36 files changed, 209 insertions, 154 deletions

diff --git a/sound/arm/sa11xx-uda1341.c b/sound/arm/sa11xx-uda1341.c
index b9c51bf8cd71..8addb9d914c1 100644
--- a/sound/arm/sa11xx-uda1341.c
+++ b/sound/arm/sa11xx-uda1341.c
@@ -442,7 +442,8 @@ static void audio_process_dma(struct audio_stream *s)
                 
         /* we are requested to process synchronization DMA transfer */
         if (s->tx_spin) {
-                snd_assert(s->stream_id == SNDRV_PCM_STREAM_PLAYBACK, return);
+                if (snd_BUG_ON(s->stream_id != SNDRV_PCM_STREAM_PLAYBACK))
+                        return;
                 /* fill the xmit dma buffers and return */
 #ifdef HH_VERSION
                 sa1100_dma_set_spin(s->dmach, FORCE_CLOCK_ADDR, FORCE_CLOCK_SIZE);
@@ -472,7 +473,7 @@ static void audio_process_dma(struct audio_stream *s)
                                 continue;               /* special case */
                 } else {
                         offset = dma_size * s->period;
-                        snd_assert(dma_size <= DMA_BUF_SIZE, );
+                        snd_BUG_ON(dma_size > DMA_BUF_SIZE);
                 }
 #ifdef HH_VERSION
                 ret = sa1100_dma_queue_buffer(s->dmach, s, runtime->dma_addr + offset, dma_size);
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 4e4c69e6cb4c..c873243e6713 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -565,7 +565,8 @@ static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy)
         unsigned int idx;
         int err;
 
-        snd_assert(dummy != NULL, return -EINVAL);
+        if (snd_BUG_ON(!dummy))
+                return -EINVAL;
         spin_lock_init(&dummy->mixer_lock);
         strcpy(card->mixername, "Dummy Mixer");
 
diff --git a/sound/drivers/opl3/opl3_lib.c b/sound/drivers/opl3/opl3_lib.c
index ebe4359047cb..780582340fef 100644
--- a/sound/drivers/opl3/opl3_lib.c
+++ b/sound/drivers/opl3/opl3_lib.c
@@ -139,7 +139,8 @@ static int snd_opl3_detect(struct snd_opl3 * opl3)
                  * If we had an OPL4 chip, opl3->hardware would have been set
                  * by the OPL4 driver; so we can assume OPL3 here.
                  */
-                snd_assert(opl3->r_port != 0, return -ENODEV);
+                if (snd_BUG_ON(!opl3->r_port))
+                        return -ENODEV;
                 opl3->hardware = OPL3_HW_OPL3;
         }
         return 0;
@@ -324,7 +325,8 @@ EXPORT_SYMBOL(snd_opl3_interrupt);
 
 static int snd_opl3_free(struct snd_opl3 *opl3)
 {
-        snd_assert(opl3 != NULL, return -ENXIO);
+        if (snd_BUG_ON(!opl3))
+                return -ENXIO;
         if (opl3->private_free)
                 opl3->private_free(opl3);
         snd_opl3_clear_patches(opl3);
diff --git a/sound/drivers/opl3/opl3_midi.c b/sound/drivers/opl3/opl3_midi.c
index cebcb8b78acb..16feafa2c51e 100644
--- a/sound/drivers/opl3/opl3_midi.c
+++ b/sound/drivers/opl3/opl3_midi.c
@@ -617,7 +617,8 @@ static void snd_opl3_kill_voice(struct snd_opl3 *opl3, int voice)
 
         struct snd_opl3_voice *vp, *vp2;
 
-        snd_assert(voice < MAX_OPL3_VOICES, return);
+        if (snd_BUG_ON(voice >= MAX_OPL3_VOICES))
+                return;
 
         vp = &opl3->voices[voice];
         if (voice < MAX_OPL2_VOICES) {
@@ -737,7 +738,8 @@ static void snd_opl3_update_pitch(struct snd_opl3 *opl3, int voice)
 
         struct snd_opl3_voice *vp;
 
-        snd_assert(voice < MAX_OPL3_VOICES, return);
+        if (snd_BUG_ON(voice >= MAX_OPL3_VOICES))
+                return;
 
         vp = &opl3->voices[voice];
         if (vp->chan == NULL)
diff --git a/sound/drivers/opl3/opl3_oss.c b/sound/drivers/opl3/opl3_oss.c
index 239347f26154..9a2271dc046a 100644
--- a/sound/drivers/opl3/opl3_oss.c
+++ b/sound/drivers/opl3/opl3_oss.c
@@ -162,7 +162,8 @@ static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
         struct snd_opl3 *opl3 = closure;
         int err;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
 
         if ((err = snd_opl3_synth_setup(opl3)) < 0)
                 return err;
@@ -184,7 +185,8 @@ static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
 {
         struct snd_opl3 *opl3;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         opl3 = arg->private_data;
 
         snd_opl3_synth_cleanup(opl3);
@@ -206,7 +208,8 @@ static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
         char name[32];
         int err, type;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         opl3 = arg->private_data;
 
         if (format == FM_PATCH)
@@ -246,7 +249,8 @@ static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
 {
         struct snd_opl3 *opl3;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         opl3 = arg->private_data;
         switch (cmd) {
                 case SNDCTL_FM_LOAD_INSTR:
@@ -271,7 +275,8 @@ static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
 {
         struct snd_opl3 *opl3;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         opl3 = arg->private_data;
 
         return 0;
diff --git a/sound/drivers/opl3/opl3_synth.c b/sound/drivers/opl3/opl3_synth.c
index fb64c890109b..962bb9c8b9c8 100644
--- a/sound/drivers/opl3/opl3_synth.c
+++ b/sound/drivers/opl3/opl3_synth.c
@@ -92,7 +92,8 @@ int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
         struct snd_opl3 *opl3 = hw->private_data;
         void __user *argp = (void __user *)arg;
 
