[ALSA] unregister platform devices

Call platform_device_unregister() for all platform devices that we've
registered.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

17 files changed, 348 insertions, 95 deletions

diff --git a/sound/isa/ad1848/ad1848.c b/sound/isa/ad1848/ad1848.c
index 1019e9f..e091bbe 100644
--- a/sound/isa/ad1848/ad1848.c
+++ b/sound/isa/ad1848/ad1848.c
@@ -62,6 +62,8 @@ MODULE_PARM_DESC(dma1, "DMA1 # for AD1848 driver.");
 module_param_array(thinkpad, bool, NULL, 0444);
 MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 
 static int __init snd_ad1848_probe(struct platform_device *pdev)
 {
@@ -167,6 +169,15 @@ static struct platform_driver snd_ad1848_driver = {
 	},
 };
 
+static void __init_or_module snd_ad1848_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_ad1848_driver);
+}
+
 static int __init alsa_card_ad1848_init(void)
 {
 	int i, cards, err;
@@ -184,6 +195,7 @@ static int __init alsa_card_ad1848_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -196,13 +208,13 @@ static int __init alsa_card_ad1848_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_ad1848_driver);
+	snd_ad1848_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_ad1848_exit(void)
 {
-	platform_driver_unregister(&snd_ad1848_driver);
+	snd_ad1848_unregister_all();
 }
 
 module_init(alsa_card_ad1848_init)
diff --git a/sound/isa/cmi8330.c b/sound/isa/cmi8330.c
index ba0114e..bd8e238 100644
--- a/sound/isa/cmi8330.c
+++ b/sound/isa/cmi8330.c
@@ -108,6 +108,9 @@ MODULE_PARM_DESC(wssirq, "IRQ # for CMI8330 WSS driver.");
 module_param_array(wssdma, int, NULL, 0444);
 MODULE_PARM_DESC(wssdma, "DMA for CMI8330 WSS driver.");
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
+static int pnp_registered;
+
 #define CMI8330_RMUX3D    16
 #define CMI8330_MUTEMUX   17
 #define CMI8330_OUTPUTVOL 18
@@ -665,6 +668,17 @@ static struct pnp_card_driver cmi8330_pnpc_driver = {
 };
 #endif /* CONFIG_PNP */
 
+static void __init_or_module snd_cmi8330_unregister_all(void)
+{
+	int i;
+
+	if (pnp_registered)
+		pnp_unregister_card_driver(&cmi8330_pnpc_driver);
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&snd_cmi8330_driver);
+}
+
 static int __init alsa_card_cmi8330_init(void)
 {
 	int i, err, cards = 0;
@@ -680,31 +694,35 @@ static int __init alsa_card_cmi8330_init(void)
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
 			err = PTR_ERR(device);
-			platform_driver_unregister(&snd_cmi8330_driver);
-			return err;
+			goto errout;
 		}
+		platform_devices[i] = device;
 		cards++;
 	}
 
 	err = pnp_register_card_driver(&cmi8330_pnpc_driver);
-	if (err > 0)
+	if (err >= 0) {
+		pnp_registered = 1;
 		cards += err;
+	}
 
 	if (!cards) {
-		pnp_unregister_card_driver(&cmi8330_pnpc_driver);
-		platform_driver_unregister(&snd_cmi8330_driver);
 #ifdef MODULE
 		snd_printk(KERN_ERR "CMI8330 not found or device busy\n");
 #endif
-		return -ENODEV;
+		err = -ENODEV;
+		goto errout;
 	}
 	return 0;
+
+ errout:
+	snd_cmi8330_unregister_all();
+	return err;
 }
 
 static void __exit alsa_card_cmi8330_exit(void)
 {
-	pnp_unregister_card_driver(&cmi8330_pnpc_driver);
-	platform_driver_unregister(&snd_cmi8330_driver);
+	snd_cmi8330_unregister_all();
 }
 
 module_init(alsa_card_cmi8330_init)
diff --git a/sound/isa/cs423x/cs4231.c b/sound/isa/cs423x/cs4231.c
index b5252a5..ab67b5c 100644
--- a/sound/isa/cs423x/cs4231.c
+++ b/sound/isa/cs423x/cs4231.c
@@ -66,6 +66,8 @@ MODULE_PARM_DESC(dma1, "DMA1 # for CS4231 driver.");
 module_param_array(dma2, int, NULL, 0444);
 MODULE_PARM_DESC(dma2, "DMA2 # for CS4231 driver.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 
 static int __init snd_cs4231_probe(struct platform_device *pdev)
 {
@@ -183,6 +185,15 @@ static struct platform_driver snd_cs4231_driver = {
 	},
 };
 
