[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/isa/cs423x/cs4231.c b/sound/isa/cs423x/cs4231.c
index b5252a5d7412..ab67b5c2590d 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)