (i = 0; i < kctl->count; ++i)
+			kctl->vd[i].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
+		mask = SNDRV_CTL_EVENT_MASK_INFO;
+	}
+
+	kfree(ue->tlv_data);
+	ue->tlv_data = container;
+	ue->tlv_data_size = size;
+
+	mask |= SNDRV_CTL_EVENT_MASK_TLV;
+	for (i = 0; i < kctl->count; ++i) {
+		snd_ctl_build_ioff(&id, kctl, i);
+		snd_ctl_notify(ue->card, mask, &id);
+	}
+
 	return change;
 }
 
+static int read_user_tlv(struct snd_kcontrol *kctl, unsigned int __user *buf,
+			 unsigned int size)
+{
+	struct user_element *ue = kctl->private_data;
+
+	if (ue->tlv_data_size == 0 || ue->tlv_data == NULL)
+		return -ENXIO;
+
+	if (size < ue->tlv_data_size)
+		return -ENOSPC;
+
+	if (copy_to_user(buf, ue->tlv_data, ue->tlv_data_size))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int snd_ctl_elem_user_tlv(struct snd_kcontrol *kctl, int op_flag,
+				 unsigned int size, unsigned int __user *buf)
+{
+	if (op_flag == SNDRV_CTL_TLV_OP_WRITE)
+		return replace_user_tlv(kctl, buf, size);
+	else
+		return read_user_tlv(kctl, buf, size);
+}
+
 static int snd_ctl_elem_init_enum_names(struct user_element *ue)
 {
 	char *names, *p;
@@ -1267,8 +1290,10 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
 		access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
 	access &= (SNDRV_CTL_ELEM_ACCESS_READWRITE |
 		   SNDRV_CTL_ELEM_ACCESS_INACTIVE |
-		   SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE);
-	if (access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE)
+		   SNDRV_CTL_ELEM_ACCESS_TLV_WRITE);
+
+	/* In initial state, nothing is available as TLV container. */
+	if (access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
 		access |= SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
 	access |= SNDRV_CTL_ELEM_ACCESS_USER;
 
@@ -1331,7 +1356,7 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
 		kctl->get = snd_ctl_elem_user_get;
 	if (access & SNDRV_CTL_ELEM_ACCESS_WRITE)
 		kctl->put = snd_ctl_elem_user_put;
-	if (access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE)
+	if (access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
 		kctl->tlv.c = snd_ctl_elem_user_tlv;
 
 	/* This function manage to free the instance on failure. */
@@ -1405,71 +1430,107 @@ static int snd_ctl_subscribe_events(struct snd_ctl_file *file, int __user *ptr)
 	return 0;
 }
 
+static int call_tlv_handler(struct snd_ctl_file *file, int op_flag,
+			    struct snd_kcontrol *kctl,
+			    struct snd_ctl_elem_id *id,
+			    unsigned int __user *buf, unsigned int size)
+{
+	static const struct {
+		int op;
+		int perm;
+	} pairs[] = {
+		{SNDRV_CTL_TLV_OP_READ,  SNDRV_CTL_ELEM_ACCESS_TLV_READ},
+		{SNDRV_CTL_TLV_OP_WRITE, SNDRV_CTL_ELEM_ACCESS_TLV_WRITE},
+		{SNDRV_CTL_TLV_OP_CMD,   SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND},
+	};
+	struct snd_kcontrol_volatile *vd = &kctl->vd[snd_ctl_get_ioff(kctl, id)];
+	int i;
+
+	/* Check support of the request for this element. */
+	for (i = 0; i < ARRAY_SIZE(pairs); ++i) {
+		if (op_flag == pairs[i].op && (vd->access & pairs[i].perm))
+			break;
+	}
+	if (i == ARRAY_SIZE(pairs))
+		return -ENXIO;
+
+	if (kctl->tlv.c == NULL)
+		return -ENXIO;
+
+	/* When locked, this is unavailable. */
+	if (vd->owner != NULL && vd->owner != file)
+		return -EPERM;
+
+	return kctl->tlv.c(kctl, op_flag, size, buf);
+}
+
+static int read_tlv_buf(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id,
+			unsigned int __user *buf, unsigned int size)
+{
+	struct snd_kcontrol_volatile *vd = &kctl->vd[snd_ctl_get_ioff(kctl, id)];
+	unsigned int len;
+
+	if (!(vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_READ))
+		return -ENXIO;
+
+	if (kctl->tlv.p == NULL)
+		return -ENXIO;
+
+	len = sizeof(unsigned int) * 2 + kctl->tlv.p[1];
+	if (size < len)
+		return -ENOMEM;
+
+	if (copy_to_user(buf, kctl->tlv.p, len))
+		return -EFAULT;
+
+	return 0;
+}
+
 static int snd_ctl_tlv_ioctl(struct snd_ctl_file *file,
-                             struct snd_ctl_tlv __user *_tlv,
+			     struct snd_ctl_tlv __user *buf,
                              int op_flag)
 {
-	struct snd_card *card = file->card;
-	struct snd_ctl_tlv tlv;
+	struct snd_ctl_tlv header;
+	unsigned int *container;
+	unsigned int container_size;
 	struct snd_kcontrol *kctl;
+	struct snd_ctl_elem_id id;
 	struct snd_kcontrol_volatile *vd;
-	unsigned int len;
-	int err = 0;
 
