[ALSA] unregister platform devices

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

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

5 files changed, 60 insertions, 13 deletions

diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 186117571745..96d207051628 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -144,6 +144,8 @@ MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-16) for dummy driver.");
 //module_param_array(midi_devs, int, NULL, 0444);
 //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 #define MIXER_ADDR_MASTER       0
 #define MIXER_ADDR_LINE         1
 #define MIXER_ADDR_MIC          2
@@ -634,6 +636,15 @@ static struct platform_driver snd_dummy_driver = {
         },
 };
 
+static void __init_or_module snd_dummy_unregister_all(void)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(devices); ++i)
+                platform_device_unregister(devices[i]);
+        platform_driver_unregister(&snd_dummy_driver);
+}
+
 static int __init alsa_card_dummy_init(void)
 {
         int i, cards, err;
@@ -650,6 +661,7 @@ static int __init alsa_card_dummy_init(void)
                         err = PTR_ERR(device);
                         goto errout;
                 }
+                devices[i] = device;
                 cards++;
         }
         if (!cards) {
@@ -662,13 +674,13 @@ static int __init alsa_card_dummy_init(void)
         return 0;
 
  errout:
-        platform_driver_unregister(&snd_dummy_driver);
+        snd_dummy_unregister_all();
         return err;
 }
 
 static void __exit alsa_card_dummy_exit(void)
 {
-        platform_driver_unregister(&snd_dummy_driver);
+        snd_dummy_unregister_all();
 }
 
 module_init(alsa_card_dummy_init)
diff --git a/sound/drivers/mpu401/mpu401.c b/sound/drivers/mpu401/mpu401.c
index ec817a86d3dd..915589a402ab 100644
--- a/sound/drivers/mpu401/mpu401.c
+++ b/sound/drivers/mpu401/mpu401.c
@@ -58,6 +58,7 @@ MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
 module_param_array(irq, int, NULL, 0444);
 MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
 
+static struct platform_device *platform_devices[SNDRV_CARDS];
 static int pnp_registered = 0;
 
 static int snd_mpu401_create(int dev, struct snd_card **rcard)
@@ -220,6 +221,17 @@ static struct pnp_driver snd_mpu401_pnp_driver = {
 static struct pnp_driver snd_mpu401_pnp_driver;
 #endif
 
+static void __init_or_module snd_mpu401_unregister_all(void)
+{
+        int i;
+
+        if (pnp_registered)
+                pnp_unregister_driver(&snd_mpu401_pnp_driver);
+        for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
+                platform_device_unregister(platform_devices[i]);
+        platform_driver_unregister(&snd_mpu401_driver);
+}
+
 static int __init alsa_card_mpu401_init(void)
 {
         int i, err, devices;
@@ -240,6 +252,7 @@ static int __init alsa_card_mpu401_init(void)
                         err = PTR_ERR(device);
                         goto errout;
                 }
+                platform_devices[i] = device;
                 devices++;
         }
         if ((err = pnp_register_driver(&snd_mpu401_pnp_driver)) >= 0) {
@@ -257,17 +270,13 @@ static int __init alsa_card_mpu401_init(void)
         return 0;
 
  errout:
-        if (pnp_registered)
-                pnp_unregister_driver(&snd_mpu401_pnp_driver);
-        platform_driver_unregister(&snd_mpu401_driver);
+        snd_mpu401_unregister_all();
         return err;
 }
 
 static void __exit alsa_card_mpu401_exit(void)
 {
-        if (pnp_registered)
-                pnp_unregister_driver(&snd_mpu401_pnp_driver);
-        platform_driver_unregister(&snd_mpu401_driver);
+        snd_mpu401_unregister_all();
 }
 
 module_init(alsa_card_mpu401_init)
diff --git a/sound/drivers/mtpav.c b/sound/drivers/mtpav.c
index d9c4e224fa5f..b7a0b42813e1 100644
--- a/sound/drivers/mtpav.c
+++ b/sound/drivers/mtpav.c
@@ -95,6 +95,8 @@ MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
 module_param(hwports, int, 0444);
 MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
 
