[PATCH v2 50/79] ALSA: vx222: Allocate resources with device-managed APIs

[Takashi Iwai]

This patch converts the resource management in PCI vx222 driver with
devres as a clean up.  Each manual resource management is converted
with the corresponding devres helper, and the card object release is
managed now via card->private_free instead of a lowlevel snd_device.

This should give no user-visible functional changes.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/pci/vx222/vx222.c | 68 +++++++----------------------------------
 1 file changed, 11 insertions(+), 57 deletions(-)

diff --git a/sound/pci/vx222/vx222.c b/sound/pci/vx222/vx222.c
index 46a80ef1d481..f48cc20b9e8a 100644
--- a/sound/pci/vx222/vx222.c
+++ b/sound/pci/vx222/vx222.c
@@ -100,25 +100,6 @@ static const struct snd_vx_hardware vx222_mic_hw = {
 
 /*
  */
-static int snd_vx222_free(struct vx_core *chip)
-{
-	struct snd_vx222 *vx = to_vx222(chip);
-
-	if (chip->irq >= 0)
-		free_irq(chip->irq, (void*)chip);
-	if (vx->port[0])
-		pci_release_regions(vx->pci);
-	pci_disable_device(vx->pci);
-	return 0;
-}
-
-static int snd_vx222_dev_free(struct snd_device *device)
-{
-	struct vx_core *chip = device->device_data;
-	return snd_vx222_free(chip);
-}
-
-
 static int snd_vx222_create(struct snd_card *card, struct pci_dev *pci,
 			    const struct snd_vx_hardware *hw,
 			    struct snd_vx222 **rchip)
@@ -126,13 +107,10 @@ static int snd_vx222_create(struct snd_card *card, struct pci_dev *pci,
 	struct vx_core *chip;
 	struct snd_vx222 *vx;
 	int i, err;
-	static const struct snd_device_ops ops = {
-		.dev_free =	snd_vx222_dev_free,
-	};
 	const struct snd_vx_ops *vx_ops;
 
 	/* enable PCI device */
-	err = pci_enable_device(pci);
+	err = pcim_enable_device(pci);
 	if (err < 0)
 		return err;
 	pci_set_master(pci);
@@ -140,38 +118,26 @@ static int snd_vx222_create(struct snd_card *card, struct pci_dev *pci,
 	vx_ops = hw->type == VX_TYPE_BOARD ? &vx222_old_ops : &vx222_ops;
 	chip = snd_vx_create(card, hw, vx_ops,
 			     sizeof(struct snd_vx222) - sizeof(struct vx_core));
-	if (! chip) {
-		pci_disable_device(pci);
+	if (!chip)
 		return -ENOMEM;
-	}
 	vx = to_vx222(chip);
 	vx->pci = pci;
 
 	err = pci_request_regions(pci, CARD_NAME);
-	if (err < 0) {
-		snd_vx222_free(chip);
+	if (err < 0)
 		return err;
-	}
 	for (i = 0; i < 2; i++)
 		vx->port[i] = pci_resource_start(pci, i + 1);
 
-	if (request_threaded_irq(pci->irq, snd_vx_irq_handler,
-				 snd_vx_threaded_irq_handler, IRQF_SHARED,
-				 KBUILD_MODNAME, chip)) {
+	if (devm_request_threaded_irq(&pci->dev, pci->irq, snd_vx_irq_handler,
+				      snd_vx_threaded_irq_handler, IRQF_SHARED,
+				      KBUILD_MODNAME, chip)) {
 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
-		snd_vx222_free(chip);
 		return -EBUSY;
 	}
 	chip->irq = pci->irq;
 	card->sync_irq = chip->irq;
 
-	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
-	if (err < 0) {
-		snd_vx222_free(chip);
-		return err;
-	}
-
-	*rchip = vx;
 	return 0;
 }
 
@@ -192,8 +158,8 @@ static int snd_vx222_probe(struct pci_dev *pci,
 		return -ENOENT;
 	}
 
-	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
-			   0, &card);
+	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
+				0, &card);
 	if (err < 0)
 		return err;
 
@@ -210,10 +176,8 @@ static int snd_vx222_probe(struct pci_dev *pci,
 		break;
 	}
 	err = snd_vx222_create(card, pci, hw, &vx);
-	if (err < 0) {
-		snd_card_free(card);
+	if (err < 0)
 		return err;
-	}
 	card->private_data = vx;
 	vx->core.ibl.size = ibl[dev];
 
@@ -227,27 +191,18 @@ static int snd_vx222_probe(struct pci_dev *pci,
 #endif
 
 	err = snd_vx_setup_firmware(&vx->core);
-	if (err < 0) {
-		snd_card_free(card);
+	if (err < 0)
 		return err;
-	}
 
 	err = snd_card_register(card);
-	if (err < 0) {
-		snd_card_free(card);
+	if (err < 0)
 		return err;
-	}
 
 	pci_set_drvdata(pci, card);
 	dev++;
 	return 0;
 }
 
-static void snd_vx222_remove(struct pci_dev *pci)
-{
-	snd_card_free(pci_get_drvdata(pci));
-}
-
 #ifdef CONFIG_PM_SLEEP
 static int snd_vx222_suspend(struct device *dev)
 {
@@ -275,7 +230,6 @@ static struct pci_driver vx222_driver = {
 	.name = KBUILD_MODNAME,
 	.id_table = snd_vx222_ids,
 	.probe = snd_vx222_probe,
-	.remove = snd_vx222_remove,
 	.driver = {
 		.pm = SND_VX222_PM_OPS,
 	},
-- 
2.26.2