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ALSA: es18xx: Allocate resources with device-managed APIs

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This patch converts the resource management in ISA es18xx 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/20210715075941.23332-64-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:59:25 +02:00
parent 1bb11c1c7f
commit 34d6599bc1
1 changed files with 20 additions and 92 deletions
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112
sound/isa/es18xx.c
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@ -87,9 +87,6 @@
struct snd_es18xx {
unsigned long port; /* port of ESS chip */
unsigned long ctrl_port; /* Control port of ESS chip */
struct resource *res_port;
struct resource *res_mpu_port;
struct resource *res_ctrl_port;
int irq; /* IRQ number of ESS chip */
int dma1; /* DMA1 */
int dma2; /* DMA2 */
@ -1531,7 +1528,7 @@ static int snd_es18xx_initialize(struct snd_es18xx *chip,
return 0;
}
static int snd_es18xx_identify(struct snd_es18xx *chip)
static int snd_es18xx_identify(struct snd_card *card, struct snd_es18xx *chip)
{
int hi,lo;
@ -1573,8 +1570,8 @@ static int snd_es18xx_identify(struct snd_es18xx *chip)
udelay(10);
chip->ctrl_port += inb(chip->port + 0x05);
chip->res_ctrl_port = request_region(chip->ctrl_port, 8, "ES18xx - CTRL");
if (!chip->res_ctrl_port) {
if (!devm_request_region(card->dev, chip->ctrl_port, 8,
"ES18xx - CTRL")) {
snd_printk(KERN_ERR PFX "unable go grab port 0x%lx\n", chip->ctrl_port);
return -EBUSY;
}
@ -1601,11 +1598,12 @@ static int snd_es18xx_identify(struct snd_es18xx *chip)
return 0;
}
static int snd_es18xx_probe(struct snd_es18xx *chip,
static int snd_es18xx_probe(struct snd_card *card,
struct snd_es18xx *chip,
unsigned long mpu_port,
unsigned long fm_port)
{
if (snd_es18xx_identify(chip) < 0) {
if (snd_es18xx_identify(card, chip) < 0) {
snd_printk(KERN_ERR PFX "[0x%lx] ESS chip not found\n", chip->port);
return -ENODEV;
}
@ -1722,31 +1720,6 @@ static int snd_es18xx_resume(struct snd_card *card)
}
#endif /* CONFIG_PM */
static int snd_es18xx_free(struct snd_card *card)
{
struct snd_es18xx *chip = card->private_data;
release_and_free_resource(chip->res_port);
release_and_free_resource(chip->res_ctrl_port);
release_and_free_resource(chip->res_mpu_port);
if (chip->irq >= 0)
free_irq(chip->irq, (void *) card);
if (chip->dma1 >= 0) {
disable_dma(chip->dma1);
free_dma(chip->dma1);
}
if (chip->dma2 >= 0 && chip->dma1 != chip->dma2) {
disable_dma(chip->dma2);
free_dma(chip->dma2);
}
return 0;
}
static int snd_es18xx_dev_free(struct snd_device *device)
{
return snd_es18xx_free(device->card);
}
static int snd_es18xx_new_device(struct snd_card *card,
unsigned long port,
unsigned long mpu_port,
@ -1754,10 +1727,6 @@ static int snd_es18xx_new_device(struct snd_card *card,
int irq, int dma1, int dma2)
{
struct snd_es18xx *chip = card->private_data;
static const struct snd_device_ops ops = {
.dev_free = snd_es18xx_dev_free,
};
int err;
spin_lock_init(&chip->reg_lock);
spin_lock_init(&chip->mixer_lock);
@ -1768,45 +1737,34 @@ static int snd_es18xx_new_device(struct snd_card *card,
chip->audio2_vol = 0x00;
chip->active = 0;
chip->res_port = request_region(port, 16, "ES18xx");
if (chip->res_port == NULL) {
snd_es18xx_free(card);
if (!devm_request_region(card->dev, port, 16, "ES18xx")) {
snd_printk(KERN_ERR PFX "unable to grap ports 0x%lx-0x%lx\n", port, port + 16 - 1);
return -EBUSY;
}
if (request_irq(irq, snd_es18xx_interrupt, 0, "ES18xx",
(void *) card)) {
snd_es18xx_free(card);
if (devm_request_irq(card->dev, irq, snd_es18xx_interrupt, 0, "ES18xx",
(void *) card)) {
snd_printk(KERN_ERR PFX "unable to grap IRQ %d\n", irq);
return -EBUSY;
}
chip->irq = irq;
card->sync_irq = chip->irq;