-	if (copy_from_user(&tlv, _tlv, sizeof(tlv)))
+	if (copy_from_user(&header, buf, sizeof(header)))
 		return -EFAULT;
-	if (tlv.length < sizeof(unsigned int) * 2)
+
+	/* In design of control core, numerical ID starts at 1. */
+	if (header.numid == 0)
 		return -EINVAL;
-	if (!tlv.numid)
+
+	/* At least, container should include type and length fields.  */
+	if (header.length < sizeof(unsigned int) * 2)
 		return -EINVAL;
-	down_read(&card->controls_rwsem);
-	kctl = snd_ctl_find_numid(card, tlv.numid);
-	if (kctl == NULL) {
-		err = -ENOENT;
-		goto __kctl_end;
-	}
-	if (kctl->tlv.p == NULL) {
-		err = -ENXIO;
-		goto __kctl_end;
-	}
-	vd = &kctl->vd[tlv.numid - kctl->id.numid];
-	if ((op_flag == SNDRV_CTL_TLV_OP_READ &&
-	     (vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_READ) == 0) ||
-	    (op_flag == SNDRV_CTL_TLV_OP_WRITE &&
-	     (vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) == 0) ||
-	    (op_flag == SNDRV_CTL_TLV_OP_CMD &&
-	     (vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND) == 0)) {
-	    	err = -ENXIO;
-	    	goto __kctl_end;
-	}
+	container_size = header.length;
+	container = buf->tlv;
+
+	kctl = snd_ctl_find_numid(file->card, header.numid);
+	if (kctl == NULL)
+		return -ENOENT;
+
+	/* Calculate index of the element in this set. */
+	id = kctl->id;
+	snd_ctl_build_ioff(&id, kctl, header.numid - id.numid);
+	vd = &kctl->vd[snd_ctl_get_ioff(kctl, &id)];
+
 	if (vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
-		if (vd->owner != NULL && vd->owner != file) {
-			err = -EPERM;
-			goto __kctl_end;
-		}
-		err = kctl->tlv.c(kctl, op_flag, tlv.length, _tlv->tlv);
-		if (err > 0) {
-			struct snd_ctl_elem_id id = kctl->id;
-			up_read(&card->controls_rwsem);
-			snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_TLV, &id);
-			return 0;
-		}
+		return call_tlv_handler(file, op_flag, kctl, &id, container,
+					container_size);
 	} else {
-		if (op_flag != SNDRV_CTL_TLV_OP_READ) {
-			err = -ENXIO;
-			goto __kctl_end;
+		if (op_flag == SNDRV_CTL_TLV_OP_READ) {
+			return read_tlv_buf(kctl, &id, container,
+					    container_size);
 		}
-		len = kctl->tlv.p[1] + 2 * sizeof(unsigned int);
-		if (tlv.length < len) {
-			err = -ENOMEM;
-			goto __kctl_end;
-		}
-		if (copy_to_user(_tlv->tlv, kctl->tlv.p, len))
-			err = -EFAULT;
 	}
-      __kctl_end:
-	up_read(&card->controls_rwsem);
-	return err;
+
+	/* Not supported. */
+	return -ENXIO;
 }
 
 static long snd_ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
@@ -1511,11 +1572,20 @@ static long snd_ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg
 	case SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS:
 		return snd_ctl_subscribe_events(ctl, ip);
 	case SNDRV_CTL_IOCTL_TLV_READ:
-		return snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_READ);
+		down_read(&ctl->card->controls_rwsem);
+		err = snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_READ);
+		up_read(&ctl->card->controls_rwsem);
+		return err;
 	case SNDRV_CTL_IOCTL_TLV_WRITE:
-		return snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_WRITE);
+		down_write(&ctl->card->controls_rwsem);
+		err = snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_WRITE);
+		up_write(&ctl->card->controls_rwsem);
+		return err;
 	case SNDRV_CTL_IOCTL_TLV_COMMAND:
-		return snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_CMD);
+		down_write(&ctl->card->controls_rwsem);
+		err = snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_CMD);
+		up_write(&ctl->card->controls_rwsem);
+		return err;
 	case SNDRV_CTL_IOCTL_POWER:
 		return -ENOPROTOOPT;
 	case SNDRV_CTL_IOCTL_POWER_STATE:

sound/core/control_compat.c

@@ -111,12 +111,10 @@ static int snd_ctl_elem_info_compat(struct snd_ctl_file *ctl,
 	if (get_user(data->value.enumerated.item, &data32->value.enumerated.item))
 		goto error;
 
-	snd_power_lock(ctl->card);
 	err = snd_power_wait(ctl->card, SNDRV_CTL_POWER_D0);
-	if (err >= 0)
-		err = snd_ctl_elem_info(ctl, data);
-	snd_power_unlock(ctl->card);
-
+	if (err < 0)
+		goto error;
+	err = snd_ctl_elem_info(ctl, data);
 	if (err < 0)
 		goto error;
 	/* restore info to 32bit */
@@ -315,14 +313,13 @@ static int ctl_elem_read_user(struct snd_card *card,
 	if (err < 0)
 		goto error;
 
-	snd_power_lock(card);
 	err = snd_power_wait(card, SNDRV_CTL_POWER_D0);
-	if (err >= 0)
-		err = snd_ctl_elem_read(card, data);
-	snd_power_unlock(card);
-	if (err >= 0)
-		err = copy_ctl_value_to_user(userdata, valuep, data,
-					     type, count);
+	if (err < 0)
+		goto error;
+	err = snd_ctl_elem_read(card, data);
+	if (err < 0)
+		goto error;
+	err = copy_ctl_value_to_user(userdata, valuep, data, type, count);
  error:
 	kfree(data);
 	return err;
@@ -344,14 +341,13 @@ static int ctl_elem_write_user(struct snd_ctl_file *file,
 	if (err < 0)
 		goto error;
 
