[ALSA] unregister platform devices

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

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

1 files changed, 14 insertions, 2 deletions

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)