From d2d83e1f527b6b0faf15d54b22c032ed5812d054 Mon Sep 17 00:00:00 2001 From: Karsten Wiese Date: Fri, 24 Apr 2009 16:05:19 +0000 Subject: [PATCH] ALSA: us122l: add snd_us122l_free() upstream commit: 5d4af1be06affa2b42cdf59cd376752be1f934b3 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 Cc: stable@kernel.org Signed-off-by: Takashi Iwai [chrisw: backport to 2.6.29] Signed-off-by: Chris Wright --- sound/usb/usx2y/us122l.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c index 73e59f4403a4..9ce1c597ed62 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 struct snd_card *usx2y_create_card(struct usb_device *device) { int dev; @@ -492,7 +500,7 @@ static struct snd_card *usx2y_create_card(struct usb_device *device) if (!card) return NULL; 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); @@ -575,7 +583,7 @@ 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); -- 2.39.5