From 689faacd1d952908f3591aa58fb3216bbc3458bf Mon Sep 17 00:00:00 2001
From: Ricardo Cerqueira <devnull@localhost>
Date: Tue, 8 Nov 2005 13:30:07 +0000
Subject: - SAA7134/ALSA IRQ management improvements

Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>
---
 linux/drivers/media/video/saa7134/saa7134-alsa.c | 41 +++++++++++-------------
 1 file changed, 19 insertions(+), 22 deletions(-)

(limited to 'linux/drivers/media/video')

diff --git a/linux/drivers/media/video/saa7134/saa7134-alsa.c b/linux/drivers/media/video/saa7134/saa7134-alsa.c
index 9813a23ca..dd8317619 100644
--- a/linux/drivers/media/video/saa7134/saa7134-alsa.c
+++ b/linux/drivers/media/video/saa7134/saa7134-alsa.c
@@ -1,7 +1,7 @@
 /*
  *   SAA713x ALSA support for V4L
  *
- *   $Id: saa7134-alsa.c,v 1.17 2005/11/08 13:14:21 mchehab Exp $
+ *   $Id: saa7134-alsa.c,v 1.18 2005/11/08 13:30:07 rmcc Exp $
  *
  *   Caveats:
  *        - Volume doesn't work (it's always at max)
@@ -60,7 +60,7 @@ 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 = 0;
+int position;
 
 #define dprintk(fmt, arg...)    if (debug) \
 	printk(KERN_DEBUG "%s/alsa: " fmt, dev->name, ## arg)
@@ -379,7 +379,7 @@ static int snd_card_saa7134_capture_prepare(snd_pcm_substream_t * substream)
 
 	err = dsp_buffer_init(dev);
 	if (0 != err)
-		goto fail2;
+		return err;
 
 	/* prepare buffer */
 	if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->dmasound.dma)))
@@ -570,10 +570,8 @@ static void snd_card_saa7134_runtime_free(snd_pcm_runtime_t *runtime)
 static int snd_card_saa7134_hw_params(snd_pcm_substream_t * substream,
 				    snd_pcm_hw_params_t * hw_params)
 {
-
 	return 0;
 
-
 }
 
 /*
@@ -800,7 +798,6 @@ static int snd_saa7134_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_
 static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 {
 	snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
-	unsigned long flags;
 	int change, addr = kcontrol->private_value;
 	int left, right;
 	u32 anabar, xbarin;
@@ -811,14 +808,14 @@ static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_
 
 	left = ucontrol->value.integer.value[0] & 1;
 	right = ucontrol->value.integer.value[1] & 1;
-	spin_lock_irqsave(&chip->mixer_lock, flags);
+	spin_lock_irq(&chip->mixer_lock);
 
 	change = chip->capture_source[addr][0] != left ||
 		 chip->capture_source[addr][1] != right;
 	chip->capture_source[addr][0] = left;
 	chip->capture_source[addr][1] = right;
 	dev->dmasound.input=addr;
-	spin_unlock_irqrestore(&chip->mixer_lock, flags);
+	spin_unlock_irq(&chip->mixer_lock);
 
 
 	if (change) {
@@ -908,20 +905,21 @@ static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
 	return 0;
 }
 
-static int snd_saa7134_free(snd_card_saa7134_t *chip)
+static void snd_saa7134_free(snd_card_t * card)
 {
-	if (chip->irq >= 0) {
-		synchronize_irq(chip->irq);
-		free_irq(chip->irq, (void *) chip);
-	}
-	kfree(chip);
-	return 0;
+	return;
 }
 
 static int snd_saa7134_dev_free(snd_device_t *device)
 {
 	snd_card_saa7134_t *chip = device->device_data;
-	return snd_saa7134_free(chip);
+
+	if (chip->irq >= 0) {
+		synchronize_irq(chip->irq);
+		free_irq(chip->irq, (void *) chip);
+	}
+
+	return 0;
 }
 
 /*
@@ -948,7 +946,7 @@ int alsa_card_saa7134_create(struct saa7134_dev *saadev, int dev)
 	if (!enable[dev])
 		return -ENODEV;
 
-	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+	card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(snd_card_saa7134_t));
 
 	if (card == NULL)
 		return -ENOMEM;
@@ -957,10 +955,8 @@ int alsa_card_saa7134_create(struct saa7134_dev *saadev, int dev)
 
 	/* Card "creation" */
 
-	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
-	if (chip == NULL) {
-		return -ENOMEM;
-	}
+	card->private_free = snd_saa7134_free;
+	chip = (snd_card_saa7134_t *) card->private_data;
 
 	spin_lock_init(&chip->lock);
 	spin_lock_init(&chip->mixer_lock);
@@ -1007,7 +1003,6 @@ int alsa_card_saa7134_create(struct saa7134_dev *saadev, int dev)
 
 __nodev:
 	snd_card_free(card);
-	kfree(chip);
 	return err;
 }
 
@@ -1024,6 +1019,8 @@ static int saa7134_alsa_init(void)
 	struct saa7134_dev *saadev = NULL;
 	struct list_head *list;
 
+	position = 0;
+
 	printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
 
 	list_for_each(list,&saa7134_devlist) {
-- 
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