+static void __init_or_module snd_cs4231_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_cs4231_driver);
+}
+
 static int __init alsa_card_cs4231_init(void)
 {
 	int i, cards, err;
@@ -200,6 +211,7 @@ static int __init alsa_card_cs4231_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -212,13 +224,13 @@ static int __init alsa_card_cs4231_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_cs4231_driver);
+	snd_cs4231_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_cs4231_exit(void)
 {
-	platform_driver_unregister(&snd_cs4231_driver);
+	snd_cs4231_unregister_all();
 }
 
 module_init(alsa_card_cs4231_init)
diff --git a/sound/isa/cs423x/cs4236.c b/sound/isa/cs423x/cs4236.c
index 9e399b6..e168333 100644
--- a/sound/isa/cs423x/cs4236.c
+++ b/sound/isa/cs423x/cs4236.c
@@ -124,6 +124,12 @@ MODULE_PARM_DESC(dma1, "DMA1 # for " IDENT " driver.");
 module_param_array(dma2, int, NULL, 0444);
 MODULE_PARM_DESC(dma2, "DMA2 # for " IDENT " driver.");
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
+static int pnpc_registered;
+#ifdef CS4232
+static int pnp_registered;
+#endif
+
 struct snd_card_cs4236 {
 	struct snd_cs4231 *chip;
 	struct resource *res_sb_port;
@@ -737,6 +743,21 @@ static struct pnp_card_driver cs423x_pnpc_driver = {
 };
 #endif /* CONFIG_PNP */
 
+static void __init_or_module snd_cs423x_unregister_all(void)
+{
+	int i;
+
+	if (pnpc_registered)
+		pnp_unregister_card_driver(&cs423x_pnpc_driver);
+#ifdef CS4232
+	if (pnp_registered)
+		pnp_unregister_driver(&cs4232_pnp_driver);
+#endif
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&cs423x_nonpnp_driver);
+}
+
 static int __init alsa_card_cs423x_init(void)
 {
 	int i, err, cards = 0;
@@ -752,40 +773,40 @@ static int __init alsa_card_cs423x_init(void)
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
 			err = PTR_ERR(device);
-			platform_driver_unregister(&cs423x_nonpnp_driver);
-			return err;
+			goto errout;
 		}
+		platform_devices[i] = device;
 		cards++;
 	}
 #ifdef CS4232
 	i = pnp_register_driver(&cs4232_pnp_driver);
-	if (i > 0)
+	if (i >= 0) {
+		pnp_registered = 1;
 		cards += i;
+	}
 #endif
 	i = pnp_register_card_driver(&cs423x_pnpc_driver);
-	if (i > 0)
+	if (i >= 0) {
+		pnpc_registered = 1;
 		cards += i;
+	}
 	if (!cards) {
-#ifdef CS4232
-		pnp_unregister_driver(&cs4232_pnp_driver);
-#endif
-		pnp_unregister_card_driver(&cs423x_pnpc_driver);
-		platform_driver_unregister(&cs423x_nonpnp_driver);
 #ifdef MODULE
 		printk(KERN_ERR IDENT " soundcard not found or device busy\n");
 #endif
-		return -ENODEV;
+		err = -ENODEV;
+		goto errout;
 	}
 	return 0;
+
+ errout:
+	snd_cs423x_unregister_all();
+	return err;
 }
 
 static void __exit alsa_card_cs423x_exit(void)
 {
-#ifdef CS4232
-	pnp_unregister_driver(&cs4232_pnp_driver);
-#endif
-	pnp_unregister_card_driver(&cs423x_pnpc_driver);
-	platform_driver_unregister(&cs423x_nonpnp_driver);
+	snd_cs423x_unregister_all();
 }
 
 module_init(alsa_card_cs423x_init)
diff --git a/sound/isa/es1688/es1688.c b/sound/isa/es1688/es1688.c
index 68bd40a..50d23cf 100644
--- a/sound/isa/es1688/es1688.c
+++ b/sound/isa/es1688/es1688.c
@@ -69,6 +69,8 @@ MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for ESx688 driver.");
 module_param_array(dma8, int, NULL, 0444);
 MODULE_PARM_DESC(dma8, "8-bit DMA # for ESx688 driver.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 #define PFX	"es1688: "
 
 static int __init snd_es1688_probe(struct platform_device *pdev)
@@ -187,6 +189,15 @@ static struct platform_driver snd_es1688_driver = {
 	},
 };
 