-        snd_assert(opl3 != NULL, return -EINVAL);
+        if (snd_BUG_ON(!opl3))
+                return -EINVAL;
 
         switch (cmd) {
                 /* get information */
diff --git a/sound/drivers/opl4/opl4_synth.c b/sound/drivers/opl4/opl4_synth.c
index 74f6e53eae0d..49b9e240915c 100644
--- a/sound/drivers/opl4/opl4_synth.c
+++ b/sound/drivers/opl4/opl4_synth.c
@@ -467,7 +467,7 @@ static struct opl4_voice *snd_opl4_get_voice(struct snd_opl4 *opl4)
         if (!list_empty(&opl4->off_voices))
                 return list_entry(opl4->off_voices.next, struct opl4_voice, list);
         /* then get the oldest key-on voice */
-        snd_assert(!list_empty(&opl4->on_voices), );
+        snd_BUG_ON(list_empty(&opl4->on_voices));
         return list_entry(opl4->on_voices.next, struct opl4_voice, list);
 }
 
diff --git a/sound/drivers/vx/vx_cmd.c b/sound/drivers/vx/vx_cmd.c
index 9529e3bf2866..23f4857f02c8 100644
--- a/sound/drivers/vx/vx_cmd.c
+++ b/sound/drivers/vx/vx_cmd.c
@@ -99,7 +99,8 @@ static struct vx_cmd_info vx_dsp_cmds[] = {
  */
 void vx_init_rmh(struct vx_rmh *rmh, unsigned int cmd)
 {
-        snd_assert(cmd < CMD_LAST_INDEX, return);
+        if (snd_BUG_ON(cmd >= CMD_LAST_INDEX))
+                return;
         rmh->LgCmd = vx_dsp_cmds[cmd].length;
         rmh->LgStat = vx_dsp_cmds[cmd].st_length;
         rmh->DspStat = vx_dsp_cmds[cmd].st_type;
diff --git a/sound/drivers/vx/vx_core.c b/sound/drivers/vx/vx_core.c
index 585af2eb1438..473b07f6ae85 100644
--- a/sound/drivers/vx/vx_core.c
+++ b/sound/drivers/vx/vx_core.c
@@ -205,7 +205,8 @@ static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
 
         if (size < 1)
                 return 0;
-        snd_assert(size <= SIZE_MAX_STATUS, return -EINVAL);
+        if (snd_BUG_ON(size > SIZE_MAX_STATUS))
+                return -EINVAL;
 
         for (i = 1; i <= size; i++) {
                 /* trigger an irq MESS_WRITE_NEXT */
@@ -425,13 +426,16 @@ int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
         int no_fillup = vx_has_new_dsp(chip);
 
         /* check the length of boot image */
-        snd_assert(boot->size > 0, return -EINVAL);
-        snd_assert(boot->size % 3 == 0, return -EINVAL);
+        if (boot->size <= 0)
+                return -EINVAL;
+        if (boot->size % 3)
+                return -EINVAL;
 #if 0
         {
                 /* more strict check */
                 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
-                snd_assert(boot->size == (c + 2) * 3, return -EINVAL);
+                if (boot->size != (c + 2) * 3)
+                        return -EINVAL;
         }
 #endif
 
@@ -554,7 +558,8 @@ EXPORT_SYMBOL(snd_vx_irq_handler);
  */
 static void vx_reset_board(struct vx_core *chip, int cold_reset)
 {
-        snd_assert(chip->ops->reset_board, return);
+        if (snd_BUG_ON(!chip->ops->reset_board))
+                return;
 
         /* current source, later sync'ed with target */
         chip->audio_source = VX_AUDIO_SRC_LINE;
@@ -673,7 +678,8 @@ int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
         unsigned int csum = 0;
         const unsigned char *image, *cptr;
 
-        snd_assert(dsp->size % 3 == 0, return -EINVAL);
+        if (dsp->size % 3)
+                return -EINVAL;
 
         vx_toggle_dac_mute(chip, 1);
 
@@ -775,7 +781,8 @@ struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
 {
         struct vx_core *chip;
 
-        snd_assert(card && hw && ops, return NULL);
+        if (snd_BUG_ON(!card || !hw || !ops))
+                return NULL;
 
         chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
         if (! chip) {
diff --git a/sound/drivers/vx/vx_hwdep.c b/sound/drivers/vx/vx_hwdep.c
index efd22e92bced..8d6362e2d4c9 100644
--- a/sound/drivers/vx/vx_hwdep.c
+++ b/sound/drivers/vx/vx_hwdep.c
@@ -141,7 +141,8 @@ static int vx_hwdep_dsp_status(struct snd_hwdep *hw,
         };
         struct vx_core *vx = hw->private_data;
 
-        snd_assert(type_ids[vx->type], return -EINVAL);
+        if (snd_BUG_ON(!type_ids[vx->type]))
+                return -EINVAL;
         strcpy(info->id, type_ids[vx->type]);
         if (vx_is_pcmcia(vx))
                 info->num_dsps = 4;
@@ -168,7 +169,8 @@ static int vx_hwdep_dsp_load(struct snd_hwdep *hw,
         int index, err;
         struct firmware *fw;
 
-        snd_assert(vx->ops->load_dsp, return -ENXIO);
+        if (snd_BUG_ON(!vx->ops->load_dsp))
+                return -ENXIO;
 
         fw = kmalloc(sizeof(*fw), GFP_KERNEL);
         if (! fw) {
diff --git a/sound/drivers/vx/vx_mixer.c b/sound/drivers/vx/vx_mixer.c
index 5a347321f8c0..c71b8d148d7f 100644
--- a/sound/drivers/vx/vx_mixer.c
+++ b/sound/drivers/vx/vx_mixer.c
@@ -34,7 +34,8 @@ static void vx_write_codec_reg(struct vx_core *chip, int codec, unsigned int dat
 {
         unsigned long flags;
 
-        snd_assert(chip->ops->write_codec, return);
+        if (snd_BUG_ON(!chip->ops->write_codec))
+                return;
 
         if (chip->chip_status & VX_STAT_IS_STALE)
                 return;
diff --git a/sound/drivers/vx/vx_pcm.c b/sound/drivers/vx/vx_pcm.c
index fdbf86571b1f..27de574c08f7 100644
--- a/sound/drivers/vx/vx_pcm.c
+++ b/sound/drivers/vx/vx_pcm.c
@@ -587,7 +587,8 @@ static int vx_pcm_playback_open(struct snd_pcm_substream *subs)
                 return -EBUSY;
 
         audio = subs->pcm->device * 2;
-        snd_assert(audio < chip->audio_outs, return -EINVAL);
+        if (snd_BUG_ON(audio >= chip->audio_outs))
+                return -EINVAL;
         