-	snd_power_lock(card);
 	err = snd_power_wait(card, SNDRV_CTL_POWER_D0);
-	if (err >= 0)
-		err = snd_ctl_elem_write(card, file, data);
-	snd_power_unlock(card);
-	if (err >= 0)
-		err = copy_ctl_value_to_user(userdata, valuep, data,
-					     type, count);
+	if (err < 0)
+		goto error;
+	err = snd_ctl_elem_write(card, file, data);
+	if (err < 0)
+		goto error;
+	err = copy_ctl_value_to_user(userdata, valuep, data, type, count);
  error:
 	kfree(data);
 	return err;

sound/core/init.c

@@ -248,13 +248,11 @@ int snd_card_new(struct device *parent, int idx, const char *xid,
 	INIT_LIST_HEAD(&card->devices);
 	init_rwsem(&card->controls_rwsem);
 	rwlock_init(&card->ctl_files_rwlock);
-	mutex_init(&card->user_ctl_lock);
 	INIT_LIST_HEAD(&card->controls);
 	INIT_LIST_HEAD(&card->ctl_files);
 	spin_lock_init(&card->files_lock);
 	INIT_LIST_HEAD(&card->files_list);
 #ifdef CONFIG_PM
-	mutex_init(&card->power_lock);
 	init_waitqueue_head(&card->power_sleep);
 #endif
 
@@ -979,8 +977,6 @@ EXPORT_SYMBOL(snd_card_file_remove);
  *  Waits until the power-state is changed.
  *
  *  Return: Zero if successful, or a negative error code.
- *
- *  Note: the power lock must be active before call.
  */
 int snd_power_wait(struct snd_card *card, unsigned int power_state)
 {
@@ -1000,9 +996,7 @@ int snd_power_wait(struct snd_card *card, unsigned int power_state)
 		if (snd_power_get_state(card) == power_state)
 			break;
 		set_current_state(TASK_UNINTERRUPTIBLE);
-		snd_power_unlock(card);
 		schedule_timeout(30 * HZ);
-		snd_power_lock(card);
 	}
 	remove_wait_queue(&card->power_sleep, &wait);
 	return result;

sound/core/pcm.c

@@ -523,7 +523,9 @@ static int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr)
 
 	sprintf(name, "pcm%i%c", pcm->device, 
 		pstr->stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c');
-	if ((entry = snd_info_create_card_entry(pcm->card, name, pcm->card->proc_root)) == NULL)
+	entry = snd_info_create_card_entry(pcm->card, name,
+					   pcm->card->proc_root);
+	if (!entry)
 		return -ENOMEM;
 	entry->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 	if (snd_info_register(entry) < 0) {
@@ -531,8 +533,8 @@ static int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr)
 		return -ENOMEM;
 	}
 	pstr->proc_root = entry;
-
-	if ((entry = snd_info_create_card_entry(pcm->card, "info", pstr->proc_root)) != NULL) {
+	entry = snd_info_create_card_entry(pcm->card, "info", pstr->proc_root);
+	if (entry) {
 		snd_info_set_text_ops(entry, pstr, snd_pcm_stream_proc_info_read);
 		if (snd_info_register(entry) < 0) {
 			snd_info_free_entry(entry);
@@ -542,8 +544,9 @@ static int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr)
 	pstr->proc_info_entry = entry;
 
 #ifdef CONFIG_SND_PCM_XRUN_DEBUG
-	if ((entry = snd_info_create_card_entry(pcm->card, "xrun_debug",
-						pstr->proc_root)) != NULL) {
+	entry = snd_info_create_card_entry(pcm->card, "xrun_debug",
+					   pstr->proc_root);
+	if (entry) {
 		entry->c.text.read = snd_pcm_xrun_debug_read;
 		entry->c.text.write = snd_pcm_xrun_debug_write;
 		entry->mode |= S_IWUSR;
@@ -580,7 +583,9 @@ static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream)
 	card = substream->pcm->card;
 
