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ALSA: es1688: Allocate resources with device-managed APIs

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This patch converts the resource management in ISA es1688 driver with
devres as a clean up.  Each manual resource management is converted
with the corresponding devres helper.  The remove callback became
superfluous and dropped.

This should give no user-visible functional changes.

Link: https://lore.kernel.org/r/20210715075941.23332-63-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:59:24 +02:00
parent 4287864eb0
commit 1bb11c1c7f
3 changed files with 18 additions and 45 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
include/sound/es1688.h
View file

@ -18,7 +18,6 @@
struct snd_es1688 {
unsigned long port; /* port of ESS chip */
struct resource *res_port;
unsigned long mpu_port; /* MPU-401 port of ESS chip */
int irq; /* IRQ number of ESS chip */
int mpu_irq; /* MPU IRQ */

33
sound/isa/es1688/es1688.c
View file

@ -166,36 +166,27 @@ static int snd_es1688_isa_probe(struct device *dev, unsigned int n)
struct snd_card *card;
int error;
error = snd_card_new(dev, index[n], id[n], THIS_MODULE,
sizeof(struct snd_es1688), &card);
error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE,
sizeof(struct snd_es1688), &card);
if (error < 0)
return error;
error = snd_es1688_legacy_create(card, dev, n);
if (error < 0)
goto out;
return error;
error = snd_es1688_probe(card, n);
if (error < 0)
goto out;
return error;
dev_set_drvdata(dev, card);
return 0;
out:
snd_card_free(card);
return error;
}
static void snd_es1688_isa_remove(struct device *dev, unsigned int n)
{
snd_card_free(dev_get_drvdata(dev));
}
static struct isa_driver snd_es1688_driver = {
.match = snd_es1688_match,
.probe = snd_es1688_isa_probe,
.remove = snd_es1688_isa_remove,
#if 0 /* FIXME */
.suspend = snd_es1688_suspend,
.resume = snd_es1688_resume,
@ -249,22 +240,18 @@ static int snd_es968_pnp_detect(struct pnp_card_link *pcard,
if (dev == SNDRV_CARDS)
return -ENODEV;
error = snd_card_new(&pcard->card->dev,
index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_es1688), &card);
error = snd_devm_card_new(&pcard->card->dev,
index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_es1688), &card);
if (error < 0)
return error;
error = snd_card_es968_pnp(card, dev, pcard, pid);
if (error < 0) {
snd_card_free(card);
if (error < 0)
return error;
}
error = snd_es1688_probe(card, dev);
if (error < 0) {
snd_card_free(card);
if (error < 0)
return error;
}
pnp_set_card_drvdata(pcard, card);
snd_es968_pnp_is_probed = 1;
return 0;
@ -272,8 +259,6 @@ static int snd_es968_pnp_detect(struct pnp_card_link *pcard,
static void snd_es968_pnp_remove(struct pnp_card_link *pcard)
{
snd_card_free(pnp_get_card_drvdata(pcard));
pnp_set_card_drvdata(pcard, NULL);
snd_es968_pnp_is_probed = 0;
}

29
sound/isa/es1688/es1688_lib.c
View file

@ -580,13 +580,6 @@ static int snd_es1688_free(struct snd_es1688 *chip)
{
if (chip->hardware != ES1688_HW_UNDEF)
snd_es1688_init(chip, 0);
release_and_free_resource(chip->res_port);
if (chip->irq >= 0)
free_irq(chip->irq, (void *) chip);
if (chip->dma8 >= 0) {
disable_dma(chip->dma8);
free_dma(chip->dma8);
}
return 0;
}
@ -624,26 +617,25 @@ int snd_es1688_create(struct snd_card *card,
chip->dma8 = -1;
chip->hardware = ES1688_HW_UNDEF;
chip->res_port = request_region(port + 4, 12, "ES1688");
if (chip->res_port == NULL) {
if (!devm_request_region(card->dev, port + 4, 12, "ES1688")) {
snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
err = -EBUSY;
goto exit;
return -EBUSY;
}
err = request_irq(irq, snd_es1688_interrupt, 0, "ES1688", (void *) chip);
err = devm_request_irq(card->dev, irq, snd_es1688_interrupt, 0,
"ES1688", (void *) chip);
if (err < 0) {
snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
goto exit;
return err;
}
chip->irq = irq;
card->sync_irq = chip->irq;
err = request_dma(dma8, "ES1688");
err = snd_devm_request_dma(card->dev, dma8, "ES1688");
if (err < 0) {
snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
goto exit;
return err;
}
chip->dma8 = dma8;
@ -659,17 +651,14 @@ int snd_es1688_create(struct snd_card *card,
err = snd_es1688_probe(chip);
if (err < 0)
goto exit;
return err;
err = snd_es1688_init(chip, 1);
if (err < 0)
goto exit;
return err;
/* Register device */
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
exit:
if (err)
snd_es1688_free(chip);
return err;
}