if (request_dma(dma1, "ES18xx DMA 1")) {
snd_es18xx_free(card);
if (snd_devm_request_dma(card->dev, dma1, "ES18xx DMA 1")) {
snd_printk(KERN_ERR PFX "unable to grap DMA1 %d\n", dma1);
return -EBUSY;
}
chip->dma1 = dma1;
if (dma2 != dma1 && request_dma(dma2, "ES18xx DMA 2")) {
snd_es18xx_free(card);
if (dma2 != dma1 &&
snd_devm_request_dma(card->dev, dma2, "ES18xx DMA 2")) {
snd_printk(KERN_ERR PFX "unable to grap DMA2 %d\n", dma2);
return -EBUSY;
}
chip->dma2 = dma2;
if (snd_es18xx_probe(chip, mpu_port, fm_port) < 0) {
snd_es18xx_free(card);
if (snd_es18xx_probe(card, chip, mpu_port, fm_port) < 0)
return -ENODEV;
}
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
if (err < 0) {
snd_es18xx_free(card);
return err;
}
return 0;
}
@ -2088,8 +2046,8 @@ static int snd_audiodrive_pnpc(int dev, struct snd_es18xx *chip,
static int snd_es18xx_card_new(struct device *pdev, int dev,
struct snd_card **cardp)
{
return snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_es18xx), cardp);
return snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_es18xx), cardp);
}
static int snd_audiodrive_probe(struct snd_card *card, int dev)
@ -2164,10 +2122,8 @@ static int snd_es18xx_isa_probe1(int dev, struct device *devptr)
if (err < 0)
return err;
err = snd_audiodrive_probe(card, dev);
if (err < 0) {
snd_card_free(card);
if (err < 0)
return err;
}
dev_set_drvdata(devptr, card);
return 0;
}
@ -2215,12 +2171,6 @@ static int snd_es18xx_isa_probe(struct device *pdev, unsigned int dev)
}
}
static void snd_es18xx_isa_remove(struct device *devptr,
unsigned int dev)
{
snd_card_free(dev_get_drvdata(devptr));
}
#ifdef CONFIG_PM
static int snd_es18xx_isa_suspend(struct device *dev, unsigned int n,
pm_message_t state)
@ -2239,7 +2189,6 @@ static int snd_es18xx_isa_resume(struct device *dev, unsigned int n)
static struct isa_driver snd_es18xx_isa_driver = {
.match = snd_es18xx_isa_match,
.probe = snd_es18xx_isa_probe,
.remove = snd_es18xx_isa_remove,
#ifdef CONFIG_PM
.suspend = snd_es18xx_isa_suspend,
.resume = snd_es18xx_isa_resume,
@ -2271,25 +2220,16 @@ static int snd_audiodrive_pnp_detect(struct pnp_dev *pdev,
if (err < 0)
return err;
err = snd_audiodrive_pnp(dev, card->private_data, pdev);
if (err < 0) {
snd_card_free(card);
if (err < 0)
return err;
}
err = snd_audiodrive_probe(card, dev);
if (err < 0) {
snd_card_free(card);
if (err < 0)
return err;
}
pnp_set_drvdata(pdev, card);
dev++;
return 0;
}
static void snd_audiodrive_pnp_remove(struct pnp_dev *pdev)
{
snd_card_free(pnp_get_drvdata(pdev));
}
#ifdef CONFIG_PM
static int snd_audiodrive_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
{
@ -2305,7 +2245,6 @@ static struct pnp_driver es18xx_pnp_driver = {
.name = "es18xx-pnpbios",
.id_table = snd_audiodrive_pnpbiosids,
.probe = snd_audiodrive_pnp_detect,
.remove = snd_audiodrive_pnp_remove,
#ifdef CONFIG_PM
.suspend = snd_audiodrive_pnp_suspend,
.resume = snd_audiodrive_pnp_resume,
@ -2331,27 +2270,17 @@ static int snd_audiodrive_pnpc_detect(struct pnp_card_link *pcard,
return res;
res = snd_audiodrive_pnpc(dev, card->private_data, pcard, pid);
if (res < 0) {
snd_card_free(card);
if (res < 0)
return res;
}
res = snd_audiodrive_probe(card, dev);
if (res < 0) {
snd_card_free(card);
if (res < 0)
return res;
}
pnp_set_card_drvdata(pcard, card);
dev++;
return 0;
}
static void snd_audiodrive_pnpc_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_audiodrive_pnpc_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
@ -2370,7 +2299,6 @@ static struct pnp_card_driver es18xx_pnpc_driver = {
.name = "es18xx",
.id_table = snd_audiodrive_pnpids,
.probe = snd_audiodrive_pnpc_detect,
.remove = snd_audiodrive_pnpc_remove,
#ifdef CONFIG_PM
.suspend = snd_audiodrive_pnpc_suspend,
.resume = snd_audiodrive_pnpc_resume,