 	sprintf(name, "sub%i", substream->number);
-	if ((entry = snd_info_create_card_entry(card, name, substream->pstr->proc_root)) == NULL)
+	entry = snd_info_create_card_entry(card, name,
+					   substream->pstr->proc_root);
+	if (!entry)
 		return -ENOMEM;
 	entry->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 	if (snd_info_register(entry) < 0) {
@@ -588,8 +593,8 @@ static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream)
 		return -ENOMEM;
 	}
 	substream->proc_root = entry;
-
-	if ((entry = snd_info_create_card_entry(card, "info", substream->proc_root)) != NULL) {
+	entry = snd_info_create_card_entry(card, "info", substream->proc_root);
+	if (entry) {
 		snd_info_set_text_ops(entry, substream,
 				      snd_pcm_substream_proc_info_read);
 		if (snd_info_register(entry) < 0) {
@@ -598,8 +603,9 @@ static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream)
 		}
 	}
 	substream->proc_info_entry = entry;
-
-	if ((entry = snd_info_create_card_entry(card, "hw_params", substream->proc_root)) != NULL) {
+	entry = snd_info_create_card_entry(card, "hw_params",
+					   substream->proc_root);
+	if (entry) {
 		snd_info_set_text_ops(entry, substream,
 				      snd_pcm_substream_proc_hw_params_read);
 		if (snd_info_register(entry) < 0) {
@@ -608,8 +614,9 @@ static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream)
 		}
 	}
 	substream->proc_hw_params_entry = entry;
-
-	if ((entry = snd_info_create_card_entry(card, "sw_params", substream->proc_root)) != NULL) {
+	entry = snd_info_create_card_entry(card, "sw_params",
+					   substream->proc_root);
+	if (entry) {
 		snd_info_set_text_ops(entry, substream,
 				      snd_pcm_substream_proc_sw_params_read);
 		if (snd_info_register(entry) < 0) {
@@ -618,8 +625,9 @@ static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream)
 		}
 	}
 	substream->proc_sw_params_entry = entry;
-
-	if ((entry = snd_info_create_card_entry(card, "status", substream->proc_root)) != NULL) {
+	entry = snd_info_create_card_entry(card, "status",
+					   substream->proc_root);
+	if (entry) {
 		snd_info_set_text_ops(entry, substream,
 				      snd_pcm_substream_proc_status_read);
 		if (snd_info_register(entry) < 0) {
@@ -783,21 +791,27 @@ static int _snd_pcm_new(struct snd_card *card, const char *id, int device,
 	INIT_LIST_HEAD(&pcm->list);
 	if (id)
 		strlcpy(pcm->id, id, sizeof(pcm->id));
-	if ((err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_PLAYBACK, playback_count)) < 0) {
-		snd_pcm_free(pcm);
-		return err;
-	}
-	if ((err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_CAPTURE, capture_count)) < 0) {
-		snd_pcm_free(pcm);
-		return err;
-	}
-	if ((err = snd_device_new(card, SNDRV_DEV_PCM, pcm, &ops)) < 0) {
-		snd_pcm_free(pcm);
-		return err;
-	}
+
+	err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+				 playback_count);
+	if (err < 0)
+		goto free_pcm;
+
+	err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_CAPTURE, capture_count);
+	if (err < 0)
+		goto free_pcm;
+
+	err = snd_device_new(card, SNDRV_DEV_PCM, pcm, &ops);
+	if (err < 0)
+		goto free_pcm;
+
 	if (rpcm)
 		*rpcm = pcm;
 	return 0;
+
+free_pcm:
+	snd_pcm_free(pcm);
+	return err;
 }
 
 /**
@@ -1224,7 +1238,8 @@ static void snd_pcm_proc_init(void)
 {
 	struct snd_info_entry *entry;
 
-	if ((entry = snd_info_create_module_entry(THIS_MODULE, "pcm", NULL)) != NULL) {
+	entry = snd_info_create_module_entry(THIS_MODULE, "pcm", NULL);
+	if (entry) {
 		snd_info_set_text_ops(entry, NULL, snd_pcm_proc_read);
 		if (snd_info_register(entry) < 0) {
 			snd_info_free_entry(entry);

sound/core/pcm_compat.c

@@ -689,10 +689,7 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
 	case SNDRV_PCM_IOCTL_XRUN:
 	case SNDRV_PCM_IOCTL_LINK:
 	case SNDRV_PCM_IOCTL_UNLINK:
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-			return snd_pcm_playback_ioctl1(file, substream, cmd, argp);
-		else
-			return snd_pcm_capture_ioctl1(file, substream, cmd, argp);
+		return snd_pcm_common_ioctl(file, substream, cmd, argp);
 	case SNDRV_PCM_IOCTL_HW_REFINE32:
 		return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
 	case SNDRV_PCM_IOCTL_HW_PARAMS32:

