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ALSA: wavefront: Allocate resources with device-managed APIs 

This patch converts the resource management in ISA wavefront 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/20210715075941.23332-72-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:59:33 +02:00
parent bddc2ef132
commit f082b1ad39
1 changed files with 9 additions and 37 deletions
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46
sound/isa/wavefront/wavefront.c
View File

@ -308,18 +308,6 @@ static struct snd_rawmidi *snd_wavefront_new_midi(struct snd_card *card,
return rmidi;
}
static void
snd_wavefront_free(struct snd_card *card)
{
snd_wavefront_card_t *acard = (snd_wavefront_card_t *)card->private_data;
if (acard) {
release_and_free_resource(acard->wavefront.res_base);
if (acard->wavefront.irq > 0)
free_irq(acard->wavefront.irq, (void *)acard);
}
}
static int snd_wavefront_card_new(struct device *pdev, int dev,
struct snd_card **cardp)
{
@ -327,8 +315,8 @@ static int snd_wavefront_card_new(struct device *pdev, int dev,
snd_wavefront_card_t *acard;
int err;
err = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
sizeof(snd_wavefront_card_t), &card);
err = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,
sizeof(snd_wavefront_card_t), &card);
if (err < 0)
return err;
@ -339,7 +327,6 @@ static int snd_wavefront_card_new(struct device *pdev, int dev,
spin_lock_init(&acard->wavefront.midi.open);
spin_lock_init(&acard->wavefront.midi.virtual);
acard->wavefront.card = card;
card->private_free = snd_wavefront_free;
*cardp = card;
return 0;
@ -394,15 +381,17 @@ snd_wavefront_probe (struct snd_card *card, int dev)
/* ------- ICS2115 Wavetable synth ------- */
acard->wavefront.res_base = request_region(ics2115_port[dev], 16,
"ICS2115");
acard->wavefront.res_base =
devm_request_region(card->dev, ics2115_port[dev], 16,
"ICS2115");
if (acard->wavefront.res_base == NULL) {
snd_printk(KERN_ERR "unable to grab ICS2115 i/o region 0x%lx-0x%lx\n",
ics2115_port[dev], ics2115_port[dev] + 16 - 1);
return -EBUSY;
}
if (request_irq(ics2115_irq[dev], snd_wavefront_ics2115_interrupt,
0, "ICS2115", acard)) {
if (devm_request_irq(card->dev, ics2115_irq[dev],
snd_wavefront_ics2115_interrupt,
0, "ICS2115", acard)) {
snd_printk(KERN_ERR "unable to use ICS2115 IRQ %d\n", ics2115_irq[dev]);
return -EBUSY;
}
@ -556,27 +545,18 @@ static int snd_wavefront_isa_probe(struct device *pdev,
if (err < 0)
return err;
err = snd_wavefront_probe(card, dev);
if (err < 0) {
snd_card_free(card);
if (err < 0)
return err;
}
dev_set_drvdata(pdev, card);
return 0;
}
static void snd_wavefront_isa_remove(struct device *devptr,
unsigned int dev)
{
snd_card_free(dev_get_drvdata(devptr));
}
#define DEV_NAME "wavefront"
static struct isa_driver snd_wavefront_driver = {
.match = snd_wavefront_isa_match,
.probe = snd_wavefront_isa_probe,
.remove = snd_wavefront_isa_remove,
/* FIXME: suspend, resume */
.driver = {
.name = DEV_NAME
@ -606,7 +586,6 @@ static int snd_wavefront_pnp_detect(struct pnp_card_link *pcard,
if (snd_wavefront_pnp (dev, card->private_data, pcard, pid) < 0) {
if (cs4232_pcm_port[dev] == SNDRV_AUTO_PORT) {
snd_printk (KERN_ERR "isapnp detection failed\n");
snd_card_free (card);
return -ENODEV;
}
}
@ -620,18 +599,11 @@ static int snd_wavefront_pnp_detect(struct pnp_card_link *pcard,
return 0;
}
static void snd_wavefront_pnp_remove(struct pnp_card_link *pcard)
{
snd_card_free(pnp_get_card_drvdata(pcard));
pnp_set_card_drvdata(pcard, NULL);
}
static struct pnp_card_driver wavefront_pnpc_driver = {
.flags = PNP_DRIVER_RES_DISABLE,
.name = "wavefront",
.id_table = snd_wavefront_pnpids,
.probe = snd_wavefront_pnp_detect,
.remove = snd_wavefront_pnp_remove,
/* FIXME: suspend,resume */
};