+static void __init_or_module snd_es1688_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_es1688_driver);
+}
+
 static int __init alsa_card_es1688_init(void)
 {
 	int i, cards, err;
@@ -204,6 +215,7 @@ static int __init alsa_card_es1688_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -216,13 +228,13 @@ static int __init alsa_card_es1688_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_es1688_driver);
+	snd_es1688_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_es1688_exit(void)
 {
-	platform_driver_unregister(&snd_es1688_driver);
+	snd_es1688_unregister_all();
 }
 
 module_init(alsa_card_es1688_init)
diff --git a/sound/isa/es18xx.c b/sound/isa/es18xx.c
index 34d4713..bf5de07 100644
--- a/sound/isa/es18xx.c
+++ b/sound/isa/es18xx.c
@@ -1877,6 +1877,9 @@ MODULE_PARM_DESC(dma1, "DMA 1 # for ES18xx driver.");
 module_param_array(dma2, int, NULL, 0444);
 MODULE_PARM_DESC(dma2, "DMA 2 # for ES18xx driver.");
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
+static int pnp_registered;
+
 #ifdef CONFIG_PNP
 
 static struct pnp_card_device_id snd_audiodrive_pnpids[] = {
@@ -2202,6 +2205,17 @@ static struct pnp_card_driver es18xx_pnpc_driver = {
 };
 #endif /* CONFIG_PNP */
 
+static void __init_or_module snd_es18xx_unregister_all(void)
+{
+	int i;
+
+	if (pnp_registered)
+		pnp_unregister_card_driver(&es18xx_pnpc_driver);
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&snd_es18xx_nonpnp_driver);
+}
+
 static int __init alsa_card_es18xx_init(void)
 {
 	int i, err, cards = 0;
@@ -2217,31 +2231,35 @@ static int __init alsa_card_es18xx_init(void)
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
 			err = PTR_ERR(device);
-			platform_driver_unregister(&snd_es18xx_nonpnp_driver);
-			return err;
+			goto errout;
 		}
+		platform_devices[i] = device;
 		cards++;
 	}
 
 	i = pnp_register_card_driver(&es18xx_pnpc_driver);
-	if (i > 0)
+	if (i >= 0) {
+		pnp_registered = 1;
 		cards += i;
+	}
 
 	if(!cards) {
-		pnp_unregister_card_driver(&es18xx_pnpc_driver);
-		platform_driver_unregister(&snd_es18xx_nonpnp_driver);
 #ifdef MODULE
 		snd_printk(KERN_ERR "ESS AudioDrive ES18xx soundcard not found or device busy\n");
 #endif
-		return -ENODEV;
+		err = -ENODEV;
+		goto errout;
 	}
 	return 0;
+
+ errout:
+	snd_es18xx_unregister_all();
+	return err;
 }
 
 static void __exit alsa_card_es18xx_exit(void)
 {
-	pnp_unregister_card_driver(&es18xx_pnpc_driver);
-	platform_driver_unregister(&snd_es18xx_nonpnp_driver);
+	snd_es18xx_unregister_all();
 }
 
 module_init(alsa_card_es18xx_init)
diff --git a/sound/isa/gus/gusclassic.c b/sound/isa/gus/gusclassic.c
index 57beb74..d1165b9 100644
--- a/sound/isa/gus/gusclassic.c
+++ b/sound/isa/gus/gusclassic.c
@@ -71,6 +71,8 @@ MODULE_PARM_DESC(channels, "GF1 channels for GUS Classic driver.");
 module_param_array(pcm_channels, int, NULL, 0444);
 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Classic driver.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 
 #define PFX	"gusclassic: "
 
