ALSA: asihpi - Remove spurious adapter index check

Subsystem requests don't have or need a valid adapter index.
The adapter index is already checked further on, before it is used to index
the adapters array. (Reverts 4a122c10)
Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/asihpi/hpioctl.c

 /*******************************************************************************
 
     AudioScience HPI driver
-    Copyright (C) 1997-2010  AudioScience Inc. <support@audioscience.com>
+    Copyright (C) 1997-2011  AudioScience Inc. <support@audioscience.com>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of version 2 of the GNU General Public License as
@@ -157,11 +157,6 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		goto out;
 	}
 
-	if (hm->h.adapter_index >= HPI_MAX_ADAPTERS) {
-		err = -EINVAL;
-		goto out;
-	}
-
 	switch (hm->h.function) {
 	case HPI_SUBSYS_CREATE_ADAPTER:
 	case HPI_ADAPTER_DELETE:
@@ -187,7 +182,6 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		/* -1=no data 0=read from user mem, 1=write to user mem */
 		int wrflag = -1;
 		u32 adapter = hm->h.adapter_index;
-		pa = &adapters[adapter];
 
 		if ((adapter > HPI_MAX_ADAPTERS) || (!pa->type)) {
 			hpi_init_response(&hr->r0, HPI_OBJ_ADAPTER,
@@ -203,6 +197,8 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 			goto out;
 		}
 
+		pa = &adapters[adapter];
+
 		if (mutex_lock_interruptible(&adapters[adapter].mutex)) {
 			err = -EINTR;
 			goto out;