sound/core/pcm_native.c

@@ -1830,7 +1830,6 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
 		add_wait_queue(&to_check->sleep, &wait);
 		snd_pcm_stream_unlock_irq(substream);
 		up_read(&snd_pcm_link_rwsem);
-		snd_power_unlock(card);
 		if (runtime->no_period_wakeup)
 			tout = MAX_SCHEDULE_TIMEOUT;
 		else {
@@ -1842,7 +1841,6 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
 			tout = msecs_to_jiffies(tout * 1000);
 		}
 		tout = schedule_timeout_interruptible(tout);
-		snd_power_lock(card);
 		down_read(&snd_pcm_link_rwsem);
 		snd_pcm_stream_lock_irq(substream);
 		remove_wait_queue(&to_check->sleep, &wait);
@@ -2763,12 +2761,106 @@ static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg)
 	runtime->tstamp_type = arg;
 	return 0;
 }
-		
+
+static int snd_pcm_xferi_frames_ioctl(struct snd_pcm_substream *substream,
+				      struct snd_xferi __user *_xferi)
+{
+	struct snd_xferi xferi;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	snd_pcm_sframes_t result;
+
+	if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+		return -EBADFD;
+	if (put_user(0, &_xferi->result))
+		return -EFAULT;
+	if (copy_from_user(&xferi, _xferi, sizeof(xferi)))
+		return -EFAULT;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames);
+	else
+		result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames);
+	__put_user(result, &_xferi->result);
+	return result < 0 ? result : 0;
+}
+
+static int snd_pcm_xfern_frames_ioctl(struct snd_pcm_substream *substream,
+				      struct snd_xfern __user *_xfern)
+{
+	struct snd_xfern xfern;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	void *bufs;
+	snd_pcm_sframes_t result;
+
+	if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+		return -EBADFD;
+	if (runtime->channels > 128)
+		return -EINVAL;
+	if (put_user(0, &_xfern->result))
+		return -EFAULT;
+	if (copy_from_user(&xfern, _xfern, sizeof(xfern)))
+		return -EFAULT;
+
+	bufs = memdup_user(xfern.bufs, sizeof(void *) * runtime->channels);
+	if (IS_ERR(bufs))
+		return PTR_ERR(bufs);
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		result = snd_pcm_lib_writev(substream, bufs, xfern.frames);
+	else
+		result = snd_pcm_lib_readv(substream, bufs, xfern.frames);
+	kfree(bufs);
+	__put_user(result, &_xfern->result);
+	return result < 0 ? result : 0;
+}
+
+static int snd_pcm_rewind_ioctl(struct snd_pcm_substream *substream,
+				snd_pcm_uframes_t __user *_frames)
+{
+	snd_pcm_uframes_t frames;
+	snd_pcm_sframes_t result;
+
+	if (get_user(frames, _frames))
+		return -EFAULT;
+	if (put_user(0, _frames))
+		return -EFAULT;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		result = snd_pcm_playback_rewind(substream, frames);
+	else
+		result = snd_pcm_capture_rewind(substream, frames);
+	__put_user(result, _frames);
+	return result < 0 ? result : 0;
+}
+
+static int snd_pcm_forward_ioctl(struct snd_pcm_substream *substream,
+				 snd_pcm_uframes_t __user *_frames)
+{
+	snd_pcm_uframes_t frames;
+	snd_pcm_sframes_t result;
+
+	if (get_user(frames, _frames))
+		return -EFAULT;
+	if (put_user(0, _frames))
+		return -EFAULT;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		result = snd_pcm_playback_forward(substream, frames);
+	else
+		result = snd_pcm_capture_forward(substream, frames);
+	__put_user(result, _frames);
+	return result < 0 ? result : 0;
+}
+
 static int snd_pcm_common_ioctl(struct file *file,
 				 struct snd_pcm_substream *substream,
 				 unsigned int cmd, void __user *arg)
 {
 	struct snd_pcm_file *pcm_file = file->private_data;
+	int res;
+
+	if (PCM_RUNTIME_CHECK(substream))
+		return -ENXIO;
+
+	res = snd_power_wait(substream->pcm->card, SNDRV_CTL_POWER_D0);
+	if (res < 0)
+		return res;
 
 	switch (cmd) {
 	case SNDRV_PCM_IOCTL_PVERSION:
@@ -2841,188 +2933,23 @@ static int snd_pcm_common_ioctl(struct file *file,
 		return snd_pcm_action_lock_irq(&snd_pcm_action_pause,
 					       substream,
 					       (int)(unsigned long)arg);
+	case SNDRV_PCM_IOCTL_WRITEI_FRAMES:
+	case SNDRV_PCM_IOCTL_READI_FRAMES:
+		return snd_pcm_xferi_frames_ioctl(substream, arg);
+	case SNDRV_PCM_IOCTL_WRITEN_FRAMES:
+	case SNDRV_PCM_IOCTL_READN_FRAMES:
+		return snd_pcm_xfern_frames_ioctl(substream, arg);
+	case SNDRV_PCM_IOCTL_REWIND:
+		return snd_pcm_rewind_ioctl(substream, arg);
+	case SNDRV_PCM_IOCTL_FORWARD:
+		return snd_pcm_forward_ioctl(substream, arg);
 	}
 	pcm_dbg(substream->pcm, "unknown ioctl = 0x%x\n", cmd);
 	return -ENOTTY;
 }
 
