Now that all callers have been replaced with snd_device_register_for_dev(), let's drop the obsolete device registration code and concentrate only on the code handling struct device directly. That said,
- remove the old snd_device_register(), - rename snd_device_register_for_dev() with snd_device_register(), - drop superfluous arguments from snd_device_register(), - change snd_unregister_device() to pass the device pointer directly
Signed-off-by: Takashi Iwai tiwai@suse.de --- include/sound/core.h | 39 +++------------------------ sound/core/compress_offload.c | 10 +++---- sound/core/control.c | 7 +++-- sound/core/hwdep.c | 9 +++---- sound/core/pcm.c | 21 ++++----------- sound/core/rawmidi.c | 11 ++++---- sound/core/seq/seq_clientmgr.c | 7 +++-- sound/core/sound.c | 61 ++++++++++++++++-------------------------- sound/core/timer.c | 7 +++-- 9 files changed, 54 insertions(+), 118 deletions(-)
diff --git a/include/sound/core.h b/include/sound/core.h index 4b7e04e85e16..67ac309bb218 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -187,7 +187,6 @@ struct snd_minor { int type; /* SNDRV_DEVICE_TYPE_XXX */ int card; /* card number */ int device; /* device number */ - bool created; const struct file_operations *f_ops; /* file operations */ void *private_data; /* private data for f_ops->open */ struct device *dev; /* device for sysfs */ @@ -210,40 +209,10 @@ void snd_request_card(int card);
void snd_device_initialize(struct device *dev, struct snd_card *card);
-int snd_register_device_for_dev(int type, struct snd_card *card, int dev, - const struct file_operations *f_ops, - void *private_data, struct device *device, - struct device *parent, const char *name); - -/** - * snd_register_device - Register the ALSA device file for the card - * @type: the device type, SNDRV_DEVICE_TYPE_XXX - * @card: the card instance - * @dev: the device index - * @f_ops: the file operations - * @private_data: user pointer for f_ops->open() - * @name: the device file name - * - * Registers an ALSA device file for the given card. - * The operators have to be set in reg parameter. - * - * This function uses the card's device pointer to link to the - * correct &struct device. - * - * Return: Zero if successful, or a negative error code on failure. - */ -static inline int snd_register_device(int type, struct snd_card *card, int dev, - const struct file_operations *f_ops, - void *private_data, - const char *name) -{ - return snd_register_device_for_dev(type, card, dev, f_ops, - private_data, NULL, - snd_card_get_device_link(card), - name); -} - -int snd_unregister_device(int type, struct snd_card *card, int dev); +int snd_register_device(int type, struct snd_card *card, int dev, + const struct file_operations *f_ops, + void *private_data, struct device *device); +int snd_unregister_device(struct device *dev); void *snd_lookup_minor_data(unsigned int minor, int type); struct device *snd_get_device(int type, struct snd_card *card, int dev);
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index cb58c3f7f80c..b123c42e7dc8 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -871,10 +871,9 @@ static int snd_compress_dev_register(struct snd_device *device) pr_debug("reg %s for device %s, direction %d\n", str, compr->name, compr->direction); /* register compressed device */ - ret = snd_register_device_for_dev(SNDRV_DEVICE_TYPE_COMPRESS, - compr->card, compr->device, - &snd_compr_file_ops, compr, - &compr->dev, NULL, NULL); + ret = snd_register_device(SNDRV_DEVICE_TYPE_COMPRESS, + compr->card, compr->device, + &snd_compr_file_ops, compr, &compr->dev); if (ret < 0) { pr_err("snd_register_device failed\n %d", ret); return ret; @@ -888,8 +887,7 @@ static int snd_compress_dev_disconnect(struct snd_device *device) struct snd_compr *compr;
compr = device->device_data; - snd_unregister_device(SNDRV_DEVICE_TYPE_COMPRESS, compr->card, - compr->device); + snd_unregister_device(&compr->dev); return 0; }
diff --git a/sound/core/control.c b/sound/core/control.c index e214fabbc671..60caba1f2211 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -1661,9 +1661,8 @@ static int snd_ctl_dev_register(struct snd_device *device) { struct snd_card *card = device->device_data;
- return snd_register_device_for_dev(SNDRV_DEVICE_TYPE_CONTROL, card, - -1, &snd_ctl_f_ops, card, - &card->ctl_dev, NULL, NULL); + return snd_register_device(SNDRV_DEVICE_TYPE_CONTROL, card, -1, + &snd_ctl_f_ops, card, &card->ctl_dev); }