@@ -227,6 +229,15 @@ static struct platform_driver snd_gusclassic_driver = {
 	},
 };
 
+static void __init_or_module snd_gusclassic_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_gusclassic_driver);
+}
+
 static int __init alsa_card_gusclassic_init(void)
 {
 	int i, cards, err;
@@ -244,6 +255,7 @@ static int __init alsa_card_gusclassic_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -256,13 +268,13 @@ static int __init alsa_card_gusclassic_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_gusclassic_driver);
+	snd_gusclassic_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_gusclassic_exit(void)
 {
-	platform_driver_unregister(&snd_gusclassic_driver);
+	snd_gusclassic_unregister_all();
 }
 
 module_init(alsa_card_gusclassic_init)
diff --git a/sound/isa/gus/gusextreme.c b/sound/isa/gus/gusextreme.c
index 6fad973..239f16e 100644
--- a/sound/isa/gus/gusextreme.c
+++ b/sound/isa/gus/gusextreme.c
@@ -87,6 +87,8 @@ MODULE_PARM_DESC(channels, "GF1 channels for GUS Extreme driver.");
 module_param_array(pcm_channels, int, NULL, 0444);
 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Extreme driver.");
 
+struct platform_device *devices[SNDRV_CARDS];
+
 
 #define PFX	"gusextreme: "
 
@@ -337,6 +339,15 @@ static struct platform_driver snd_gusextreme_driver = {
 	},
 };
 
+static void __init_or_module snd_gusextreme_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_gusextreme_driver);
+}
+
 static int __init alsa_card_gusextreme_init(void)
 {
 	int i, cards, err;
@@ -354,6 +365,7 @@ static int __init alsa_card_gusextreme_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -366,13 +378,13 @@ static int __init alsa_card_gusextreme_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_gusextreme_driver);
+	snd_gusextreme_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_gusextreme_exit(void)
 {
-	platform_driver_unregister(&snd_gusextreme_driver);
+	snd_gusextreme_unregister_all();
 }
 
 module_init(alsa_card_gusextreme_init)
diff --git a/sound/isa/gus/gusmax.c b/sound/isa/gus/gusmax.c
index d1b70ee..d4d2b2a 100644
--- a/sound/isa/gus/gusmax.c
+++ b/sound/isa/gus/gusmax.c
@@ -72,6 +72,8 @@ MODULE_PARM_DESC(channels, "Used GF1 channels for GUS MAX driver.");
 module_param_array(pcm_channels, int, NULL, 0444);
 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS MAX driver.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 struct snd_gusmax {
 	int irq;
 	struct snd_card *card;
@@ -364,6 +366,15 @@ static struct platform_driver snd_gusmax_driver = {
 	},
 };
 
+static void __init_or_module snd_gusmax_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_gusmax_driver);
+}
+
 static int __init alsa_card_gusmax_init(void)
 {
 	int i, cards, err;
@@ -381,6 +392,7 @@ static int __init alsa_card_gusmax_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -393,13 +405,13 @@ static int __init alsa_card_gusmax_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_gusmax_driver);
+	snd_gusmax_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_gusmax_exit(void)
 {
-	platform_driver_unregister(&snd_gusmax_driver);
+	snd_gusmax_unregister_all();
 }
 
 module_init(alsa_card_gusmax_init)
diff --git a/sound/isa/gus/interwave.c b/sound/isa/gus/interwave.c
index 67a5f74..9838d99 100644
--- a/sound/isa/gus/interwave.c
+++ b/sound/isa/gus/interwave.c
@@ -115,6 +115,9 @@ MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for InterWave driver.");
 module_param_array(effect, int, NULL, 0444);
 MODULE_PARM_DESC(effect, "Effects enable for InterWave driver.");
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
+static int pnp_registered;
+
 struct snd_interwave {
 	int irq;
 	struct snd_card *card;
@@ -914,6 +917,17 @@ static struct pnp_card_driver interwave_pnpc_driver = {
 