-static int snd_pcm_common_ioctl1(struct file *file,
-				 struct snd_pcm_substream *substream,
-				 unsigned int cmd, void __user *arg)
-{
-	struct snd_card *card = substream->pcm->card;
-	int res;
-
-	snd_power_lock(card);
-	res = snd_power_wait(card, SNDRV_CTL_POWER_D0);
-	if (res >= 0)
-		res = snd_pcm_common_ioctl(file, substream, cmd, arg);
-	snd_power_unlock(card);
-	return res;
-}
-
-static int snd_pcm_playback_ioctl1(struct file *file,
-				   struct snd_pcm_substream *substream,
-				   unsigned int cmd, void __user *arg)
-{
-	if (PCM_RUNTIME_CHECK(substream))
-		return -ENXIO;
-	if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK))
-		return -EINVAL;
-	switch (cmd) {
-	case SNDRV_PCM_IOCTL_WRITEI_FRAMES:
-	{
-		struct snd_xferi xferi;
-		struct snd_xferi __user *_xferi = arg;
-		struct snd_pcm_runtime *runtime = substream->runtime;
-		snd_pcm_sframes_t result;
-		if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
-			return -EBADFD;
-		if (put_user(0, &_xferi->result))
-			return -EFAULT;
-		if (copy_from_user(&xferi, _xferi, sizeof(xferi)))
-			return -EFAULT;
-		result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames);
-		__put_user(result, &_xferi->result);
-		return result < 0 ? result : 0;
-	}
-	case SNDRV_PCM_IOCTL_WRITEN_FRAMES:
-	{
-		struct snd_xfern xfern;
-		struct snd_xfern __user *_xfern = arg;
-		struct snd_pcm_runtime *runtime = substream->runtime;
-		void __user **bufs;
-		snd_pcm_sframes_t result;
-		if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
-			return -EBADFD;
-		if (runtime->channels > 128)
-			return -EINVAL;
-		if (put_user(0, &_xfern->result))
-			return -EFAULT;
-		if (copy_from_user(&xfern, _xfern, sizeof(xfern)))
-			return -EFAULT;
-
-		bufs = memdup_user(xfern.bufs,
-				   sizeof(void *) * runtime->channels);
-		if (IS_ERR(bufs))
-			return PTR_ERR(bufs);
-		result = snd_pcm_lib_writev(substream, bufs, xfern.frames);
-		kfree(bufs);
-		__put_user(result, &_xfern->result);
-		return result < 0 ? result : 0;
-	}
-	case SNDRV_PCM_IOCTL_REWIND:
-	{
-		snd_pcm_uframes_t frames;
-		snd_pcm_uframes_t __user *_frames = arg;
-		snd_pcm_sframes_t result;
-		if (get_user(frames, _frames))
-			return -EFAULT;
-		if (put_user(0, _frames))
-			return -EFAULT;
-		result = snd_pcm_playback_rewind(substream, frames);
-		__put_user(result, _frames);
-		return result < 0 ? result : 0;
-	}
-	case SNDRV_PCM_IOCTL_FORWARD:
-	{
-		snd_pcm_uframes_t frames;
-		snd_pcm_uframes_t __user *_frames = arg;
-		snd_pcm_sframes_t result;
-		if (get_user(frames, _frames))
-			return -EFAULT;
-		if (put_user(0, _frames))
-			return -EFAULT;
-		result = snd_pcm_playback_forward(substream, frames);
-		__put_user(result, _frames);
-		return result < 0 ? result : 0;
-	}
-	}
-	return snd_pcm_common_ioctl1(file, substream, cmd, arg);
-}
-
-static int snd_pcm_capture_ioctl1(struct file *file,
-				  struct snd_pcm_substream *substream,
-				  unsigned int cmd, void __user *arg)
-{
-	if (PCM_RUNTIME_CHECK(substream))
-		return -ENXIO;
-	if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE))
-		return -EINVAL;
-	switch (cmd) {
-	case SNDRV_PCM_IOCTL_READI_FRAMES:
-	{
-		struct snd_xferi xferi;
-		struct snd_xferi __user *_xferi = arg;
-		struct snd_pcm_runtime *runtime = substream->runtime;
-		snd_pcm_sframes_t result;
-		if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
-			return -EBADFD;
-		if (put_user(0, &_xferi->result))
-			return -EFAULT;
-		if (copy_from_user(&xferi, _xferi, sizeof(xferi)))
-			return -EFAULT;
-		result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames);
-		__put_user(result, &_xferi->result);
-		return result < 0 ? result : 0;
-	}
-	case SNDRV_PCM_IOCTL_READN_FRAMES:
-	{
-		struct snd_xfern xfern;
-		struct snd_xfern __user *_xfern = arg;
-		struct snd_pcm_runtime *runtime = substream->runtime;
-		void *bufs;
-		snd_pcm_sframes_t result;
-		if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
-			return -EBADFD;
-		if (runtime->channels > 128)
-			return -EINVAL;
-		if (put_user(0, &_xfern->result))
-			return -EFAULT;
-		if (copy_from_user(&xfern, _xfern, sizeof(xfern)))
-			return -EFAULT;
-
-		bufs = memdup_user(xfern.bufs,
-				   sizeof(void *) * runtime->channels);
-		if (IS_ERR(bufs))
-			return PTR_ERR(bufs);
-		result = snd_pcm_lib_readv(substream, bufs, xfern.frames);
-		kfree(bufs);
-		__put_user(result, &_xfern->result);
-		return result < 0 ? result : 0;
-	}
-	case SNDRV_PCM_IOCTL_REWIND:
-	{
-		snd_pcm_uframes_t frames;
-		snd_pcm_uframes_t __user *_frames = arg;
-		snd_pcm_sframes_t result;
-		if (get_user(frames, _frames))
-			return -EFAULT;
-		if (put_user(0, _frames))
-			return -EFAULT;
-		result = snd_pcm_capture_rewind(substream, frames);
-		__put_user(result, _frames);
-		return result < 0 ? result : 0;
-	}
-	case SNDRV_PCM_IOCTL_FORWARD:
-	{
-		snd_pcm_uframes_t frames;
-		snd_pcm_uframes_t __user *_frames = arg;
-		snd_pcm_sframes_t result;
-		if (get_user(frames, _frames))
-			return -EFAULT;
-		if (put_user(0, _frames))
-			return -EFAULT;
-		result = snd_pcm_capture_forward(substream, frames);
-		__put_user(result, _frames);
-		return result < 0 ? result : 0;
-	}
-	}
-	return snd_pcm_common_ioctl1(file, substream, cmd, arg);
-}
-
-static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd,
-				   unsigned long arg)
+static long snd_pcm_ioctl(struct file *file, unsigned int cmd,
+			  unsigned long arg)
 {
 	struct snd_pcm_file *pcm_file;
 
@@ -3031,22 +2958,8 @@ static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd,
 	if (((cmd >> 8) & 0xff) != 'A')
 		return -ENOTTY;
 
-	return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd,
-				       (void __user *)arg);
-}
-
-static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd,
-				  unsigned long arg)
-{
-	struct snd_pcm_file *pcm_file;
-
-	pcm_file = file->private_data;
-
-	if (((cmd >> 8) & 0xff) != 'A')
-		return -ENOTTY;
-
-	return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd,
-				      (void __user *)arg);
+	return snd_pcm_common_ioctl(file, pcm_file->substream, cmd,
+				     (void __user *)arg);
 }
 