         /* playback pipe may have been already allocated for monitoring */
         pipe = chip->playback_pipes[audio];
@@ -996,7 +997,8 @@ static int vx_pcm_capture_open(struct snd_pcm_substream *subs)
                 return -EBUSY;
 
         audio = subs->pcm->device * 2;
-        snd_assert(audio < chip->audio_ins, return -EINVAL);
+        if (snd_BUG_ON(audio >= chip->audio_ins))
+                return -EINVAL;
         err = vx_alloc_pipe(chip, 1, audio, 2, &pipe);
         if (err < 0)
                 return err;
@@ -1214,7 +1216,8 @@ void vx_pcm_update_intr(struct vx_core *chip, unsigned int events)
                         }
                         if (capture)
                                 continue;
-                        snd_assert(p >= 0 && (unsigned int)p < chip->audio_outs,);
+                        if (snd_BUG_ON(p < 0 || p >= chip->audio_outs))
+                                continue;
                         pipe = chip->playback_pipes[p];
                         if (pipe && pipe->substream) {
                                 vx_pcm_playback_update(chip, pipe->substream, pipe);
diff --git a/sound/drivers/vx/vx_uer.c b/sound/drivers/vx/vx_uer.c
index fb8932af888d..0e1ba9b47904 100644
--- a/sound/drivers/vx/vx_uer.c
+++ b/sound/drivers/vx/vx_uer.c
@@ -163,13 +163,15 @@ static int vx_calc_clock_from_freq(struct vx_core *chip, int freq)
 {
         int hexfreq;
 
-        snd_assert(freq > 0, return 0);
+        if (snd_BUG_ON(freq <= 0))
+                return 0;
 
         hexfreq = (28224000 * 10) / freq;
         hexfreq = (hexfreq + 5) / 10;
 
         /* max freq = 55125 Hz */
-        snd_assert(hexfreq > 0x00000200, return 0);
+        if (snd_BUG_ON(hexfreq <= 0x00000200))
+                return 0;
 
         if (hexfreq <= 0x03ff)
                 return hexfreq - 0x00000201;
diff --git a/sound/i2c/cs8427.c b/sound/i2c/cs8427.c
index 9c3d361accfb..020a5d512472 100644
--- a/sound/i2c/cs8427.c
+++ b/sound/i2c/cs8427.c
@@ -314,7 +314,8 @@ static void snd_cs8427_reset(struct snd_i2c_device *cs8427)
         unsigned long end_time;
         int data, aes3input = 0;
 
-        snd_assert(cs8427, return);
+        if (snd_BUG_ON(!cs8427))
+                return;
         chip = cs8427->private_data;
         snd_i2c_lock(cs8427->bus);
         if ((chip->regmap[CS8427_REG_CLOCKSOURCE] & CS8427_RXDAES3INPUT) ==
@@ -526,7 +527,8 @@ int snd_cs8427_iec958_build(struct snd_i2c_device *cs8427,
         unsigned int idx;
         int err;
 
-        snd_assert(play_substream && cap_substream, return -EINVAL);
+        if (snd_BUG_ON(!play_substream || !cap_substream))
+                return -EINVAL;
         for (idx = 0; idx < ARRAY_SIZE(snd_cs8427_iec958_controls); idx++) {
                 kctl = snd_ctl_new1(&snd_cs8427_iec958_controls[idx], cs8427);
                 if (kctl == NULL)
@@ -543,7 +545,8 @@ int snd_cs8427_iec958_build(struct snd_i2c_device *cs8427,
 
         chip->playback.substream = play_substream;
         chip->capture.substream = cap_substream;
-        snd_assert(chip->playback.pcm_ctl, return -EIO);
+        if (snd_BUG_ON(!chip->playback.pcm_ctl))
+                return -EIO;
         return 0;
 }
 
@@ -553,7 +556,8 @@ int snd_cs8427_iec958_active(struct snd_i2c_device *cs8427, int active)
 {
         struct cs8427 *chip;
 
-        snd_assert(cs8427, return -ENXIO);
+        if (snd_BUG_ON(!cs8427))
+                return -ENXIO;
         chip = cs8427->private_data;
         if (active)
                 memcpy(chip->playback.pcm_status,
@@ -573,7 +577,8 @@ int snd_cs8427_iec958_pcm(struct snd_i2c_device *cs8427, unsigned int rate)
         char *status;
         int err, reset;
 
-        snd_assert(cs8427, return -ENXIO);
+        if (snd_BUG_ON(!cs8427))
+                return -ENXIO;
         chip = cs8427->private_data;
         status = chip->playback.pcm_status;
         snd_i2c_lock(cs8427->bus);
diff --git a/sound/i2c/i2c.c b/sound/i2c/i2c.c
index b1e74e40cba0..5c0c77dd01c3 100644
--- a/sound/i2c/i2c.c
+++ b/sound/i2c/i2c.c
@@ -49,7 +49,8 @@ static int snd_i2c_bus_free(struct snd_i2c_bus *bus)
         struct snd_i2c_bus *slave;
         struct snd_i2c_device *device;
 
-        snd_assert(bus != NULL, return -EINVAL);
+        if (snd_BUG_ON(!bus))
+                return -EINVAL;
         while (!list_empty(&bus->devices)) {
                 device = snd_i2c_device(bus->devices.next);
                 snd_i2c_device_free(device);
@@ -113,7 +114,8 @@ int snd_i2c_device_create(struct snd_i2c_bus *bus, const char *name,
         struct snd_i2c_device *device;
 
         *rdevice = NULL;
-        snd_assert(bus != NULL, return -EINVAL);
+        if (snd_BUG_ON(!bus))
+                return -EINVAL;
         device = kzalloc(sizeof(*device), GFP_KERNEL);
         if (device == NULL)
                 return -ENOMEM;
diff --git a/sound/i2c/l3/uda1341.c b/sound/i2c/l3/uda1341.c
index 1f4942ea1414..9840eb43648d 100644
--- a/sound/i2c/l3/uda1341.c
+++ b/sound/i2c/l3/uda1341.c
@@ -771,7 +771,8 @@ int __init snd_chip_uda1341_mixer_new(struct snd_card *card, struct l3_client **
         struct l3_client *clnt;
         int idx, err;
 
-        snd_assert(card != NULL, return -EINVAL);
+        if (snd_BUG_ON(!card))
+                return -EINVAL;
 
         clnt = kzalloc(sizeof(*clnt), GFP_KERNEL);
         if (clnt == NULL)
diff --git a/sound/i2c/other/ak4114.c b/sound/i2c/other/ak4114.c
index d20d893b3b60..0341451f814c 100644
--- a/sound/i2c/other/ak4114.c
+++ b/sound/i2c/other/ak4114.c
@@ -475,7 +475,8 @@ int snd_ak4114_build(struct ak4114 *ak4114,
         unsigned int idx;
         int err;
 
-        snd_assert(cap_substream, return -EINVAL);
+        if (snd_BUG_ON(!cap_substream))
+                return -EINVAL;
         ak4114->playback_substream = ply_substream;
         ak4114->capture_substream = cap_substream;
         for (idx = 0; idx < AK4114_CONTROLS; idx++) {
diff --git a/sound/i2c/other/ak4117.c b/sound/i2c/other/ak4117.c
index f350835ade96..2cad2d612518 100644
--- a/sound/i2c/other/ak4117.c
+++ b/sound/i2c/other/ak4117.c
@@ -431,7 +431,8 @@ int snd_ak4117_build(struct ak4117 *ak4117, struct snd_pcm_substream *cap_substr
         unsigned int idx;
         int err;
 
