diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index d08c38906449..8c88401c79bc 100644
--- a/sound/isa/opti9xx/opti92x-ad1848.c
+++ b/sound/isa/opti9xx/opti92x-ad1848.c
@@ -135,6 +135,8 @@ struct snd_opti9xx {
 	unsigned long mc_base_size;
 #ifdef OPTi93X
 	unsigned long mc_indir_index;
+	unsigned long mc_indir_size;
+	struct resource *res_mc_indir;
 	struct snd_wss *codec;
 #endif	/* OPTi93X */
 	unsigned long pwd_reg;
@@ -231,7 +233,10 @@ static int __devinit snd_opti9xx_init(struct snd_opti9xx *chip,
 	case OPTi9XX_HW_82C931:
 	case OPTi9XX_HW_82C933:
 		chip->mc_base = (hardware == OPTi9XX_HW_82C930) ? 0xf8f : 0xf8d;
-		chip->mc_indir_index = 0xe0e;
+		if (!chip->mc_indir_index) {
+			chip->mc_indir_index = 0xe0e;
+			chip->mc_indir_size = 2;
+		}
 		chip->password = 0xe4;
 		chip->pwd_reg = 0;
 		break;
@@ -560,6 +565,48 @@ static irqreturn_t snd_opti93x_interrupt(int irq, void *dev_id)
 
 #endif /* OPTi93X */
 
+static int __devinit snd_opti9xx_read_check(struct snd_opti9xx *chip)
+{
+	unsigned char value;
+#ifdef OPTi93X
+	unsigned long flags;
+#endif
+
+	chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size,
+					   "OPTi9xx MC");
+	if (chip->res_mc_base == NULL)
+		return -EBUSY;
+#ifndef OPTi93X
+	value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(1));
+	if (value != 0xff && value != inb(chip->mc_base + OPTi9XX_MC_REG(1)))
+		if (value == snd_opti9xx_read(chip, OPTi9XX_MC_REG(1)))
+			return 0;
+#else	/* OPTi93X */
+	chip->res_mc_indir = request_region(chip->mc_indir_index,
+					    chip->mc_indir_size,
+					    "OPTi93x MC");
+	if (chip->res_mc_indir == NULL)
+		return -EBUSY;
+
+	spin_lock_irqsave(&chip->lock, flags);
+	outb(chip->password, chip->mc_base + chip->pwd_reg);
+	outb(((chip->mc_indir_index & 0x1f0) >> 4), chip->mc_base);
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(7));
+	snd_opti9xx_write(chip, OPTi9XX_MC_REG(7), 0xff - value);
+	if (snd_opti9xx_read(chip, OPTi9XX_MC_REG(7)) == 0xff - value)
+		return 0;
+
+	release_and_free_resource(chip->res_mc_indir);
+	chip->res_mc_indir = NULL;
+#endif	/* OPTi93X */
+	release_and_free_resource(chip->res_mc_base);
+	chip->res_mc_base = NULL;
+
+	return -ENODEV;
+}
+
 static int __devinit snd_card_opti9xx_detect(struct snd_card *card,
 					     struct snd_opti9xx *chip)
 {
@@ -567,50 +614,20 @@ static int __devinit snd_card_opti9xx_detect(struct snd_card *card,
 
 #ifndef OPTi93X
 	for (i = OPTi9XX_HW_82C928; i < OPTi9XX_HW_82C930; i++) {
-		unsigned char value;
-
-		if ((err = snd_opti9xx_init(chip, i)) < 0)
-			return err;
-
-		if ((chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size, "OPTi9xx MC")) == NULL)
-			continue;
-
-		value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(1));
-		if ((value != 0xff) && (value != inb(chip->mc_base + 1)))
-			if (value == snd_opti9xx_read(chip, OPTi9XX_MC_REG(1)))
-				return 1;
-
-		release_and_free_resource(chip->res_mc_base);
-		chip->res_mc_base = NULL;
-
-	}
-#else	/* OPTi93X */
+#else
 	for (i = OPTi9XX_HW_82C931; i >= OPTi9XX_HW_82C930; i--) {
-		unsigned long flags;
-		unsigned char value;
-
-		if ((err = snd_opti9xx_init(chip, i)) < 0)
+#endif
+		err = snd_opti9xx_init(chip, i);
+		if (err < 0)
 			return err;
 
