From c461482c8072bb073e6146db320d3da85cdc89ad Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 23 Jun 2006 14:38:23 +0200 Subject: [ALSA] Unregister device files at disconnection Orignally proposed by Sam Revitch . Unregister device files at disconnection to avoid the futher accesses. Also, the dev_unregister callback is removed and replaced with the combination of disconnect + free. A new function snd_card_free_when_closed() is introduced, which is used in USB disconnect callback. Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/core/oss/mixer_oss.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'sound/core/oss/mixer_oss.c') diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index 00c95def95a..f4c67042e3a 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -1310,21 +1310,19 @@ static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd) card->mixer_oss = mixer; snd_mixer_oss_build(mixer); snd_mixer_oss_proc_init(mixer); - } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) { - mixer = card->mixer_oss; - if (mixer == NULL || !mixer->oss_dev_alloc) - return 0; - snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); - mixer->oss_dev_alloc = 0; - } else { /* free */ + } else { mixer = card->mixer_oss; if (mixer == NULL) return 0; + if (mixer->oss_dev_alloc) { #ifdef SNDRV_OSS_INFO_DEV_MIXERS - snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); + snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); #endif - if (mixer->oss_dev_alloc) snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); + mixer->oss_dev_alloc = 0; + } + if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) + return 0; snd_mixer_oss_proc_done(mixer); return snd_mixer_oss_free1(mixer); } -- cgit v1.2.3