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/device.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) (limited to 'sound/core/device.c') diff --git a/sound/core/device.c b/sound/core/device.c index 6ce4da4..ccb2581 100644 --- a/sound/core/device.c +++ b/sound/core/device.c @@ -71,7 +71,7 @@ EXPORT_SYMBOL(snd_device_new); * @device_data: the data pointer to release * * Removes the device from the list on the card and invokes the - * callback, dev_unregister or dev_free, corresponding to the state. + * callbacks, dev_disconnect and dev_free, corresponding to the state. * Then release the device. * * Returns zero if successful, or a negative error code on failure or if the @@ -90,16 +90,14 @@ int snd_device_free(struct snd_card *card, void *device_data) continue; /* unlink */ list_del(&dev->list); - if ((dev->state == SNDRV_DEV_REGISTERED || - dev->state == SNDRV_DEV_DISCONNECTED) && - dev->ops->dev_unregister) { - if (dev->ops->dev_unregister(dev)) - snd_printk(KERN_ERR "device unregister failure\n"); - } else { - if (dev->ops->dev_free) { - if (dev->ops->dev_free(dev)) - snd_printk(KERN_ERR "device free failure\n"); - } + if (dev->state == SNDRV_DEV_REGISTERED && + dev->ops->dev_disconnect) + if (dev->ops->dev_disconnect(dev)) + snd_printk(KERN_ERR + "device disconnect failure\n"); + if (dev->ops->dev_free) { + if (dev->ops->dev_free(dev)) + snd_printk(KERN_ERR "device free failure\n"); } kfree(dev); return 0; -- cgit v1.1