ALSA: es1688: allocate snd_es1688 structure as a part of snd_card structure

Allocate the snd_es1688 during the snd_card allocation.
This allows to remove the card pointer from the snd_es1688 structure.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 27 insertions, 40 deletions

diff --git a/sound/isa/es1688/es1688.c b/sound/isa/es1688/es1688.c
index 07df201ed8fa..281679493fb4 100644
--- a/sound/isa/es1688/es1688.c
+++ b/sound/isa/es1688/es1688.c
@@ -79,8 +79,8 @@ static int __devinit snd_es1688_match(struct device *dev, unsigned int n)
         return enable[n];
 }
 
-static int __devinit snd_es1688_legacy_create(struct snd_card *card, 
-                struct device *dev, unsigned int n, struct snd_es1688 **rchip)
+static int __devinit snd_es1688_legacy_create(struct snd_card *card,
+                struct snd_es1688 *chip, struct device *dev, unsigned int n)
 {
         static long possible_ports[] = {0x220, 0x240, 0x260};
         static int possible_irqs[] = {5, 9, 10, 7, -1};
@@ -104,14 +104,14 @@ static int __devinit snd_es1688_legacy_create(struct snd_card *card,
         }
 
         if (port[n] != SNDRV_AUTO_PORT)
-                return snd_es1688_create(card, port[n], mpu_port[n], irq[n],
-                                mpu_irq[n], dma8[n], ES1688_HW_AUTO, rchip);
+                return snd_es1688_create(card, chip, port[n], mpu_port[n],
+                                irq[n], mpu_irq[n], dma8[n], ES1688_HW_AUTO);
 
         i = 0;
         do {
                 port[n] = possible_ports[i];
-                error = snd_es1688_create(card, port[n], mpu_port[n], irq[n],
-                                mpu_irq[n], dma8[n], ES1688_HW_AUTO, rchip);
+                error = snd_es1688_create(card, chip, port[n], mpu_port[n],
+                                irq[n], mpu_irq[n], dma8[n], ES1688_HW_AUTO);
         } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
 
         return error;
@@ -125,19 +125,22 @@ static int __devinit snd_es1688_probe(struct device *dev, unsigned int n)
         struct snd_pcm *pcm;
         int error;
 
-        error = snd_card_create(index[n], id[n], THIS_MODULE, 0, &card);
+        error = snd_card_create(index[n], id[n], THIS_MODULE,
+                                sizeof(struct snd_es1688), &card);
         if (error < 0)
                 return error;
 
-        error = snd_es1688_legacy_create(card, dev, n, &chip);
+        chip = card->private_data;
+
+        error = snd_es1688_legacy_create(card, chip, dev, n);
         if (error < 0)
                 goto out;
 
-        error = snd_es1688_pcm(chip, 0, &pcm);
+        error = snd_es1688_pcm(card, chip, 0, &pcm);
         if (error < 0)
                 goto out;
 
-        error = snd_es1688_mixer(chip);
+        error = snd_es1688_mixer(card, chip);
         if (error < 0)
                 goto out;
 
diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
index c76bb00c9d15..fdd440417bf0 100644
--- a/sound/isa/es1688/es1688_lib.c
+++ b/sound/isa/es1688/es1688_lib.c
@@ -620,7 +620,6 @@ static int snd_es1688_free(struct snd_es1688 *chip)
                 disable_dma(chip->dma8);
                 free_dma(chip->dma8);
         }
-        kfree(chip);
         return 0;
 }
 
@@ -638,23 +637,20 @@ static const char *snd_es1688_chip_id(struct snd_es1688 *chip)
 }
 
 int snd_es1688_create(struct snd_card *card,
+                      struct snd_es1688 *chip,
                       unsigned long port,
                       unsigned long mpu_port,
                       int irq,
                       int mpu_irq,
                       int dma8,
-                      unsigned short hardware,
-                      struct snd_es1688 **rchip)
+                      unsigned short hardware)
 {
         static struct snd_device_ops ops = {
                 .dev_free =     snd_es1688_dev_free,
         };
                                 
-        struct snd_es1688 *chip;
         int err;
 
-        *rchip = NULL;
-        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
         if (chip == NULL)
                 return -ENOMEM;
         chip->irq = -1;
@@ -662,25 +658,21 @@ int snd_es1688_create(struct snd_card *card,
         
         if ((chip->res_port = request_region(port + 4, 12, "ES1688")) == NULL) {
                 snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
-                snd_es1688_free(chip);
                 return -EBUSY;
         }
         if (request_irq(irq, snd_es1688_interrupt, IRQF_DISABLED, "ES1688", (void *) chip)) {
                 snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
-                snd_es1688_free(chip);
                 return -EBUSY;
         }
         chip->irq = irq;
         if (request_dma(dma8, "ES1688")) {
                 snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
-                snd_es1688_free(chip);
                 return -EBUSY;
         }
         chip->dma8 = dma8;
 
         spin_lock_init(&chip->reg_lock);
         spin_lock_init(&chip->mixer_lock);
-        chip->card = card;
         chip->port = port;
         mpu_port &= ~0x000f;
         if (mpu_port < 0x300 || mpu_port > 0x330)
@@ -689,23 +681,16 @@ int snd_es1688_create(struct snd_card *card,
         chip->mpu_irq = mpu_irq;
         chip->hardware = hardware;
 
-        if ((err = snd_es1688_probe(chip)) < 0) {
-                snd_es1688_free(chip);
+        err = snd_es1688_probe(chip);
+        if (err < 0)
                 return err;
-        }
-        if ((err = snd_es1688_init(chip, 1)) < 0) {
-                snd_es1688_free(chip);
-                return err;
-        }
 
-        /* Register device */
-        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
-                snd_es1688_free(chip);
+        err = snd_es1688_init(chip, 1);
+        if (err < 0)
                 return err;
-        }
 
-        *rchip = chip;
-        return 0;
+        /* Register device */
+        return snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 }
 
 static struct snd_pcm_ops snd_es1688_playback_ops = {
@@ -730,12 +715,14 @@ static struct snd_pcm_ops snd_es1688_capture_ops = {
         .pointer =              snd_es1688_capture_pointer,
 };
 
-int snd_es1688_pcm(struct snd_es1688 * chip, int device, struct snd_pcm ** rpcm)
+int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip,
+                   int device, struct snd_pcm **rpcm)
 {
         struct snd_pcm *pcm;
         int err;
 
-        if ((err = snd_pcm_new(chip->card, "ESx688", device, 1, 1, &pcm)) < 0)
+        err = snd_pcm_new(card, "ESx688", device, 1, 1, &pcm);
+        if (err < 0)
                 return err;
 
         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1688_playback_ops);
@@ -1009,18 +996,15 @@ static unsigned char snd_es1688_init_table[][2] = {
         { ES1688_REC_DEV, 0x17 }
 };
                                         
-int snd_es1688_mixer(struct snd_es1688 *chip)
+int snd_es1688_mixer(struct snd_card *card, struct snd_es1688 *chip)
 {
-        struct snd_card *card;
         unsigned int idx;
         int err;
         unsigned char reg, val;
 
-        if (snd_BUG_ON(!chip || !chip->card))
+        if (snd_BUG_ON(!chip || !card))
                 return -EINVAL;
 
-        card = chip->card;
-
         strcpy(card->mixername, snd_es1688_chip_id(chip));
 
         for (idx = 0; idx < ARRAY_SIZE(snd_es1688_controls); idx++) {