Messages in this thread Patch in this message | | | Date | Wed, 06 May 2009 14:45:34 -0700 | From | Greg KH <> | Subject | [patch 06/58] ALSA: us122l: add snd_us122l_free() |
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2.6.29-stable review patch. If anyone has any objections, please let us know.
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From: Karsten Wiese <fzu@wemgehoertderstaat.de>
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 <fzu@wemgehoertderstaat.de> Cc: stable@kernel.org Signed-off-by: Takashi Iwai <tiwai@suse.de> [chrisw: backport to 2.6.29] Signed-off-by: Chris Wright <chrisw@sous-sol.org> --- sound/usb/usx2y/us122l.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
--- a/sound/usb/usx2y/us122l.c +++ b/sound/usb/usx2y/us122l.c @@ -478,6 +478,14 @@ static bool us122l_create_card(struct sn 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_car 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_put_intf(intf); - usb_put_dev(US122L(card)->chip.dev); + usb_put_dev(us122l->chip.dev); while (atomic_read(&us122l->mmap_count)) msleep(500);
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