-        snd_assert(cap_substream, return -EINVAL);
+        if (snd_BUG_ON(!cap_substream))
+                return -EINVAL;
         ak4117->substream = cap_substream;
         for (idx = 0; idx < AK4117_CONTROLS; idx++) {
                 kctl = snd_ctl_new1(&snd_ak4117_iec958_controls[idx], ak4117);
diff --git a/sound/mips/au1x00.c b/sound/mips/au1x00.c
index fbef38a9604a..1881cec11e78 100644
--- a/sound/mips/au1x00.c
+++ b/sound/mips/au1x00.c
@@ -190,14 +190,16 @@ au1000_setup_dma_link(struct audio_stream *stream, unsigned int period_bytes,
 static void
 au1000_dma_stop(struct audio_stream *stream)
 {
-        snd_assert(stream->buffer, return);
+        if (snd_BUG_ON(!stream->buffer))
+                return;
         disable_dma(stream->dma);
 }
 
 static void
 au1000_dma_start(struct audio_stream *stream)
 {
-        snd_assert(stream->buffer, return);
+        if (snd_BUG_ON(!stream->buffer))
+                return;
 
         init_dma(stream->dma);
         if (get_dma_active_buffer(stream->dma) == 0) {
diff --git a/sound/parisc/harmony.c b/sound/parisc/harmony.c
index 99f5483abf2e..774372fe34ad 100644
--- a/sound/parisc/harmony.c
+++ b/sound/parisc/harmony.c
@@ -868,7 +868,8 @@ snd_harmony_mixer_init(struct snd_harmony *h)
         struct snd_card *card = h->card;
         int idx, err;
 
-        snd_assert(h != NULL, return -EINVAL);
+        if (snd_BUG_ON(!h))
+                reutrn -EINVAL;
         strcpy(card->mixername, "Harmony Gain control interface");
 
         for (idx = 0; idx < HARMONY_CONTROLS; idx++) {
diff --git a/sound/pcmcia/vx/vxp_ops.c b/sound/pcmcia/vx/vxp_ops.c
index 99bf2a65a6f5..989e04abb520 100644
--- a/sound/pcmcia/vx/vxp_ops.c
+++ b/sound/pcmcia/vx/vxp_ops.c
@@ -408,7 +408,8 @@ static void vxp_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime,
         int offset = pipe->hw_ptr;
         unsigned short *addr = (unsigned short *)(runtime->dma_area + offset);
 
-        snd_assert(count % 2 == 0, return);
+        if (snd_BUG_ON(count % 2))
+                return;
         vx_setup_pseudo_dma(chip, 0);
         if (offset + count > pipe->buffer_bytes) {
                 int length = pipe->buffer_bytes - offset;
diff --git a/sound/ppc/awacs.c b/sound/ppc/awacs.c
index 106c48225bba..7bd33e6552ab 100644
--- a/sound/ppc/awacs.c
+++ b/sound/ppc/awacs.c
@@ -319,7 +319,8 @@ static void awacs_amp_set_master(struct awacs_amp *amp, int vol)
 static void awacs_amp_free(struct snd_pmac *chip)
 {
         struct awacs_amp *amp = chip->mixer_data;
-        snd_assert(amp, return);
+        if (!amp)
+                return;
         kfree(amp);
         chip->mixer_data = NULL;
         chip->mixer_free = NULL;
@@ -345,8 +346,7 @@ static int snd_pmac_awacs_get_volume_amp(struct snd_kcontrol *kcontrol,
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         int index = kcontrol->private_value;
         struct awacs_amp *amp = chip->mixer_data;
-        snd_assert(amp, return -EINVAL);
-        snd_assert(index >= 0 && index <= 1, return -EINVAL);
+
         ucontrol->value.integer.value[0] = 31 - (amp->amp_vol[index][0] & 31);
         ucontrol->value.integer.value[1] = 31 - (amp->amp_vol[index][1] & 31);
         return 0;
@@ -359,8 +359,6 @@ static int snd_pmac_awacs_put_volume_amp(struct snd_kcontrol *kcontrol,
         int index = kcontrol->private_value;
         int vol[2];
         struct awacs_amp *amp = chip->mixer_data;
-        snd_assert(amp, return -EINVAL);
-        snd_assert(index >= 0 && index <= 1, return -EINVAL);
 
         vol[0] = (31 - (ucontrol->value.integer.value[0] & 31))
                 | (amp->amp_vol[index][0] & 32);
@@ -375,8 +373,7 @@ static int snd_pmac_awacs_get_switch_amp(struct snd_kcontrol *kcontrol,
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         int index = kcontrol->private_value;
         struct awacs_amp *amp = chip->mixer_data;
-        snd_assert(amp, return -EINVAL);
-        snd_assert(index >= 0 && index <= 1, return -EINVAL);
+
         ucontrol->value.integer.value[0] = (amp->amp_vol[index][0] & 32)
                                         ? 0 : 1;
         ucontrol->value.integer.value[1] = (amp->amp_vol[index][1] & 32)
@@ -391,8 +388,6 @@ static int snd_pmac_awacs_put_switch_amp(struct snd_kcontrol *kcontrol,
         int index = kcontrol->private_value;
         int vol[2];
         struct awacs_amp *amp = chip->mixer_data;
-        snd_assert(amp, return -EINVAL);
-        snd_assert(index >= 0 && index <= 1, return -EINVAL);
 