 #endif /* CONFIG_PNP */
 
+static void __init_or_module snd_interwave_unregister_all(void)
+{
+	int i;
+
+	if (pnp_registered)
+		pnp_unregister_card_driver(&interwave_pnpc_driver);
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&snd_interwave_driver);
+}
+
 static int __init alsa_card_interwave_init(void)
 {
 	int i, err, cards = 0;
@@ -931,32 +945,36 @@ static int __init alsa_card_interwave_init(void)
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
 			err = PTR_ERR(device);
-			platform_driver_unregister(&snd_interwave_driver);
-			return err;
+			goto errout;
 		}
+		platform_devices[i] = device;
 		cards++;
 	}
 
 	/* ISA PnP cards */
 	i = pnp_register_card_driver(&interwave_pnpc_driver);
-	if (i > 0)
+	if (i >= 0) {
+		pnp_registered = 1;
 		cards += i;
+	}
 
 	if (!cards) {
-		pnp_unregister_card_driver(&interwave_pnpc_driver);
-		platform_driver_unregister(&snd_interwave_driver);
 #ifdef MODULE
 		printk(KERN_ERR "InterWave soundcard not found or device busy\n");
 #endif
-		return -ENODEV;
+		err = -ENODEV;
+		goto errout;
 	}
 	return 0;
+
+ errout:
+	snd_interwave_unregister_all();
+	return err;
 }
 
 static void __exit alsa_card_interwave_exit(void)
 {
-	pnp_unregister_card_driver(&interwave_pnpc_driver);
-	platform_driver_unregister(&snd_interwave_driver);
+	snd_interwave_unregister_all();
 }
 
 module_init(alsa_card_interwave_init)
diff --git a/sound/isa/opl3sa2.c b/sound/isa/opl3sa2.c
index aafe556..ca359e0 100644
--- a/sound/isa/opl3sa2.c
+++ b/sound/isa/opl3sa2.c
@@ -90,6 +90,10 @@ MODULE_PARM_DESC(dma2, "DMA2 # for OPL3-SA driver.");
 module_param_array(opl3sa3_ymode, int, NULL, 0444);
 MODULE_PARM_DESC(opl3sa3_ymode, "Speaker size selection for 3D Enhancement mode: Desktop/Large Notebook/Small Notebook/HiFi.");
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
+static int pnp_registered;
+static int pnpc_registered;
+
 /* control ports */
 #define OPL3SA2_PM_CTRL		0x01
 #define OPL3SA2_SYS_CTRL		0x02
@@ -921,6 +925,19 @@ static struct platform_driver snd_opl3sa2_nonpnp_driver = {
 	},
 };
 
+static void __init_or_module snd_opl3sa2_unregister_all(void)
+{
+	int i;
+
+	if (pnpc_registered)
+		pnp_unregister_card_driver(&opl3sa2_pnpc_driver);
+	if (pnp_registered)
+		pnp_unregister_driver(&opl3sa2_pnp_driver);
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&snd_opl3sa2_nonpnp_driver);
+}
+
 static int __init alsa_card_opl3sa2_init(void)
 {
 	int i, err, cards = 0;
@@ -938,36 +955,40 @@ static int __init alsa_card_opl3sa2_init(void)
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
 			err = PTR_ERR(device);
-			platform_driver_unregister(&snd_opl3sa2_nonpnp_driver);
-			return err;
+			goto errout;
 		}
+		platform_devices[i] = device;
 		cards++;
 	}
 
 	err = pnp_register_driver(&opl3sa2_pnp_driver);
-	if (err > 0)
+	if (err >= 0) {
+		pnp_registered = 1;
 		cards += err;
+	}
 	err = pnp_register_card_driver(&opl3sa2_pnpc_driver);
-	if (err > 0)
+	if (err >= 0) {
+		pnpc_registered = 1;
 		cards += err;
+	}
 
 	if (!cards) {
 #ifdef MODULE
 		snd_printk(KERN_ERR "Yamaha OPL3-SA soundcard not found or device busy\n");
 #endif
-		pnp_unregister_card_driver(&opl3sa2_pnpc_driver);
-		pnp_unregister_driver(&opl3sa2_pnp_driver);
-		platform_driver_unregister(&snd_opl3sa2_nonpnp_driver);
-		return -ENODEV;
+		err = -ENODEV;
+		goto errout;
 	}
 	return 0;
+
+ errout:
+	snd_opl3sa2_unregister_all();
+	return err;
 }
 
