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authorKarsten Wiese <fzu@wemgehoertderstaat.de>2009-04-20 13:01:21 +0200
committerTakashi Iwai <tiwai@suse.de>2009-04-20 13:39:38 +0200
commit5d4af1be06affa2b42cdf59cd376752be1f934b3 (patch)
tree65617051a596a59159b5d69abe5c8d9c68013e19
parentf600f6c4824d7e40be370f7e26ab0fbc3f6f911c (diff)
ALSA: us122l: add snd_us122l_free()
Use it to clean up snd_us122l_card_used[]. Without patch unplugging of an US122L soundcard didn't reset the corresponding element of snd_us122l_card_used[] to 0. The (SNDRV_CARDS + 1)th plugging in did not result in creating the soundcard device anymore. Index values supplied with the modprobe command line were not used correctly anymore after the first unplugging of an US122L. Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de> Cc: stable@kernel.org Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/usb/usx2y/us122l.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index 98276aafefe..463f3ffe3fb 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -478,6 +478,14 @@ static bool us122l_create_card(struct snd_card *card)
return true;
}
+static void snd_us122l_free(struct snd_card *card)
+{
+ struct us122l *us122l = US122L(card);
+ int index = us122l->chip.index;
+ if (index >= 0 && index < SNDRV_CARDS)
+ snd_us122l_card_used[index] = 0;
+}
+
static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
{
int dev;
@@ -494,7 +502,7 @@ static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
if (err < 0)
return err;
snd_us122l_card_used[US122L(card)->chip.index = dev] = 1;
-
+ card->private_free = snd_us122l_free;
US122L(card)->chip.dev = device;
US122L(card)->chip.card = card;
mutex_init(&US122L(card)->mutex);
@@ -588,7 +596,7 @@ static void snd_us122l_disconnect(struct usb_interface *intf)
}
usb_put_intf(intf);
- usb_put_dev(US122L(card)->chip.dev);
+ usb_put_dev(us122l->chip.dev);
while (atomic_read(&us122l->mmap_count))
msleep(500);