         vol[0] = (ucontrol->value.integer.value[0] ? 0 : 32)
                 | (amp->amp_vol[index][0] & 31);
@@ -417,8 +412,7 @@ static int snd_pmac_awacs_get_tone_amp(struct snd_kcontrol *kcontrol,
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         int index = kcontrol->private_value;
         struct awacs_amp *amp = chip->mixer_data;
-        snd_assert(amp, return -EINVAL);
-        snd_assert(index >= 0 && index <= 1, return -EINVAL);
+
         ucontrol->value.integer.value[0] = amp->amp_tone[index];
         return 0;
 }
@@ -430,8 +424,7 @@ static int snd_pmac_awacs_put_tone_amp(struct snd_kcontrol *kcontrol,
         int index = kcontrol->private_value;
         struct awacs_amp *amp = chip->mixer_data;
         unsigned int val;
-        snd_assert(amp, return -EINVAL);
-        snd_assert(index >= 0 && index <= 1, return -EINVAL);
+
         val = ucontrol->value.integer.value[0];
         if (val > 14)
                 return -EINVAL;
@@ -458,7 +451,7 @@ static int snd_pmac_awacs_get_master_amp(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct awacs_amp *amp = chip->mixer_data;
-        snd_assert(amp, return -EINVAL);
+
         ucontrol->value.integer.value[0] = amp->amp_master;
         return 0;
 }
@@ -469,7 +462,7 @@ static int snd_pmac_awacs_put_master_amp(struct snd_kcontrol *kcontrol,
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct awacs_amp *amp = chip->mixer_data;
         unsigned int val;
-        snd_assert(amp, return -EINVAL);
+
         val = ucontrol->value.integer.value[0];
         if (val > 99)
                 return -EINVAL;
diff --git a/sound/ppc/beep.c b/sound/ppc/beep.c
index baa2a7237370..89f5c328acfe 100644
--- a/sound/ppc/beep.c
+++ b/sound/ppc/beep.c
@@ -185,7 +185,8 @@ static int snd_pmac_get_beep(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
-        snd_assert(chip->beep, return -ENXIO);
+        if (snd_BUG_ON(!chip->beep))
+                return -ENXIO;
         ucontrol->value.integer.value[0] = chip->beep->volume;
         return 0;
 }
@@ -195,7 +196,8 @@ static int snd_pmac_put_beep(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         unsigned int oval, nval;
-        snd_assert(chip->beep, return -ENXIO);
+        if (snd_BUG_ON(!chip->beep))
+                return -ENXIO;
         oval = chip->beep->volume;
         nval = ucontrol->value.integer.value[0];
         if (nval > 100)
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 009df8dd37a8..f746e15b8481 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -263,7 +263,7 @@ static int tumbler_get_master_volume(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_tumbler *mix = chip->mixer_data;
-        snd_assert(mix, return -ENODEV);
+
         ucontrol->value.integer.value[0] = mix->master_vol[0];
         ucontrol->value.integer.value[1] = mix->master_vol[1];
         return 0;
@@ -277,7 +277,6 @@ static int tumbler_put_master_volume(struct snd_kcontrol *kcontrol,
         unsigned int vol[2];
         int change;
 
-        snd_assert(mix, return -ENODEV);
         vol[0] = ucontrol->value.integer.value[0];
         vol[1] = ucontrol->value.integer.value[1];
         if (vol[0] >= ARRAY_SIZE(master_volume_table) ||
@@ -299,7 +298,7 @@ static int tumbler_get_master_switch(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_tumbler *mix = chip->mixer_data;
-        snd_assert(mix, return -ENODEV);
+
         ucontrol->value.integer.value[0] = mix->master_switch[0];
         ucontrol->value.integer.value[1] = mix->master_switch[1];
         return 0;
@@ -312,7 +311,6 @@ static int tumbler_put_master_switch(struct snd_kcontrol *kcontrol,
         struct pmac_tumbler *mix = chip->mixer_data;
         int change;
 
-        snd_assert(mix, return -ENODEV);
         change = mix->master_switch[0] != ucontrol->value.integer.value[0] ||
                 mix->master_switch[1] != ucontrol->value.integer.value[1];
         if (change) {
@@ -807,7 +805,6 @@ static int snapper_get_capture_source(struct snd_kcontrol *kcontrol,
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_tumbler *mix = chip->mixer_data;
 
-        snd_assert(mix, return -ENODEV);
         ucontrol->value.enumerated.item[0] = mix->capture_source;
         return 0;
 }
@@ -819,7 +816,6 @@ static int snapper_put_capture_source(struct snd_kcontrol *kcontrol,
         struct pmac_tumbler *mix = chip->mixer_data;
         int change;
 
-        snd_assert(mix, return -ENODEV);
         change = ucontrol->value.enumerated.item[0] != mix->capture_source;
         if (change) {
                 mix->capture_source = !!ucontrol->value.enumerated.item[0];
@@ -978,7 +974,8 @@ static void device_change_handler(struct work_struct *work)
                 return;
 
         mix = chip->mixer_data;
-        snd_assert(mix, return);
+        if (snd_BUG_ON(!mix))
+                return;
 
         headphone = tumbler_detect_headphone(chip);
         lineout = tumbler_detect_lineout(chip);
@@ -1033,7 +1030,8 @@ static void tumbler_update_automute(struct snd_pmac *chip, int do_notify)
         if (chip->auto_mute) {
                 struct pmac_tumbler *mix;
                 mix = chip->mixer_data;
-                snd_assert(mix, return);
+                if (snd_BUG_ON(!mix))
+                        return;
                 mix->auto_mute_notify = do_notify;
                 schedule_work(&device_change);
         }
@@ -1227,8 +1225,6 @@ static void tumbler_resume(struct snd_pmac *chip)
 {
         struct pmac_tumbler *mix = chip->mixer_data;
 
-        snd_assert(mix, return);
-
         mix->acs &= ~1;
         mix->master_switch[0] = mix->save_master_switch[0];
         mix->master_switch[1] = mix->save_master_switch[1];
@@ -1275,7 +1271,6 @@ static int __init tumbler_init(struct snd_pmac *chip)
 {
         int irq;
         struct pmac_tumbler *mix = chip->mixer_data;
-        snd_assert(mix, return -EINVAL);
 
         if (tumbler_find_device("audio-hw-reset",
                                 "platform-do-hw-reset",
diff --git a/sound/sh/aica.c b/sound/sh/aica.c
index 54df8baf916f..55031d0a6558 100644
--- a/sound/sh/aica.c
+++ b/sound/sh/aica.c
@@ -106,7 +106,8 @@ static void spu_memset(u32 toi, u32 what, int length)
 {
         int i;
         unsigned long flags;
-        snd_assert(length % 4 == 0, return);
+        if (snd_BUG_ON(length % 4))
+                return;
         for (i = 0; i < length; i++) {
                 if (!(i % 8))
                         spu_write_wait();
diff --git a/sound/sparc/amd7930.c b/sound/sparc/amd7930.c
index 0c63e0585b15..49acee0c4840 100644
--- a/sound/sparc/amd7930.c
+++ b/sound/sparc/amd7930.c
@@ -765,7 +765,6 @@ static int __devinit snd_amd7930_pcm(struct snd_amd7930 *amd)
                                /* playback count */ 1,
                                /* capture count */  1, &pcm)) < 0)
                 return err;
-        snd_assert(pcm != NULL, return -EINVAL);
 
