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ALSA: ad1816a: Allocate resources with device-managed APIs 

This patch converts the resource management in ISA ad1816a 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/20210715075941.23332-53-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:59:14 +02:00
parent c6e6bb5eab
commit d6fb54e878
2 changed files with 16 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
sound/isa/ad1816a/ad1816a.c
View File

@ -124,28 +124,24 @@ static int snd_card_ad1816a_probe(int dev, struct pnp_card_link *pcard,
struct snd_ad1816a *chip;
struct snd_opl3 *opl3;
error = snd_card_new(&pcard->card->dev,
index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_ad1816a), &card);
error = snd_devm_card_new(&pcard->card->dev,
index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_ad1816a), &card);
if (error < 0)
return error;
chip = card->private_data;
error = snd_card_ad1816a_pnp(dev, pcard, pid);
if (error) {
snd_card_free(card);
if (error)
return error;
}
error = snd_ad1816a_create(card, port[dev],
irq[dev],
dma1[dev],
dma2[dev],
chip);
if (error) {
snd_card_free(card);
if (error)
return error;
}
if (clockfreq[dev] >= 5000 && clockfreq[dev] <= 100000)
chip->clock_freq = clockfreq[dev];
@ -155,22 +151,16 @@ static int snd_card_ad1816a_probe(int dev, struct pnp_card_link *pcard,
card->shortname, chip->port, irq[dev], dma1[dev], dma2[dev]);
error = snd_ad1816a_pcm(chip, 0);
if (error < 0) {
snd_card_free(card);
if (error < 0)
return error;
}
error = snd_ad1816a_mixer(chip);
if (error < 0) {
snd_card_free(card);
if (error < 0)
return error;
}
error = snd_ad1816a_timer(chip, 0);
if (error < 0) {
snd_card_free(card);
if (error < 0)
return error;
}
if (mpu_port[dev] > 0) {
if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
@ -186,18 +176,14 @@ static int snd_card_ad1816a_probe(int dev, struct pnp_card_link *pcard,
printk(KERN_ERR PFX "no OPL device at 0x%lx-0x%lx.\n", fm_port[dev], fm_port[dev] + 2);
} else {
error = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
if (error < 0) {
snd_card_free(card);
if (error < 0)
return error;
}
}
}
error = snd_card_register(card);
if (error < 0) {
snd_card_free(card);
if (error < 0)
return error;
}
pnp_set_card_drvdata(pcard, card);
return 0;
}
@ -223,12 +209,6 @@ static int snd_ad1816a_pnp_detect(struct pnp_card_link *card,
return -ENODEV;
}
static void snd_ad1816a_pnp_remove(struct pnp_card_link *pcard)
{
snd_card_free(pnp_get_card_drvdata(pcard));
pnp_set_card_drvdata(pcard, NULL);
}
#ifdef CONFIG_PM
static int snd_ad1816a_pnp_suspend(struct pnp_card_link *pcard,
pm_message_t state)
@ -255,7 +235,6 @@ static struct pnp_card_driver ad1816a_pnpc_driver = {
.name = "ad1816a",
.id_table = snd_ad1816a_pnpids,
.probe = snd_ad1816a_pnp_detect,
.remove = snd_ad1816a_pnp_remove,
#ifdef CONFIG_PM
.suspend = snd_ad1816a_pnp_suspend,
.resume = snd_ad1816a_pnp_resume,

49
sound/isa/ad1816a/ad1816a_lib.c
View File

@ -541,28 +541,6 @@ static int snd_ad1816a_probe(struct snd_ad1816a *chip)
return 0;
}
static int snd_ad1816a_free(struct snd_ad1816a *chip)
{
release_and_free_resource(chip->res_port);
if (chip->irq >= 0)
free_irq(chip->irq, (void *) chip);
if (chip->dma1 >= 0) {
snd_dma_disable(chip->dma1);
free_dma(chip->dma1);
}
if (chip->dma2 >= 0) {
snd_dma_disable(chip->dma2);
free_dma(chip->dma2);
}
return 0;
}
static int snd_ad1816a_dev_free(struct snd_device *device)
{
struct snd_ad1816a *chip = device->device_data;
return snd_ad1816a_free(chip);
}
static const char *snd_ad1816a_chip_id(struct snd_ad1816a *chip)
{
switch (chip->hardware) {
@ -580,37 +558,31 @@ int snd_ad1816a_create(struct snd_card *card,
unsigned long port, int irq, int dma1, int dma2,
struct snd_ad1816a *chip)
{
static const struct snd_device_ops ops = {
.dev_free = snd_ad1816a_dev_free,
};
int error;
chip->irq = -1;
chip->dma1 = -1;
chip->dma2 = -1;
chip->res_port = request_region(port, 16, "AD1816A");
chip->res_port = devm_request_region(card->dev, port, 16, "AD1816A");
if (!chip->res_port) {
snd_printk(KERN_ERR "ad1816a: can't grab port 0x%lx\n", port);
snd_ad1816a_free(chip);
return -EBUSY;
}
if (request_irq(irq, snd_ad1816a_interrupt, 0, "AD1816A", (void *) chip)) {
if (devm_request_irq(card->dev, irq, snd_ad1816a_interrupt, 0,
"AD1816A", (void *) chip)) {
snd_printk(KERN_ERR "ad1816a: can't grab IRQ %d\n", irq);
snd_ad1816a_free(chip);
return -EBUSY;
}
chip->irq = irq;
card->sync_irq = chip->irq;
if (request_dma(dma1, "AD1816A - 1")) {
if (snd_devm_request_dma(card->dev, dma1, "AD1816A - 1")) {
snd_printk(KERN_ERR "ad1816a: can't grab DMA1 %d\n", dma1);
snd_ad1816a_free(chip);
return -EBUSY;
}
chip->dma1 = dma1;
if (request_dma(dma2, "AD1816A - 2")) {
if (snd_devm_request_dma(card->dev, dma2, "AD1816A - 2")) {
snd_printk(KERN_ERR "ad1816a: can't grab DMA2 %d\n", dma2);
snd_ad1816a_free(chip);
return -EBUSY;
}
chip->dma2 = dma2;
@ -620,20 +592,11 @@ int snd_ad1816a_create(struct snd_card *card,
spin_lock_init(&chip->lock);
error = snd_ad1816a_probe(chip);
if (error) {
snd_ad1816a_free(chip);
if (error)
return error;
}
snd_ad1816a_init(chip);
/* Register device */
error = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
if (error < 0) {
snd_ad1816a_free(chip);
return error;
}
return 0;
}