1 files changed, 67 insertions, 45 deletions

diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index d622d2906862..106be6e471f7 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;
@@ -560,57 +565,69 @@ static irqreturn_t snd_opti93x_interrupt(int irq, void *dev_id)
 
 #endif /* OPTi93X */
 
-static int __devinit snd_card_opti9xx_detect(struct snd_card *card,
-                                             struct snd_opti9xx *chip)
+static int __devinit snd_opti9xx_read_check(struct snd_opti9xx *chip)
 {
-        int i, err;
+        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
-        for (i = OPTi9XX_HW_82C928; i < OPTi9XX_HW_82C930; i++) {
-                unsigned char value;
+        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;
 
-                if ((err = snd_opti9xx_init(chip, i)) < 0)
-                        return err;
+        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);
 
-                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(7));
+        snd_opti9xx_write(chip, OPTi9XX_MC_REG(7), 0xff - value);
+        if (snd_opti9xx_read(chip, OPTi9XX_MC_REG(7)) == 0xff - value)
+                return 0;
 
-                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_indir);
+        chip->res_mc_indir = NULL;
+#endif  /* OPTi93X */
+        release_and_free_resource(chip->res_mc_base);
+        chip->res_mc_base = NULL;
 
-                release_and_free_resource(chip->res_mc_base);
-                chip->res_mc_base = NULL;
+        return -ENODEV;
+}
 
-        }
-#else   /* OPTi93X */
-        for (i = OPTi9XX_HW_82C931; i >= OPTi9XX_HW_82C930; i--) {
-                unsigned long flags;
-                unsigned char value;
+static int __devinit snd_card_opti9xx_detect(struct snd_card *card,
+                                             struct snd_opti9xx *chip)
+{
+        int i, err;
 
-                if ((err = snd_opti9xx_init(chip, i)) < 0)
+#ifndef OPTi93X
+        for (i = OPTi9XX_HW_82C928; i < OPTi9XX_HW_82C930; i++) {
+#else
+        for (i = OPTi9XX_HW_82C931; i >= OPTi9XX_HW_82C930; i--) {
+#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);