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ALSA: bt87x: Allocate resources with device-managed APIs

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This patch converts the resource management in PCI bt87x 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.

Link: https://lore.kernel.org/r/20210715075941.23332-13-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:58:34 +02:00
parent 8c5823ef31
commit 9e80ed64a0
1 changed files with 24 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
sound/pci/bt87x.c
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@ -656,23 +656,11 @@ static const struct snd_kcontrol_new snd_bt87x_capture_source = {
.put = snd_bt87x_capture_source_put,
};
static int snd_bt87x_free(struct snd_bt87x *chip)
static void snd_bt87x_free(struct snd_card *card)
{
if (chip->mmio)
snd_bt87x_stop(chip);
if (chip->irq >= 0)
free_irq(chip->irq, chip);
iounmap(chip->mmio);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
return 0;
}
struct snd_bt87x *chip = card->private_data;
static int snd_bt87x_dev_free(struct snd_device *device)
{
struct snd_bt87x *chip = device->device_data;
return snd_bt87x_free(chip);
snd_bt87x_stop(chip);
}
static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
@ -694,43 +682,24 @@ static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
}
static int snd_bt87x_create(struct snd_card *card,
struct pci_dev *pci,
struct snd_bt87x **rchip)
struct pci_dev *pci)
{
struct snd_bt87x *chip;
struct snd_bt87x *chip = card->private_data;
int err;
static const struct snd_device_ops ops = {
.dev_free = snd_bt87x_dev_free
};
*rchip = NULL;
err = pci_enable_device(pci);
err = pcim_enable_device(pci);
if (err < 0)
return err;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (!chip) {
pci_disable_device(pci);
return -ENOMEM;
}
chip->card = card;
chip->pci = pci;
chip->irq = -1;
spin_lock_init(&chip->reg_lock);
err = pci_request_regions(pci, "Bt87x audio");
if (err < 0) {
kfree(chip);
pci_disable_device(pci);
err = pcim_iomap_regions(pci, 1 << 0, "Bt87x audio");
if (err < 0)
return err;
}
chip->mmio = pci_ioremap_bar(pci, 0);
if (!chip->mmio) {
dev_err(card->dev, "cannot remap io memory\n");
err = -ENOMEM;
goto fail;
}
chip->mmio = pcim_iomap_table(pci)[0];
chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
@ -739,26 +708,18 @@ static int snd_bt87x_create(struct snd_card *card,
snd_bt87x_writel(chip, REG_INT_MASK, 0);
snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip);
err = devm_request_irq(&pci->dev, pci->irq, snd_bt87x_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip);
if (err < 0) {
dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
goto fail;
return err;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
card->private_free = snd_bt87x_free;
pci_set_master(pci);
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
if (err < 0)
goto fail;
*rchip = chip;
return 0;
fail:
snd_bt87x_free(chip);
return err;
}
#define BT_DEVICE(chip, subvend, subdev, id) \
@ -868,14 +829,15 @@ static int snd_bt87x_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,
sizeof(*chip), &card);
if (err < 0)
return err;
chip = card->private_data;
err = snd_bt87x_create(card, pci, &chip);
err = snd_bt87x_create(card, pci);
if (err < 0)
goto _error;
return err;
memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
@ -887,24 +849,24 @@ static int snd_bt87x_probe(struct pci_dev *pci,
err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
if (err < 0)
goto _error;
return err;
}
if (!chip->board.no_analog) {
err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
if (err < 0)
goto _error;
return err;
err = snd_ctl_add(card, snd_ctl_new1(
&snd_bt87x_capture_volume, chip));
if (err < 0)
goto _error;
return err;
err = snd_ctl_add(card, snd_ctl_new1(
&snd_bt87x_capture_boost, chip));
if (err < 0)
goto _error;
return err;
err = snd_ctl_add(card, snd_ctl_new1(
&snd_bt87x_capture_source, chip));
if (err < 0)
goto _error;
return err;
}
dev_info(card->dev, "bt87x%d: Using board %d, %sanalog, %sdigital "
"(rate %d Hz)\n", dev, boardid,
@ -920,20 +882,11 @@ static int snd_bt87x_probe(struct pci_dev *pci,
err = snd_card_register(card);
if (err < 0)
goto _error;
return err;
pci_set_drvdata(pci, card);
++dev;
return 0;
_error:
snd_card_free(card);
return err;
}
static void snd_bt87x_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
}
/* default entries for all Bt87x cards - it's not exported */
@ -948,7 +901,6 @@ static struct pci_driver driver = {
.name = KBUILD_MODNAME,
.id_table = snd_bt87x_ids,
.probe = snd_bt87x_probe,
.remove = snd_bt87x_remove,
};
static int __init alsa_card_bt87x_init(void)