 /**
@@ -3064,7 +2977,6 @@ int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream,
 {
 	snd_pcm_uframes_t *frames = arg;
 	snd_pcm_sframes_t result;
-	int err;
 	
 	switch (cmd) {
 	case SNDRV_PCM_IOCTL_FORWARD:
@@ -3084,10 +2996,7 @@ int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream,
 	case SNDRV_PCM_IOCTL_START:
 		return snd_pcm_start_lock_irq(substream);
 	case SNDRV_PCM_IOCTL_DRAIN:
-		snd_power_lock(substream->pcm->card);
-		err = snd_pcm_drain(substream, NULL);
-		snd_power_unlock(substream->pcm->card);
-		return err;
+		return snd_pcm_drain(substream, NULL);
 	case SNDRV_PCM_IOCTL_DROP:
 		return snd_pcm_drop(substream);
 	case SNDRV_PCM_IOCTL_DELAY:
@@ -3791,7 +3700,7 @@ const struct file_operations snd_pcm_f_ops[2] = {
 		.release =		snd_pcm_release,
 		.llseek =		no_llseek,
 		.poll =			snd_pcm_playback_poll,
-		.unlocked_ioctl =	snd_pcm_playback_ioctl,
+		.unlocked_ioctl =	snd_pcm_ioctl,
 		.compat_ioctl = 	snd_pcm_ioctl_compat,
 		.mmap =			snd_pcm_mmap,
 		.fasync =		snd_pcm_fasync,
@@ -3805,7 +3714,7 @@ const struct file_operations snd_pcm_f_ops[2] = {
 		.release =		snd_pcm_release,
 		.llseek =		no_llseek,
 		.poll =			snd_pcm_capture_poll,
-		.unlocked_ioctl =	snd_pcm_capture_ioctl,
+		.unlocked_ioctl =	snd_pcm_ioctl,
 		.compat_ioctl = 	snd_pcm_ioctl_compat,
 		.mmap =			snd_pcm_mmap,
 		.fasync =		snd_pcm_fasync,

sound/core/timer.c

@@ -393,7 +393,8 @@ unsigned long snd_timer_resolution(struct snd_timer_instance *timeri)
 
 	if (timeri == NULL)
 		return 0;
-	if ((timer = timeri->timer) != NULL) {
+	timer = timeri->timer;
+	if (timer) {
 		if (timer->hw.c_resolution)
 			return timer->hw.c_resolution(timer);
 		return timer->hw.resolution;
@@ -2096,8 +2097,7 @@ static int __init alsa_timer_init(void)
 	err = snd_timer_register_system();
 	if (err < 0) {
 		pr_err("ALSA: unable to register system timer (%i)\n", err);
-		put_device(&timer_dev);
-		return err;
+		goto put_timer;
 	}
 
 	err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0,
@@ -2105,12 +2105,15 @@ static int __init alsa_timer_init(void)
 	if (err < 0) {
 		pr_err("ALSA: unable to register timer device (%i)\n", err);
 		snd_timer_free_all();
-		put_device(&timer_dev);
-		return err;
+		goto put_timer;
 	}
 
 	snd_timer_proc_init();
 	return 0;
+
+put_timer:
+	put_device(&timer_dev);
+	return err;
 }
 
 static void __exit alsa_timer_exit(void)

sound/drivers/aloop.c

@@ -561,7 +561,7 @@ static snd_pcm_uframes_t loopback_pointer(struct snd_pcm_substream *substream)
 	return bytes_to_frames(runtime, pos);
 }
 
-static struct snd_pcm_hardware loopback_pcm_hardware =
+static const struct snd_pcm_hardware loopback_pcm_hardware =
 {
 	.info =		(SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP |
 			 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE |
@@ -750,7 +750,7 @@ static int loopback_close(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static struct snd_pcm_ops loopback_playback_ops = {
+static const struct snd_pcm_ops loopback_playback_ops = {
 	.open =		loopback_open,
 	.close =	loopback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -763,7 +763,7 @@ static struct snd_pcm_ops loopback_playback_ops = {
 	.mmap =		snd_pcm_lib_mmap_vmalloc,
 };
 
-static struct snd_pcm_ops loopback_capture_ops = {
+static const struct snd_pcm_ops loopback_capture_ops = {
 	.open =		loopback_open,
 	.close =	loopback_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/drivers/dummy.c

@@ -520,7 +520,7 @@ static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream)
 	return get_dummy_ops(substream)->pointer(substream);
 }
 
-static struct snd_pcm_hardware dummy_pcm_hardware = {
+static const struct snd_pcm_hardware dummy_pcm_hardware = {
 	.info =			(SNDRV_PCM_INFO_MMAP |
 				 SNDRV_PCM_INFO_INTERLEAVED |
 				 SNDRV_PCM_INFO_RESUME |

sound/drivers/ml403-ac97cr.c

@@ -373,7 +373,7 @@ struct snd_ml403_ac97cr {
 	struct snd_pcm_indirect2 capture_ind2_rec;
 };
 
-static struct snd_pcm_hardware snd_ml403_ac97cr_playback = {
+static const struct snd_pcm_hardware snd_ml403_ac97cr_playback = {
 	.info =	            (SNDRV_PCM_INFO_MMAP |
 			     SNDRV_PCM_INFO_INTERLEAVED |
 			     SNDRV_PCM_INFO_MMAP_VALID),
@@ -392,7 +392,7 @@ static struct snd_pcm_hardware snd_ml403_ac97cr_playback = {
 	.fifo_size =	    0,
 };
 