         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_amd7930_playback_ops);
         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_amd7930_capture_ops);
@@ -788,13 +787,6 @@ static int __devinit snd_amd7930_pcm(struct snd_amd7930 *amd)
 
 static int snd_amd7930_info_volume(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo)
 {
-        int type = kctl->private_value;
-
-        snd_assert(type == VOLUME_MONITOR ||
-                   type == VOLUME_CAPTURE ||
-                   type == VOLUME_PLAYBACK, return -EINVAL);
-        (void) type;
-
         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
         uinfo->count = 1;
         uinfo->value.integer.min = 0;
@@ -809,10 +801,6 @@ static int snd_amd7930_get_volume(struct snd_kcontrol *kctl, struct snd_ctl_elem
         int type = kctl->private_value;
         int *swval;
 
-        snd_assert(type == VOLUME_MONITOR ||
-                   type == VOLUME_CAPTURE ||
-                   type == VOLUME_PLAYBACK, return -EINVAL);
-
         switch (type) {
         case VOLUME_MONITOR:
                 swval = &amd->mgain;
@@ -838,10 +826,6 @@ static int snd_amd7930_put_volume(struct snd_kcontrol *kctl, struct snd_ctl_elem
         int type = kctl->private_value;
         int *swval, change;
 
-        snd_assert(type == VOLUME_MONITOR ||
-                   type == VOLUME_CAPTURE ||
-                   type == VOLUME_PLAYBACK, return -EINVAL);
-
         switch (type) {
         case VOLUME_MONITOR:
                 swval = &amd->mgain;
@@ -904,7 +888,8 @@ static int __devinit snd_amd7930_mixer(struct snd_amd7930 *amd)
         struct snd_card *card;
         int idx, err;
 
-        snd_assert(amd != NULL && amd->card != NULL, return -EINVAL);
+        if (snd_BUG_ON(!amd || !amd->card))
+                return -EINVAL;
 
         card = amd->card;
         strcpy(card->mixername, card->shortname);
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index 1c4797be72ee..791d2fb821d1 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -1560,7 +1560,8 @@ static int __init snd_cs4231_mixer(struct snd_card *card)
         struct snd_cs4231 *chip = card->private_data;
         int err, idx;
 
-        snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
+        if (snd_BUG_ON(!chip || !chip->pcm))
+                return -EINVAL;
 
         strcpy(card->mixername, chip->pcm->name);
 
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index ee2e1b4f3551..c534a2a849fa 100644
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -2223,7 +2223,6 @@ static int __devinit snd_dbri_pcm(struct snd_card *card)
                                /* playback count */ 1,
                                /* capture count */  1, &pcm)) < 0)
                 return err;
-        snd_assert(pcm != NULL, return -EINVAL);
 
         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_dbri_ops);
         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_dbri_ops);
@@ -2263,9 +2262,10 @@ static int snd_cs4215_get_volume(struct snd_kcontrol *kcontrol,
 {
         struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol);
         struct dbri_streaminfo *info;
-        snd_assert(dbri != NULL, return -EINVAL);
+
+        if (snd_BUG_ON(!dbri))
+                return -EINVAL;
         info = &dbri->stream_info[kcontrol->private_value];
-        snd_assert(info != NULL, return -EINVAL);
 
         ucontrol->value.integer.value[0] = info->left_gain;
         ucontrol->value.integer.value[1] = info->right_gain;
@@ -2331,7 +2331,9 @@ static int snd_cs4215_get_single(struct snd_kcontrol *kcontrol,
         int shift = (kcontrol->private_value >> 8) & 0xff;
         int mask = (kcontrol->private_value >> 16) & 0xff;
         int invert = (kcontrol->private_value >> 24) & 1;
-        snd_assert(dbri != NULL, return -EINVAL);
+
+        if (snd_BUG_ON(!dbri))
+                return -EINVAL;
 
         if (elem < 4)
                 ucontrol->value.integer.value[0] =
@@ -2356,7 +2358,9 @@ static int snd_cs4215_put_single(struct snd_kcontrol *kcontrol,
         int invert = (kcontrol->private_value >> 24) & 1;
         int changed = 0;
         unsigned short val;
-        snd_assert(dbri != NULL, return -EINVAL);
+
+        if (snd_BUG_ON(!dbri))
+                return -EINVAL;
 
         val = (ucontrol->value.integer.value[0] & mask);
         if (invert == 1)
@@ -2432,7 +2436,8 @@ static int __devinit snd_dbri_mixer(struct snd_card *card)
         int idx, err;
         struct snd_dbri *dbri;
 
-        snd_assert(card != NULL && card->private_data != NULL, return -EINVAL);
+        if (snd_BUG_ON(!card || !card->private_data))
+                return -EINVAL;
         dbri = card->private_data;
 
         strcpy(card->mixername, card->shortname);
diff --git a/sound/synth/emux/emux.c b/sound/synth/emux/emux.c
index c89d2ea594b9..f16a3fce4597 100644
--- a/sound/synth/emux/emux.c
+++ b/sound/synth/emux/emux.c
@@ -93,10 +93,10 @@ int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, ch
         int err;
         struct snd_sf_callback sf_cb;
 
-        snd_assert(emu->hw != NULL, return -EINVAL);
-        snd_assert(emu->max_voices > 0, return -EINVAL);
-        snd_assert(card != NULL, return -EINVAL);
-        snd_assert(name != NULL, return -EINVAL);
+        if (snd_BUG_ON(!emu->hw || emu->max_voices <= 0))
+                return -EINVAL;
+        if (snd_BUG_ON(!card || !name))
+                return -EINVAL;
 
         emu->card = card;
         emu->name = kstrdup(name, GFP_KERNEL);
diff --git a/sound/synth/emux/emux_nrpn.c b/sound/synth/emux/emux_nrpn.c
index c6917ba2c934..00fc005ecf6e 100644
--- a/sound/synth/emux/emux_nrpn.c
+++ b/sound/synth/emux/emux_nrpn.c
@@ -289,8 +289,8 @@ snd_emux_nrpn(void *p, struct snd_midi_channel *chan,
         struct snd_emux_port *port;
 
         port = p;
-        snd_assert(port != NULL, return);
-        snd_assert(chan != NULL, return);
+        if (snd_BUG_ON(!port || !chan))
+                return;
 
         if (chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB] == 127 &&
             chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB] <= 26) {
@@ -379,8 +379,8 @@ snd_emux_sysex(void *p, unsigned char *buf, int len, int parsed,
         struct snd_emux *emu;
 
         port = p;
-        snd_assert(port != NULL, return);
-        snd_assert(chset != NULL, return);
+        if (snd_BUG_ON(!port || !chset))
+                return;
         emu = port->emu;
 
         switch (parsed) {
diff --git a/sound/synth/emux/emux_oss.c b/sound/synth/emux/emux_oss.c
index f60a98ef7dec..5c47b6c09264 100644
--- a/sound/synth/emux/emux_oss.c
+++ b/sound/synth/emux/emux_oss.c
@@ -114,7 +114,8 @@ snd_emux_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
         char tmpname[64];
 
         emu = closure;
-        snd_assert(arg != NULL && emu != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg || !emu))
+                return -ENXIO;
 
         mutex_lock(&emu->register_mutex);
 