+static struct platform_device *device;
+
 /*
  *      defines
  */
@@ -763,7 +765,6 @@ static struct platform_driver snd_mtpav_driver = {
 static int __init alsa_card_mtpav_init(void)
 {
         int err;
-        struct platform_device *device;
 
         if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
                 return err;
@@ -778,6 +779,7 @@ static int __init alsa_card_mtpav_init(void)
 
 static void __exit alsa_card_mtpav_exit(void)
 {
+        platform_device_unregister(device);
         platform_driver_unregister(&snd_mtpav_driver);
 }
 
diff --git a/sound/drivers/serial-u16550.c b/sound/drivers/serial-u16550.c
index 3381a43c592e..29676d800cae 100644
--- a/sound/drivers/serial-u16550.c
+++ b/sound/drivers/serial-u16550.c
@@ -168,6 +168,8 @@ typedef struct _snd_uart16550 {
 
 } snd_uart16550_t;
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 static inline void snd_uart16550_add_timer(snd_uart16550_t *uart)
 {
         if (! uart->timer_running) {
@@ -970,6 +972,15 @@ static struct platform_driver snd_serial_driver = {
         },
 };
 
+static void __init_or_module snd_serial_unregister_all(void)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(devices); ++i)
+                platform_device_unregister(devices[i]);
+        platform_driver_unregister(&snd_serial_driver);
+}
+
 static int __init alsa_card_serial_init(void)
 {
         int i, cards, err;
@@ -986,6 +997,7 @@ static int __init alsa_card_serial_init(void)
                         err = PTR_ERR(device);
                         goto errout;
                 }
+                devices[i] = device;
                 cards++;
         }
         if (! cards) {
@@ -998,13 +1010,13 @@ static int __init alsa_card_serial_init(void)
         return 0;
 
  errout:
-        platform_driver_unregister(&snd_serial_driver);
+        snd_serial_unregister_all();
         return err;
 }
 
 static void __exit alsa_card_serial_exit(void)
 {
-        platform_driver_unregister(&snd_serial_driver);
+        snd_serial_unregister_all();
 }
 
 module_init(alsa_card_serial_init)
diff --git a/sound/drivers/virmidi.c b/sound/drivers/virmidi.c
index 9f36a6472478..4258723de2ab 100644
--- a/sound/drivers/virmidi.c
+++ b/sound/drivers/virmidi.c
@@ -82,6 +82,8 @@ struct snd_card_virmidi {
         struct snd_rawmidi *midi[MAX_MIDI_DEVICES];
 };
 
+static struct platform_device *devices[SNDRV_CARDS];
+
 
 static int __init snd_virmidi_probe(struct platform_device *devptr)
 {
@@ -144,6 +146,15 @@ static struct platform_driver snd_virmidi_driver = {
         },
 };
 
+static void __init_or_module snd_virmidi_unregister_all(void)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(devices); ++i)
+                platform_device_unregister(devices[i]);
+        platform_driver_unregister(&snd_virmidi_driver);
+}
+
 static int __init alsa_card_virmidi_init(void)
 {
         int i, cards, err;
@@ -160,6 +171,7 @@ static int __init alsa_card_virmidi_init(void)
                         err = PTR_ERR(device);
                         goto errout;
                 }
+                devices[i] = device;
                 cards++;
         }
         if (!cards) {
@@ -172,13 +184,13 @@ static int __init alsa_card_virmidi_init(void)
         return 0;
 
  errout:
-        platform_driver_unregister(&snd_virmidi_driver);
+        snd_virmidi_unregister_all();
         return err;
 }
 
 static void __exit alsa_card_virmidi_exit(void)
 {
-        platform_driver_unregister(&snd_virmidi_driver);
+        snd_virmidi_unregister_all();
 }
 
 module_init(alsa_card_virmidi_init)