-static struct snd_pcm_hardware snd_ml403_ac97cr_capture = {
+static const struct snd_pcm_hardware snd_ml403_ac97cr_capture = {
 	.info =	            (SNDRV_PCM_INFO_MMAP |
 			     SNDRV_PCM_INFO_INTERLEAVED |
 			     SNDRV_PCM_INFO_MMAP_VALID),
@@ -759,7 +759,7 @@ static int snd_ml403_ac97cr_capture_close(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = {
+static const struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = {
 	.open = snd_ml403_ac97cr_playback_open,
 	.close = snd_ml403_ac97cr_playback_close,
 	.ioctl = snd_pcm_lib_ioctl,
@@ -770,7 +770,7 @@ static struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = {
 	.pointer = snd_ml403_ac97cr_pcm_pointer,
 };
 
-static struct snd_pcm_ops snd_ml403_ac97cr_capture_ops = {
+static const struct snd_pcm_ops snd_ml403_ac97cr_capture_ops = {
 	.open = snd_ml403_ac97cr_capture_open,
 	.close = snd_ml403_ac97cr_capture_close,
 	.ioctl = snd_pcm_lib_ioctl,

sound/drivers/mpu401/mpu401.c

@@ -148,7 +148,7 @@ static struct platform_driver snd_mpu401_driver = {
 
 #define IO_EXTENT 2
 
-static struct pnp_device_id snd_mpu401_pnpids[] = {
+static const struct pnp_device_id snd_mpu401_pnpids[] = {
 	{ .id = "PNPb006" },
 	{ .id = "" }
 };

sound/drivers/mpu401/mpu401_uart.c

@@ -136,7 +136,7 @@ irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id)
 {
 	struct snd_mpu401 *mpu = dev_id;
 	
-	if (mpu == NULL)
+	if (!mpu)
 		return IRQ_NONE;
 	_snd_mpu401_uart_interrupt(mpu);
 	return IRQ_HANDLED;
@@ -157,7 +157,7 @@ irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id)
 {
 	struct snd_mpu401 *mpu = dev_id;
 	
-	if (mpu == NULL)
+	if (!mpu)
 		return IRQ_NONE;
 	uart_interrupt_tx(mpu);
 	return IRQ_HANDLED;
@@ -544,10 +544,9 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
 				   out_enable, in_enable, &rmidi)) < 0)
 		return err;
 	mpu = kzalloc(sizeof(*mpu), GFP_KERNEL);
-	if (mpu == NULL) {
-		snd_printk(KERN_ERR "mpu401_uart: cannot allocate\n");
-		snd_device_free(card, rmidi);
-		return -ENOMEM;
+	if (!mpu) {
+		err = -ENOMEM;
+		goto free_device;
 	}
 	rmidi->private_data = mpu;
 	rmidi->private_free = snd_mpu401_uart_free;
@@ -559,12 +558,12 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
 	if (! (info_flags & MPU401_INFO_INTEGRATED)) {
 		int res_size = hardware == MPU401_HW_PC98II ? 4 : 2;
 		mpu->res = request_region(port, res_size, "MPU401 UART");
-		if (mpu->res == NULL) {
+		if (!mpu->res) {
 			snd_printk(KERN_ERR "mpu401_uart: "
 				   "unable to grab port 0x%lx size %d\n",
 				   port, res_size);
-			snd_device_free(card, rmidi);
-			return -EBUSY;
+			err = -EBUSY;
+			goto free_device;
 		}
 	}
 	if (info_flags & MPU401_INFO_MMIO) {
@@ -584,8 +583,8 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
 				"MPU401 UART", (void *) mpu)) {
 			snd_printk(KERN_ERR "mpu401_uart: "
 				   "unable to grab IRQ %d\n", irq);
-			snd_device_free(card, rmidi);
-			return -EBUSY;
+			err = -EBUSY;
+			goto free_device;
 		}
 	}
 	if (irq < 0 && !(info_flags & MPU401_INFO_IRQ_HOOK))
@@ -613,6 +612,9 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
 	if (rrawmidi)
 		*rrawmidi = rmidi;
 	return 0;
+free_device:
+	snd_device_free(card, rmidi);
+	return err;
 }
 
 EXPORT_SYMBOL(snd_mpu401_uart_new);

sound/drivers/opl3/opl3_lib.c

@@ -355,10 +355,8 @@ int snd_opl3_new(struct snd_card *card,
 
 	*ropl3 = NULL;
 	opl3 = kzalloc(sizeof(*opl3), GFP_KERNEL);
-	if (opl3 == NULL) {
-		snd_printk(KERN_ERR "opl3: cannot allocate\n");
+	if (!opl3)
 		return -ENOMEM;
-	}
 
 	opl3->card = card;
 	opl3->hardware = hardware;

sound/drivers/opl3/opl3_midi.c

@@ -131,8 +131,8 @@ static void debug_alloc(struct snd_opl3 *opl3, char *s, int voice) {
 
 	printk(KERN_DEBUG "time %.5i: %s [%.2i]: ", opl3->use_time, s, voice);
 	for (i = 0; i < opl3->max_voices; i++)
-		printk("%c", *(str + opl3->voices[i].state + 1));
-	printk("\n");
+		printk(KERN_CONT "%c", *(str + opl3->voices[i].state + 1));
+	printk(KERN_CONT "\n");
 }
 #endif