@@ -183,12 +184,15 @@ snd_emux_close_seq_oss(struct snd_seq_oss_arg *arg)
         struct snd_emux *emu;
         struct snd_emux_port *p;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         p = arg->private_data;
-        snd_assert(p != NULL, return -ENXIO);
+        if (snd_BUG_ON(!p))
+                return -ENXIO;
 
         emu = p->emu;
-        snd_assert(emu != NULL, return -ENXIO);
+        if (snd_BUG_ON(!emu))
+                return -ENXIO;
 
         mutex_lock(&emu->register_mutex);
         snd_emux_sounds_off_all(p);
@@ -212,12 +216,15 @@ snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
         struct snd_emux_port *p;
         int rc;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         p = arg->private_data;
-        snd_assert(p != NULL, return -ENXIO);
+        if (snd_BUG_ON(!p))
+                return -ENXIO;
 
         emu = p->emu;
-        snd_assert(emu != NULL, return -ENXIO);
+        if (snd_BUG_ON(!emu))
+                return -ENXIO;
 
         if (format == GUS_PATCH)
                 rc = snd_soundfont_load_guspatch(emu->sflist, buf, count,
@@ -252,12 +259,15 @@ snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned l
         struct snd_emux_port *p;
         struct snd_emux *emu;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         p = arg->private_data;
-        snd_assert(p != NULL, return -ENXIO);
+        if (snd_BUG_ON(!p))
+                return -ENXIO;
 
         emu = p->emu;
-        snd_assert(emu != NULL, return -ENXIO);
+        if (snd_BUG_ON(!emu))
+                return -ENXIO;
 
         switch (cmd) {
         case SNDCTL_SEQ_RESETSAMPLES:
@@ -282,9 +292,11 @@ snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg)
 {
         struct snd_emux_port *p;
 
-        snd_assert(arg != NULL, return -ENXIO);
+        if (snd_BUG_ON(!arg))
+                return -ENXIO;
         p = arg->private_data;
-        snd_assert(p != NULL, return -ENXIO);
+        if (snd_BUG_ON(!p))
+                return -ENXIO;
         snd_emux_reset_port(p);
         return 0;
 }
@@ -302,9 +314,11 @@ snd_emux_event_oss_input(struct snd_seq_event *ev, int direct, void *private_dat
         unsigned char cmd, *data;
 
         p = private_data;
-        snd_assert(p != NULL, return -EINVAL);
+        if (snd_BUG_ON(!p))
+                return -EINVAL;
         emu = p->emu;
-        snd_assert(emu != NULL, return -EINVAL);
+        if (snd_BUG_ON(!emu))
+                return -EINVAL;
         if (ev->type != SNDRV_SEQ_EVENT_OSS)
                 return snd_emux_event_input(ev, direct, private_data, atomic, hop);
 
diff --git a/sound/synth/emux/emux_seq.c b/sound/synth/emux/emux_seq.c
index d176cc01742d..335aa2ce2574 100644
--- a/sound/synth/emux/emux_seq.c
+++ b/sound/synth/emux/emux_seq.c
@@ -257,7 +257,8 @@ snd_emux_event_input(struct snd_seq_event *ev, int direct, void *private_data,
         struct snd_emux_port *port;
 
         port = private_data;
-        snd_assert(port != NULL && ev != NULL, return -EINVAL);
+        if (snd_BUG_ON(!port || !ev))
+                return -EINVAL;
 
         snd_midi_process_event(&emux_ops, ev, &port->chset);
 
@@ -308,9 +309,11 @@ snd_emux_use(void *private_data, struct snd_seq_port_subscribe *info)
         struct snd_emux *emu;
 
         p = private_data;
-        snd_assert(p != NULL, return -EINVAL);
+        if (snd_BUG_ON(!p))
+                return -EINVAL;
         emu = p->emu;
-        snd_assert(emu != NULL, return -EINVAL);
+        if (snd_BUG_ON(!emu))
+                return -EINVAL;
 
         mutex_lock(&emu->register_mutex);
         snd_emux_init_port(p);
@@ -329,9 +332,11 @@ snd_emux_unuse(void *private_data, struct snd_seq_port_subscribe *info)
         struct snd_emux *emu;
 
         p = private_data;
-        snd_assert(p != NULL, return -EINVAL);
+        if (snd_BUG_ON(!p))
+                return -EINVAL;
         emu = p->emu;
-        snd_assert(emu != NULL, return -EINVAL);
+        if (snd_BUG_ON(!emu))
+                return -EINVAL;
 
         mutex_lock(&emu->register_mutex);
         snd_emux_sounds_off_all(p);
diff --git a/sound/synth/emux/emux_synth.c b/sound/synth/emux/emux_synth.c
index b343818dbb96..2cc6f6f79065 100644
--- a/sound/synth/emux/emux_synth.c
+++ b/sound/synth/emux/emux_synth.c
@@ -66,12 +66,12 @@ snd_emux_note_on(void *p, int note, int vel, struct snd_midi_channel *chan)
         struct snd_emux_port *port;
 
         port = p;
-        snd_assert(port != NULL && chan != NULL, return);
+        if (snd_BUG_ON(!port || !chan))
+                return;
 
         emu = port->emu;
-        snd_assert(emu != NULL, return);
-        snd_assert(emu->ops.get_voice != NULL, return);
-        snd_assert(emu->ops.trigger != NULL, return);
+        if (snd_BUG_ON(!emu || !emu->ops.get_voice || !emu->ops.trigger))
+                return;
 
         key = note; /* remember the original note */
         nvoices = get_zone(emu, port, &note, vel, chan, table);
@@ -164,11 +164,12 @@ snd_emux_note_off(void *p, int note, int vel, struct snd_midi_channel *chan)
         struct snd_emux_port *port;
 
         port = p;
-        snd_assert(port != NULL && chan != NULL, return);
+        if (snd_BUG_ON(!port || !chan))
+                return;
 
         emu = port->emu;
-        snd_assert(emu != NULL, return);
-        snd_assert(emu->ops.release != NULL, return);
+        if (snd_BUG_ON(!emu || !emu->ops.release))
+                return;
 