/* @@ -1681,7 +1680,7 @@ static int snd_ctl_dev_disconnect(struct snd_device *device) } read_unlock(&card->ctl_files_rwlock);
- return snd_unregister_device(SNDRV_DEVICE_TYPE_CONTROL, card, -1); + return snd_unregister_device(&card->ctl_dev); }
/* diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c index 506387ba645d..84244a5143cf 100644 --- a/sound/core/hwdep.c +++ b/sound/core/hwdep.c @@ -432,10 +432,9 @@ static int snd_hwdep_dev_register(struct snd_device *device) return -EBUSY; } list_add_tail(&hwdep->list, &snd_hwdep_devices); - err = snd_register_device_for_dev(SNDRV_DEVICE_TYPE_HWDEP, - hwdep->card, hwdep->device, - &snd_hwdep_f_ops, hwdep, - &hwdep->dev, NULL, NULL); + err = snd_register_device(SNDRV_DEVICE_TYPE_HWDEP, + hwdep->card, hwdep->device, + &snd_hwdep_f_ops, hwdep, &hwdep->dev); if (err < 0) { dev_err(&hwdep->dev, "unable to register\n"); list_del(&hwdep->list); @@ -480,7 +479,7 @@ static int snd_hwdep_dev_disconnect(struct snd_device *device) if (hwdep->ossreg) snd_unregister_oss_device(hwdep->oss_type, hwdep->card, hwdep->device); #endif - snd_unregister_device(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card, hwdep->device); + snd_unregister_device(&hwdep->dev); list_del_init(&hwdep->list); mutex_unlock(&hwdep->open_mutex); mutex_unlock(®ister_mutex); diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 4d5120f7a8ab..0345e53a340c 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -1105,11 +1105,9 @@ static int snd_pcm_dev_register(struct snd_device *device) break; } /* register pcm */ - err = snd_register_device_for_dev(devtype, pcm->card, - pcm->device, - &snd_pcm_f_ops[cidx], - pcm, &pcm->streams[cidx].dev, - NULL, NULL); + err = snd_register_device(devtype, pcm->card, pcm->device, + &snd_pcm_f_ops[cidx], pcm, + &pcm->streams[cidx].dev); if (err < 0) { list_del(&pcm->list); mutex_unlock(®ister_mutex); @@ -1132,7 +1130,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device) struct snd_pcm *pcm = device->device_data; struct snd_pcm_notify *notify; struct snd_pcm_substream *substream; - int cidx, devtype; + int cidx;
mutex_lock(®ister_mutex); if (list_empty(&pcm->list)) @@ -1155,16 +1153,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device) notify->n_disconnect(pcm); } for (cidx = 0; cidx < 2; cidx++) { - devtype = -1; - switch (cidx) { - case SNDRV_PCM_STREAM_PLAYBACK: - devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK; - break; - case SNDRV_PCM_STREAM_CAPTURE: - devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE; - break; - } - snd_unregister_device(devtype, pcm->card, pcm->device); + snd_unregister_device(&pcm->streams[cidx].dev); if (pcm->streams[cidx].chmap_kctl) { snd_ctl_remove(pcm->card, pcm->streams[cidx].chmap_kctl); pcm->streams[cidx].chmap_kctl = NULL; diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index bccbf7e375d6..b5a748596fc4 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -1581,10 +1581,9 @@ static int snd_rawmidi_dev_register(struct snd_device *device) return -EBUSY; } list_add_tail(&rmidi->list, &snd_rawmidi_devices); - err = snd_register_device_for_dev(SNDRV_DEVICE_TYPE_RAWMIDI, - rmidi->card, rmidi->device, - &snd_rawmidi_f_ops, rmidi, - &rmidi->dev, NULL, NULL); + err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI, + rmidi->card, rmidi->device, + &snd_rawmidi_f_ops, rmidi, &rmidi->dev); if (err < 0) { rmidi_err(rmidi, "unable to register\n"); list_del(&rmidi->list); @@ -1593,7 +1592,7 @@ static int snd_rawmidi_dev_register(struct snd_device *device) } if (rmidi->ops && rmidi->ops->dev_register && (err = rmidi->ops->dev_register(rmidi)) < 0) { - snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device); + snd_unregister_device(&rmidi->dev); list_del(&rmidi->list); mutex_unlock(®ister_mutex); return err; @@ -1681,7 +1680,7 @@ static int snd_rawmidi_dev_disconnect(struct snd_device *device) rmidi->ossreg = 0; } #endif /* CONFIG_SND_OSSEMUL */ - snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device); + snd_unregister_device(&rmidi->dev); mutex_unlock(&rmidi->open_mutex); mutex_unlock(®ister_mutex); return 0; diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 65b320ec66f1..2b62cd021bc5 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -2586,9 +2586,8 @@ int __init snd_sequencer_device_init(void) if (mutex_lock_interruptible(®ister_mutex)) return -ERESTARTSYS;