-		if ((chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size, "OPTi9xx MC")) == NULL)
-			continue;
-
-		spin_lock_irqsave(&chip->lock, flags);
-		outb(chip->password, chip->mc_base + chip->pwd_reg);
-		outb(((chip->mc_indir_index & (1 << 8)) >> 4) |
-			((chip->mc_indir_index & 0xf0) >> 4), chip->mc_base);
-		spin_unlock_irqrestore(&chip->lock, flags);
-
-		value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(7));
-		snd_opti9xx_write(chip, OPTi9XX_MC_REG(7), 0xff - value);
-		if (snd_opti9xx_read(chip, OPTi9XX_MC_REG(7)) == 0xff - value)
+		err = snd_opti9xx_read_check(chip);
+		if (err == 0)
 			return 1;
-
-		release_and_free_resource(chip->res_mc_base);
-		chip->res_mc_base = NULL;
+#ifdef OPTi93X
+		chip->mc_indir_index = 0;
+#endif
 	}
-#endif	/* OPTi93X */
-
 	return -ENODEV;
 }
 
@@ -639,6 +656,8 @@ static int __devinit snd_card_opti9xx_pnp(struct snd_opti9xx *chip,
 #ifdef OPTi93X
 	port = pnp_port_start(pdev, 0) - 4;
 	fm_port = pnp_port_start(pdev, 1) + 8;
+	chip->mc_indir_index = pnp_port_start(pdev, 3) + 2;
+	chip->mc_indir_size = pnp_port_len(pdev, 3) - 2;
 #else
 	if (pid->driver_data != 0x0924)
 		port = pnp_port_start(pdev, 1);
@@ -669,7 +688,7 @@ static int __devinit snd_card_opti9xx_pnp(struct snd_opti9xx *chip,
 static void snd_card_opti9xx_free(struct snd_card *card)
 {
 	struct snd_opti9xx *chip = card->private_data;
-        
+
 	if (chip) {
 #ifdef OPTi93X
 		struct snd_wss *codec = chip->codec;
@@ -677,6 +696,7 @@ static void snd_card_opti9xx_free(struct snd_card *card)
 			disable_irq(codec->irq);
 			free_irq(codec->irq, codec);
 		}
+		release_and_free_resource(chip->res_mc_indir);
 #endif
 		release_and_free_resource(chip->res_mc_base);
 	}
@@ -696,11 +716,6 @@ static int __devinit snd_opti9xx_probe(struct snd_card *card)
 	struct snd_rawmidi *rmidi;
 	struct snd_hwdep *synth;
 
-	if (! chip->res_mc_base &&
-	    (chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size,
-						"OPTi9xx MC")) == NULL)
-		return -ENOMEM;
-
 #if defined(CS4231) || defined(OPTi93X)
 	xdma2 = dma2;
 #else
@@ -954,6 +969,13 @@ static int __devinit snd_opti9xx_pnp_probe(struct pnp_card_link *pcard,
 	}
 	if (hw <= OPTi9XX_HW_82C930)
 		chip->mc_base -= 0x80;
+
+	error = snd_opti9xx_read_check(chip);
+	if (error) {
+		snd_printk(KERN_ERR "OPTI chip not found\n");
+		snd_card_free(card);
+		return error;
+	}
 	snd_card_set_dev(card, &pcard->card->dev);
 	if ((error = snd_opti9xx_probe(card)) < 0) {
 		snd_card_free(card);