ALSA: atiixp: Allocate resources with device-managed APIs

Like the previous patch, this patch converts the resource allocations
with device-managed API calls, so that we can reduce resource-free
calls.

The atiixp drivers are simpler than intel8x0, and even the irq can be
allocated with devres.

The end result is a good amount of code reduction.

Link: https://lore.kernel.org/r/20210715075941.23332-7-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 20 insertions, 72 deletions

diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index 9739c3a82777..178dce8ef1e9 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -1159,87 +1159,44 @@ static void snd_atiixp_proc_init(struct atiixp_modem *chip)
  * destructor
  */
 
-static int snd_atiixp_free(struct atiixp_modem *chip)
+static void snd_atiixp_free(struct snd_card *card)
 {
-	if (chip->irq < 0)
-		goto __hw_end;
-	snd_atiixp_chip_stop(chip);
-
-      __hw_end:
-	if (chip->irq >= 0)
-		free_irq(chip->irq, chip);
-	iounmap(chip->remap_addr);
-	pci_release_regions(chip->pci);
-	pci_disable_device(chip->pci);
-	kfree(chip);
-	return 0;
-}
-
-static int snd_atiixp_dev_free(struct snd_device *device)
-{
-	struct atiixp_modem *chip = device->device_data;
-	return snd_atiixp_free(chip);
+	snd_atiixp_chip_stop(card->private_data);
 }
 
 /*
  * constructor for chip instance
  */
-static int snd_atiixp_create(struct snd_card *card,
-			     struct pci_dev *pci,
-			     struct atiixp_modem **r_chip)
+static int snd_atiixp_init(struct snd_card *card, struct pci_dev *pci)
 {
-	static const struct snd_device_ops ops = {
-		.dev_free =	snd_atiixp_dev_free,
-	};
-	struct atiixp_modem *chip;
+	struct atiixp_modem *chip = card->private_data;
 	int err;
 
-	err = pci_enable_device(pci);
+	err = pcim_enable_device(pci);
 	if (err < 0)
 		return err;
 
-	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-	if (chip == NULL) {
-		pci_disable_device(pci);
-		return -ENOMEM;
-	}
-
 	spin_lock_init(&chip->reg_lock);
 	mutex_init(&chip->open_mutex);
 	chip->card = card;
 	chip->pci = pci;
 	chip->irq = -1;
-	err = pci_request_regions(pci, "ATI IXP MC97");
-	if (err < 0) {
-		kfree(chip);
-		pci_disable_device(pci);
+	err = pcim_iomap_regions(pci, 1 << 0, "ATI IXP MC97");
+	if (err < 0)
 		return err;
-	}
 	chip->addr = pci_resource_start(pci, 0);
-	chip->remap_addr = pci_ioremap_bar(pci, 0);
-	if (chip->remap_addr == NULL) {
-		dev_err(card->dev, "AC'97 space ioremap problem\n");
-		snd_atiixp_free(chip);
-		return -EIO;
-	}
+	chip->remap_addr = pcim_iomap_table(pci)[0];
 
-	if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED,
-			KBUILD_MODNAME, chip)) {
+	if (devm_request_irq(&pci->dev, pci->irq, snd_atiixp_interrupt,
+			     IRQF_SHARED, KBUILD_MODNAME, chip)) {
 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
-		snd_atiixp_free(chip);
 		return -EBUSY;
 	}
 	chip->irq = pci->irq;
 	card->sync_irq = chip->irq;
+	card->private_free = snd_atiixp_free;
 	pci_set_master(pci);
 
-	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
-	if (err < 0) {
-		snd_atiixp_free(chip);
-		return err;
-	}
-
-	*r_chip = chip;
 	return 0;
 }
 
@@ -1251,28 +1208,29 @@ static int snd_atiixp_probe(struct pci_dev *pci,
 	struct atiixp_modem *chip;
 	int err;
 
-	err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
+	err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE,
+				sizeof(*chip), &card);
 	if (err < 0)
 		return err;
+	chip = card->private_data;
 
 	strcpy(card->driver, "ATIIXP-MODEM");
 	strcpy(card->shortname, "ATI IXP Modem");
-	err = snd_atiixp_create(card, pci, &chip);
+	err = snd_atiixp_init(card, pci);
 	if (err < 0)
-		goto __error;
-	card->private_data = chip;
+		return err;
 
 	err = snd_atiixp_aclink_reset(chip);
 	if (err < 0)
-		goto __error;
+		return err;
 
 	err = snd_atiixp_mixer_new(chip, ac97_clock);
 	if (err < 0)
-		goto __error;
+		return err;
 
 	err = snd_atiixp_pcm_new(chip);
 	if (err < 0)
-		goto __error;
+		return err;
 	
 	snd_atiixp_proc_init(chip);
 
@@ -1283,26 +1241,16 @@ static int snd_atiixp_probe(struct pci_dev *pci,
 
 	err = snd_card_register(card);
 	if (err < 0)
-		goto __error;
+		return err;
 
 	pci_set_drvdata(pci, card);
 	return 0;
-
- __error:
-	snd_card_free(card);
-	return err;
-}
-
-static void snd_atiixp_remove(struct pci_dev *pci)
-{
-	snd_card_free(pci_get_drvdata(pci));
 }
 
 static struct pci_driver atiixp_modem_driver = {
 	.name = KBUILD_MODNAME,
 	.id_table = snd_atiixp_ids,
 	.probe = snd_atiixp_probe,
-	.remove = snd_atiixp_remove,
 	.driver = {
 		.pm = SND_ATIIXP_PM_OPS,
 	},