- err = snd_register_device_for_dev(SNDRV_DEVICE_TYPE_SEQUENCER, NULL, 0, - &snd_seq_f_ops, NULL, - &seq_dev, NULL, NULL); + err = snd_register_device(SNDRV_DEVICE_TYPE_SEQUENCER, NULL, 0, + &snd_seq_f_ops, NULL, &seq_dev); if (err < 0) { mutex_unlock(®ister_mutex); put_device(&seq_dev); @@ -2607,6 +2606,6 @@ int __init snd_sequencer_device_init(void) */ void __exit snd_sequencer_device_done(void) { - snd_unregister_device(SNDRV_DEVICE_TYPE_SEQUENCER, NULL, 0); + snd_unregister_device(&seq_dev); put_device(&seq_dev); } diff --git a/sound/core/sound.c b/sound/core/sound.c index ea1af1acdbe9..515e62506541 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -242,30 +242,30 @@ static int snd_kernel_minor(int type, struct snd_card *card, int dev) #endif
/** - * snd_register_device_for_dev - Register the ALSA device file for the card + * snd_register_device - Register the ALSA device file for the card * @type: the device type, SNDRV_DEVICE_TYPE_XXX * @card: the card instance * @dev: the device index * @f_ops: the file operations * @private_data: user pointer for f_ops->open() - * @device: the device to register, NULL to create a new one - * @parent: the &struct device to link this new device to (only for device=NULL) - * @name: the device file name (only for device=NULL) + * @device: the device to register * * Registers an ALSA device file for the given card. * The operators have to be set in reg parameter. * * Return: Zero if successful, or a negative error code on failure. */ -int snd_register_device_for_dev(int type, struct snd_card *card, int dev, - const struct file_operations *f_ops, - void *private_data, struct device *device, - struct device *parent, const char *name) +int snd_register_device(int type, struct snd_card *card, int dev, + const struct file_operations *f_ops, + void *private_data, struct device *device) { int minor; int err = 0; struct snd_minor *preg;
+ if (snd_BUG_ON(!device)) + return -EINVAL; + preg = kmalloc(sizeof *preg, GFP_KERNEL); if (preg == NULL) return -ENOMEM; @@ -288,19 +288,9 @@ int snd_register_device_for_dev(int type, struct snd_card *card, int dev, goto error; }
- if (device) { - preg->created = false; - preg->dev = device; - device->devt = MKDEV(major, minor); - err = device_add(device); - } else { - preg->created = true; - preg->dev = device_create(sound_class, parent, - MKDEV(major, minor), private_data, - "%s", name); - if (IS_ERR(preg->dev)) - err = PTR_ERR(preg->dev); - } + preg->dev = device; + device->devt = MKDEV(major, minor); + err = device_add(device); if (err < 0) goto error;
@@ -311,8 +301,7 @@ int snd_register_device_for_dev(int type, struct snd_card *card, int dev, kfree(preg); return err; } - -EXPORT_SYMBOL(snd_register_device_for_dev); +EXPORT_SYMBOL(snd_register_device);
/* find the matching minor record * return the index of snd_minor, or -1 if not found @@ -343,30 +332,26 @@ static int find_snd_minor(int type, struct snd_card *card, int dev) * * Return: Zero if successful, or a negative error code on failure. */ -int snd_unregister_device(int type, struct snd_card *card, int dev) +int snd_unregister_device(struct device *dev) { int minor; struct snd_minor *preg;
mutex_lock(&sound_mutex); - minor = find_snd_minor(type, card, dev); - if (minor < 0) { - mutex_unlock(&sound_mutex); - return -EINVAL; + for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor) { + preg = snd_minors[minor]; + if (preg && preg->dev == dev) { + snd_minors[minor] = NULL; + device_del(dev); + kfree(preg); + break; + } } - - preg = snd_minors[minor]; - if (preg && !preg->created) - device_del(preg->dev); - else - device_destroy(sound_class, MKDEV(major, minor)); - - kfree(snd_minors[minor]); - snd_minors[minor] = NULL; mutex_unlock(&sound_mutex); + if (minor >= ARRAY_SIZE(snd_minors)) + return -ENOENT; return 0; } - EXPORT_SYMBOL(snd_unregister_device);
/** diff --git a/sound/core/timer.c b/sound/core/timer.c index dae40ac11e04..9f0c703ef081 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -1976,9 +1976,8 @@ static int __init alsa_timer_init(void) return err; }
- err = snd_register_device_for_dev(SNDRV_DEVICE_TYPE_TIMER, NULL, 0, - &snd_timer_f_ops, NULL, - &timer_dev, NULL, NULL); + err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0, + &snd_timer_f_ops, NULL, &timer_dev); if (err < 0) { pr_err("ALSA: unable to register timer device (%i)\n", err); snd_timer_free_all(); @@ -1992,7 +1991,7 @@ static int __init alsa_timer_init(void)
static void __exit alsa_timer_exit(void) { - snd_unregister_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0); + snd_unregister_device(&timer_dev); snd_timer_free_all(); put_device(&timer_dev); snd_timer_proc_done();