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authorRicardo Cerqueira <v4l@cerqueira.org>2005-12-01 11:51:20 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2005-12-02 02:48:56 +0300
commitf5b974cb16dd95d1ae0424f68f74550dbd793a33 (patch)
tree214fa2dc0ac32d84c56fe4a74b613eae6fbf68a0 /drivers/media/video/saa7134/saa7134-alsa.c
parent938606b02b3d7b587777e5b1e44f4196903250ca (diff)
downloadlinux-f5b974cb16dd95d1ae0424f68f74550dbd793a33.tar.xz
[PATCH] V4L: Fix hotplugging issues with saa7134
- Fixed issue with hotplugging and DMA sound (sound was lost when replugging a card) - Added notifiers to main saa7134 module to let the sound sub-modules know when a card has been inserted or removed Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/media/video/saa7134/saa7134-alsa.c')
-rw-r--r--drivers/media/video/saa7134/saa7134-alsa.c29
1 files changed, 22 insertions, 7 deletions
diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c
index 5707c666660b..32a1f3ec4410 100644
--- a/drivers/media/video/saa7134/saa7134-alsa.c
+++ b/drivers/media/video/saa7134/saa7134-alsa.c
@@ -58,8 +58,6 @@ static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
-int position;
-
#define dprintk(fmt, arg...) if (debug) \
printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ## arg)
@@ -945,6 +943,8 @@ int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
sprintf(card->longname, "%s at 0x%lx irq %d",
chip->dev->name, chip->iobase, chip->irq);
+ printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
+
if ((err = snd_card_register(card)) == 0) {
snd_saa7134_cards[devnum] = card;
return 0;
@@ -955,6 +955,22 @@ __nodev:
return err;
}
+
+static int alsa_device_init(struct saa7134_dev *dev)
+{
+ dev->dmasound.priv_data = dev;
+ alsa_card_saa7134_create(dev,dev->nr);
+ return 1;
+}
+
+static int alsa_device_exit(struct saa7134_dev *dev)
+{
+
+ snd_card_free(snd_saa7134_cards[dev->nr]);
+ snd_saa7134_cards[dev->nr] = NULL;
+ return 1;
+}
+
/*
* Module initializer
*
@@ -968,22 +984,21 @@ static int saa7134_alsa_init(void)
struct saa7134_dev *dev = NULL;
struct list_head *list;
- position = 0;
-
printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
list_for_each(list,&saa7134_devlist) {
dev = list_entry(list, struct saa7134_dev, devlist);
if (dev->dmasound.priv_data == NULL) {
- dev->dmasound.priv_data = dev;
- alsa_card_saa7134_create(dev,position);
- position++;
+ alsa_device_init(dev);
} else {
printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
return -EBUSY;
}
}
+ dmasound_init = alsa_device_init;
+ dmasound_exit = alsa_device_exit;
+
if (dev == NULL)
printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");