ALSA: Kill snd_assert() in sound/pci/*

Kill snd_assert() in sound/pci/*, either removed or replaced with
if () with snd_BUG_ON().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c
index 491a4a5..5ff4dbb 100644
--- a/sound/pci/emu10k1/emu10k1x.c
+++ b/sound/pci/emu10k1/emu10k1x.c
@@ -1319,7 +1319,8 @@
 	unsigned long flags;
 	
 	emu = midi->emu;
-	snd_assert(emu, return -ENXIO);
+	if (snd_BUG_ON(!emu))
+		return -ENXIO;
 	spin_lock_irqsave(&midi->open_lock, flags);
 	midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
 	midi->substream_input = substream;
@@ -1345,7 +1346,8 @@
 	unsigned long flags;
 
 	emu = midi->emu;
-	snd_assert(emu, return -ENXIO);
+	if (snd_BUG_ON(!emu))
+		return -ENXIO;
 	spin_lock_irqsave(&midi->open_lock, flags);
 	midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
 	midi->substream_output = substream;
@@ -1372,7 +1374,8 @@
 	int err = 0;
 
 	emu = midi->emu;
-	snd_assert(emu, return -ENXIO);
+	if (snd_BUG_ON(!emu))
+		return -ENXIO;
 	spin_lock_irqsave(&midi->open_lock, flags);
 	snd_emu10k1x_intr_disable(emu, midi->rx_enable);
 	midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
@@ -1394,7 +1397,8 @@
 	int err = 0;
 
 	emu = midi->emu;
-	snd_assert(emu, return -ENXIO);
+	if (snd_BUG_ON(!emu))
+		return -ENXIO;
 	spin_lock_irqsave(&midi->open_lock, flags);
 	snd_emu10k1x_intr_disable(emu, midi->tx_enable);
 	midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
@@ -1413,7 +1417,8 @@
 	struct emu10k1x *emu;
 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
 	emu = midi->emu;
-	snd_assert(emu, return);
+	if (snd_BUG_ON(!emu))
+		return;
 
 	if (up)
 		snd_emu10k1x_intr_enable(emu, midi->rx_enable);
@@ -1428,7 +1433,8 @@
 	unsigned long flags;
 
 	emu = midi->emu;
-	snd_assert(emu, return);
+	if (snd_BUG_ON(!emu))
+		return;
 
 	if (up) {
 		int max = 4;