 static void __exit alsa_card_opl3sa2_exit(void)
 {
-	pnp_unregister_card_driver(&opl3sa2_pnpc_driver);
-	pnp_unregister_driver(&opl3sa2_pnp_driver);
-	platform_driver_unregister(&snd_opl3sa2_nonpnp_driver);
+	snd_opl3sa2_unregister_all();
 }
 
 module_init(alsa_card_opl3sa2_init)
diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index 39211e5..1ea3944 100644
--- a/sound/isa/opti9xx/opti92x-ad1848.c
+++ b/sound/isa/opti9xx/opti92x-ad1848.c
@@ -259,6 +259,7 @@ struct snd_opti9xx {
 };
 
 static int snd_opti9xx_pnp_is_probed;
+static struct platform_device *snd_opti9xx_platform_device;
 
 #ifdef CONFIG_PNP
 
@@ -2095,8 +2096,10 @@ static int __init alsa_card_opti9xx_init(void)
 		if (error < 0)
 			return error;
 		device = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0);
-		if (! IS_ERR(device))
+		if (!IS_ERR(device)) {
+			snd_opti9xx_platform_device = device;
 			return 0;
+		}
 		platform_driver_unregister(&snd_opti9xx_driver);
 	}
 	pnp_unregister_card_driver(&opti9xx_pnpc_driver);
@@ -2108,8 +2111,10 @@ static int __init alsa_card_opti9xx_init(void)
 
 static void __exit alsa_card_opti9xx_exit(void)
 {
-	if (! snd_opti9xx_pnp_is_probed)
+	if (!snd_opti9xx_pnp_is_probed) {
+		platform_device_unregister(snd_opti9xx_platform_device);
 		platform_driver_unregister(&snd_opti9xx_driver);
+	}
 	pnp_unregister_card_driver(&opti9xx_pnpc_driver);
 }
 
diff --git a/sound/isa/sb/sb16.c b/sound/isa/sb/sb16.c
index 05816c5..c0be7a5 100644
--- a/sound/isa/sb/sb16.c
+++ b/sound/isa/sb/sb16.c
@@ -128,6 +128,11 @@ module_param_array(seq_ports, int, NULL, 0444);
 MODULE_PARM_DESC(seq_ports, "Number of sequencer ports for WaveTable synth.");
 #endif
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
+#ifdef CONFIG_PNP
+static int pnp_registered;
+#endif
+
 struct snd_card_sb16 {
 	struct resource *fm_res;	/* used to block FM i/o region for legacy cards */
 	struct snd_sb *chip;
@@ -687,6 +692,19 @@ static struct pnp_card_driver sb16_pnpc_driver = {
 
 #endif /* CONFIG_PNP */
 
+static void __init_or_module snd_sb16_unregister_all(void)
+{
+	int i;
+
+#ifdef CONFIG_PNP
+	if (pnp_registered)
+		pnp_unregister_card_driver(&sb16_pnpc_driver);
+#endif
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&snd_sb16_nonpnp_driver);
+}
+
 static int __init alsa_card_sb16_init(void)
 {
 	int i, err, cards = 0;
@@ -702,23 +720,21 @@ static int __init alsa_card_sb16_init(void)
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
 			err = PTR_ERR(device);
-			platform_driver_unregister(&snd_sb16_nonpnp_driver);
-			return err;
+			goto errout;
 		}
+		platform_devices[i] = device;
 		cards++;
 	}
 #ifdef CONFIG_PNP
 	/* PnP cards at last */
 	i = pnp_register_card_driver(&sb16_pnpc_driver);
-	if (i > 0)
+	if (i >= 0) {
+		pnp_registered = 1;
 		cards += i;
+	}
 #endif
 
 	if (!cards) {
-#ifdef CONFIG_PNP
-		pnp_unregister_card_driver(&sb16_pnpc_driver);
-#endif
-		platform_driver_unregister(&snd_sb16_nonpnp_driver);
 #ifdef MODULE
 		snd_printk(KERN_ERR "Sound Blaster 16 soundcard not found or device busy\n");
 #ifdef SNDRV_SBAWE_EMU8000
@@ -727,17 +743,19 @@ static int __init alsa_card_sb16_init(void)
 		snd_printk(KERN_ERR "In case, if you have AWE card, try snd-sbawe module\n");
 #endif
 #endif
-		return -ENODEV;
+		err = -ENODEV;
+		goto errout;
 	}
 	return 0;
+
+ errout:
+	snd_sb16_unregister_all();
+	return err;
 }
 
