ALSA: emu10k1: Remove always NULL parameters

The various PCM and hwdep allocation functions in this driver take a pointer
to a pointer of a PCM/hwdep where if this parameter is provided the newly
allocated object is stored. All callers pass NULL though, so remove the
parameter.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/emu10k1/p16v.c b/sound/pci/emu10k1/p16v.c
index 7ef3898..b672755 100644
--- a/sound/pci/emu10k1/p16v.c
+++ b/sound/pci/emu10k1/p16v.c
@@ -640,7 +640,7 @@
 	return 0;
 }
 
-int snd_p16v_pcm(struct snd_emu10k1 *emu, int device, struct snd_pcm **rpcm)
+int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
 {
 	struct snd_pcm *pcm;
 	struct snd_pcm_substream *substream;
@@ -649,8 +649,6 @@
   
 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
 	emu->p16v_device_offset = device;
-	if (rpcm)
-		*rpcm = NULL;
 
 	if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
 		return err;
@@ -694,9 +692,6 @@
 		*/
 	}
   
-	if (rpcm)
-		*rpcm = pcm;
-  
 	return 0;
 }