         spin_lock_irqsave(&emu->voice_lock, flags);
         for (ch = 0; ch < emu->max_voices; ch++) {
@@ -242,11 +243,12 @@ snd_emux_key_press(void *p, int note, int vel, struct snd_midi_channel *chan)
         struct snd_emux_port *port;
 
         port = p;
-        snd_assert(port != NULL && chan != NULL, return);
+        if (snd_BUG_ON(!port || !chan))
+                return;
 
         emu = port->emu;
-        snd_assert(emu != NULL, return);
-        snd_assert(emu->ops.update != NULL, return);
+        if (snd_BUG_ON(!emu || !emu->ops.update))
+                return;
 
         spin_lock_irqsave(&emu->voice_lock, flags);
         for (ch = 0; ch < emu->max_voices; ch++) {
@@ -276,8 +278,8 @@ snd_emux_update_channel(struct snd_emux_port *port, struct snd_midi_channel *cha
                 return;
 
         emu = port->emu;
-        snd_assert(emu != NULL, return);
-        snd_assert(emu->ops.update != NULL, return);
+        if (snd_BUG_ON(!emu || !emu->ops.update))
+                return;
 
         spin_lock_irqsave(&emu->voice_lock, flags);
         for (i = 0; i < emu->max_voices; i++) {
@@ -303,8 +305,8 @@ snd_emux_update_port(struct snd_emux_port *port, int update)
                 return;
 
         emu = port->emu;
-        snd_assert(emu != NULL, return);
-        snd_assert(emu->ops.update != NULL, return);
+        if (snd_BUG_ON(!emu || !emu->ops.update))
+                return;
 
         spin_lock_irqsave(&emu->voice_lock, flags);
         for (i = 0; i < emu->max_voices; i++) {
@@ -326,7 +328,8 @@ snd_emux_control(void *p, int type, struct snd_midi_channel *chan)
         struct snd_emux_port *port;
 
         port = p;
-        snd_assert(port != NULL && chan != NULL, return);
+        if (snd_BUG_ON(!port || !chan))
+                return;
 
         switch (type) {
         case MIDI_CTL_MSB_MAIN_VOLUME:
@@ -400,11 +403,12 @@ snd_emux_terminate_note(void *p, int note, struct snd_midi_channel *chan)
         struct snd_emux_port *port;
 
         port = p;
-        snd_assert(port != NULL && chan != NULL, return);
+        if (snd_BUG_ON(!port || !chan))
+                return;
 
         emu = port->emu;
-        snd_assert(emu != NULL, return);
-        snd_assert(emu->ops.terminate != NULL, return);
+        if (snd_BUG_ON(!emu || !emu->ops.terminate))
+                return;
 
         terminate_note1(emu, note, chan, 1);
 }
@@ -451,10 +455,11 @@ snd_emux_sounds_off_all(struct snd_emux_port *port)
         struct snd_emux_voice *vp;
         unsigned long flags;
 
-        snd_assert(port != NULL, return);
+        if (snd_BUG_ON(!port))
+                return;
         emu = port->emu;
-        snd_assert(emu != NULL, return);
-        snd_assert(emu->ops.terminate != NULL, return);
+        if (snd_BUG_ON(!emu || !emu->ops.terminate))
+                return;
 
         spin_lock_irqsave(&emu->voice_lock, flags);
         for (i = 0; i < emu->max_voices; i++) {
diff --git a/sound/synth/util_mem.c b/sound/synth/util_mem.c
index deabe5f899c4..c85522e3808d 100644
--- a/sound/synth/util_mem.c
+++ b/sound/synth/util_mem.c
@@ -55,7 +55,8 @@ void snd_util_memhdr_free(struct snd_util_memhdr *hdr)
 {
         struct list_head *p;
 
-        snd_assert(hdr != NULL, return);
+        if (!hdr)
+                return;
         /* release all blocks */
         while ((p = hdr->block.next) != &hdr->block) {
                 list_del(p);
@@ -74,8 +75,8 @@ __snd_util_mem_alloc(struct snd_util_memhdr *hdr, int size)
         unsigned int units, prev_offset;
         struct list_head *p;
 
-        snd_assert(hdr != NULL, return NULL);
-        snd_assert(size > 0, return NULL);
+        if (snd_BUG_ON(!hdr || size <= 0))
+                return NULL;
 
         /* word alignment */
         units = size;
@@ -161,7 +162,8 @@ __snd_util_mem_free(struct snd_util_memhdr *hdr, struct snd_util_memblk *blk)
  */
 int snd_util_mem_free(struct snd_util_memhdr *hdr, struct snd_util_memblk *blk)
 {
-        snd_assert(hdr && blk, return -EINVAL);
+        if (snd_BUG_ON(!hdr || !blk))
+                return -EINVAL;
 
         mutex_lock(&hdr->block_mutex);
         __snd_util_mem_free(hdr, blk);
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index b8cfb7c22768..c91f18cdc8b5 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -841,7 +841,8 @@ static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *ru
                 return -EBADFD;
 
         for (i = 0; i < subs->nurbs; i++) {
-                snd_assert(subs->dataurb[i].urb, return -EINVAL);
+                if (snd_BUG_ON(!subs->dataurb[i].urb))
+                        return -EINVAL;
                 if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
                         snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
                         goto __error;
@@ -849,7 +850,8 @@ static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *ru
         }
         if (subs->syncpipe) {
                 for (i = 0; i < SYNC_URBS; i++) {
-                        snd_assert(subs->syncurb[i].urb, return -EINVAL);
+                        if (snd_BUG_ON(!subs->syncurb[i].urb))
+                                return -EINVAL;
                         if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
                                 snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
                                 goto __error;
@@ -1321,10 +1323,12 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
         int err;
 
         iface = usb_ifnum_to_if(dev, fmt->iface);
-        snd_assert(iface, return -EINVAL);
+        if (WARN_ON(!iface))
+                return -EINVAL;
         alts = &iface->altsetting[fmt->altset_idx];
         altsd = get_iface_desc(alts);
-        snd_assert(altsd->bAlternateSetting == fmt->altsetting, return -EINVAL);
+        if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting))
+                return -EINVAL;
 
         if (fmt == subs->cur_audiofmt)
                 return 0;
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 5f98bee06959..6621fad8c5f0 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -1389,7 +1389,8 @@ static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl
         struct usb_mixer_elem_info *cval = kcontrol->private_data;
         char **itemlist = (char **)kcontrol->private_value;
 
-        snd_assert(itemlist, return -EINVAL);
+        if (snd_BUG_ON(!itemlist))
+                return -EINVAL;
         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
         uinfo->count = 1;
         uinfo->value.enumerated.items = cval->max;