 static void __exit alsa_card_sb16_exit(void)
 {
-#ifdef CONFIG_PNP
-	pnp_unregister_card_driver(&sb16_pnpc_driver);
-#endif
-	platform_driver_unregister(&snd_sb16_nonpnp_driver);
+	snd_sb16_unregister_all();
 }
 
 module_init(alsa_card_sb16_init)
diff --git a/sound/isa/sb/sb8.c b/sound/isa/sb/sb8.c
index 0a3d55d..60ee79c 100644
--- a/sound/isa/sb/sb8.c
+++ b/sound/isa/sb/sb8.c
@@ -56,6 +56,8 @@ MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
 module_param_array(dma8, int, NULL, 0444);
 MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 struct snd_sb8 {
 	struct resource *fm_res;	/* used to block FM i/o region for legacy cards */
 	struct snd_sb *chip;
@@ -238,6 +240,15 @@ static struct platform_driver snd_sb8_driver = {
 	},
 };
 
+static void __init_or_module snd_sb8_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_sb8_driver);
+}
+
 static int __init alsa_card_sb8_init(void)
 {
 	int i, cards, err;
@@ -255,6 +266,7 @@ static int __init alsa_card_sb8_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -267,13 +279,13 @@ static int __init alsa_card_sb8_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_sb8_driver);
+	snd_sb8_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_sb8_exit(void)
 {
-	platform_driver_unregister(&snd_sb8_driver);
+	snd_sb8_unregister_all();
 }
 
 module_init(alsa_card_sb8_init)
diff --git a/sound/isa/sgalaxy.c b/sound/isa/sgalaxy.c
index 2e1d467..0dbbb35 100644
--- a/sound/isa/sgalaxy.c
+++ b/sound/isa/sgalaxy.c
@@ -64,6 +64,8 @@ MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
 module_param_array(dma1, int, NULL, 0444);
 MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 #define SGALAXY_AUXC_LEFT 18
 #define SGALAXY_AUXC_RIGHT 19
 
@@ -340,6 +342,15 @@ static struct platform_driver snd_sgalaxy_driver = {
 	},
 };
 
+static void __init_or_module snd_sgalaxy_unregister_all(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(devices); ++i)
+		platform_device_unregister(devices[i]);
+	platform_driver_unregister(&snd_sgalaxy_driver);
+}
+
 static int __init alsa_card_sgalaxy_init(void)
 {
 	int i, cards, err;
@@ -357,6 +368,7 @@ static int __init alsa_card_sgalaxy_init(void)
 			err = PTR_ERR(device);
 			goto errout;
 		}
+		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
@@ -369,13 +381,13 @@ static int __init alsa_card_sgalaxy_init(void)
 	return 0;
 
  errout:
-	platform_driver_unregister(&snd_sgalaxy_driver);
+	snd_sgalaxy_unregister_all();
 	return err;
 }
 
 static void __exit alsa_card_sgalaxy_exit(void)
 {
-	platform_driver_unregister(&snd_sgalaxy_driver);
+	snd_sgalaxy_unregister_all();
 }
 
 module_init(alsa_card_sgalaxy_init)
diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c
index 6271efe..5fb981c 100644
--- a/sound/isa/sscape.c
+++ b/sound/isa/sscape.c
@@ -67,6 +67,9 @@ MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver.");
 
 module_param_array(dma, int, NULL, 0444);
 MODULE_PARM_DESC(dma, "DMA # for SoundScape driver.");
+
+static struct platform_device *platform_devices[SNDRV_CARDS];
+static int pnp_registered;
   
 #ifdef CONFIG_PNP
 static struct pnp_card_device_id sscape_pnpids[] = {
@@ -1384,6 +1387,17 @@ static struct pnp_card_driver sscape_pnpc_driver = {
 
 #endif /* CONFIG_PNP */
 
+static void __init_or_module sscape_unregister_all(void)
+{
+	int i;
+
+	if (pnp_registered)
+		pnp_unregister_card_driver(&sscape_pnpc_driver);
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&snd_sscape_driver);
+}
+
 static int __init sscape_manual_probe(void)
 {
 	struct platform_device *device;
@@ -1411,8 +1425,8 @@ static int __init sscape_manual_probe(void)
 		    dma[i] == SNDRV_AUTO_DMA) {
 			printk(KERN_INFO
 			       "sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n");
-			platform_driver_unregister(&snd_sscape_driver);
-			return -ENXIO;
+			ret = -ENXIO;
+			goto errout;
 		}
 
 		/*
@@ -1421,17 +1435,21 @@ static int __init sscape_manual_probe(void)
 		device = platform_device_register_simple(SSCAPE_DRIVER,
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
-			platform_driver_unregister(&snd_sscape_driver);
-			return PTR_ERR(device);
+			ret = PTR_ERR(device);
+			goto errout;
 		}
+		platform_devices[i] = device;
 	}
 	return 0;
+
+ errout:
+	sscape_unregister_all();
+	return ret;
 }
 
 static void sscape_exit(void)
 {
-	pnp_unregister_card_driver(&sscape_pnpc_driver);
-	platform_driver_unregister(&snd_sscape_driver);
+	sscape_unregister_all();
 }
 
 
@@ -1448,7 +1466,8 @@ static int __init sscape_init(void)
 	ret = sscape_manual_probe();
 	if (ret < 0)
 		return ret;
-	pnp_register_card_driver(&sscape_pnpc_driver);
+	if (pnp_register_card_driver(&sscape_pnpc_driver) >= 0)
+		pnp_registered = 1;
 	return 0;
 }
 
diff --git a/sound/isa/wavefront/wavefront.c b/sound/isa/wavefront/wavefront.c
index 77a3012..a6dcb2f 100644
--- a/sound/isa/wavefront/wavefront.c
+++ b/sound/isa/wavefront/wavefront.c
@@ -83,6 +83,9 @@ MODULE_PARM_DESC(fm_port, "FM port #.");
 module_param_array(use_cs4232_midi, bool, NULL, 0444);
 MODULE_PARM_DESC(use_cs4232_midi, "Use CS4232 MPU-401 interface (inaccessibly located inside your computer)");
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
+static int pnp_registered;
+
 
 #ifdef CONFIG_PNP
 
@@ -688,6 +691,17 @@ static struct pnp_card_driver wavefront_pnpc_driver = {
 
 #endif /* CONFIG_PNP */
 
+static void __init_or_module snd_wavefront_unregister_all(void)
+{
+	int i;
+
+	if (pnp_registered)
+		pnp_unregister_card_driver(&wavefront_pnpc_driver);
+	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+		platform_device_unregister(platform_devices[i]);
+	platform_driver_unregister(&snd_wavefront_driver);
+}
+
 static int __init alsa_card_wavefront_init(void)
 {
 	int i, err, cards = 0;
@@ -704,31 +718,36 @@ static int __init alsa_card_wavefront_init(void)
 		device = platform_device_register_simple(WAVEFRONT_DRIVER,
 							 i, NULL, 0);
 		if (IS_ERR(device)) {
-			platform_driver_unregister(&snd_wavefront_driver);
-			return PTR_ERR(device);
+			err = PTR_ERR(device);
+			goto errout;
 		}
+		platform_devices[i] = device;
 		cards++;
 	}
 
 	i = pnp_register_card_driver(&wavefront_pnpc_driver);
-	if (i > 0)
+	if (i >= 0) {
+		pnp_registered = 1;
 		cards += i;
+	}
 
 	if (!cards) {
-		pnp_unregister_card_driver(&wavefront_pnpc_driver);
-		platform_driver_unregister(&snd_wavefront_driver);
 #ifdef MODULE
 		printk (KERN_ERR "No WaveFront cards found or devices busy\n");
 #endif
-		return -ENODEV;
+		err = -ENODEV;
+		goto errout;
 	}
 	return 0;
+
+ errout:
+	snd_wavefront_unregister_all();
+	return err;
 }
 
 static void __exit alsa_card_wavefront_exit(void)
 {
-	pnp_unregister_card_driver(&wavefront_pnpc_driver);
-	platform_driver_unregister(&snd_wavefront_driver);
+	snd_wavefront_unregister_all();
 }
 
 module_init(alsa_card_wavefront_init)