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ALSA: mtpav: Allocate resources with device-managed APIs

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This patch converts the resource management in mtpav driver with
devres as a clean up.  Each manual resource management is converted
with the corresponding devres helper now.

This should give no user-visible functional changes.

Link: https://lore.kernel.org/r/20210715075941.23332-75-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:59:36 +02:00
parent ed539fc342
commit aa92050f10
1 changed files with 9 additions and 21 deletions
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30
sound/drivers/mtpav.c
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@ -566,13 +566,15 @@ static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
*/
static int snd_mtpav_get_ISA(struct mtpav *mcard)
{
mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI");
mcard->res_port = devm_request_region(mcard->card->dev, port, 3,
"MotuMTPAV MIDI");
if (!mcard->res_port) {
snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
return -EBUSY;
}
mcard->port = port;
if (request_irq(irq, snd_mtpav_irqh, 0, "MOTU MTPAV", mcard)) {
if (devm_request_irq(mcard->card->dev, irq, snd_mtpav_irqh, 0,
"MOTU MTPAV", mcard)) {
snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
return -EBUSY;
}
@ -667,9 +669,6 @@ static void snd_mtpav_free(struct snd_card *card)
if (crd->istimer > 0)
snd_mtpav_remove_output_timer(crd);
spin_unlock_irqrestore(&crd->spinlock, flags);
if (crd->irq >= 0)
free_irq(crd->irq, (void *)crd);
release_and_free_resource(crd->res_port);
}
/*
@ -680,8 +679,8 @@ static int snd_mtpav_probe(struct platform_device *dev)
int err;
struct mtpav *mtp_card;
err = snd_card_new(&dev->dev, index, id, THIS_MODULE,
sizeof(*mtp_card), &card);
err = snd_devm_card_new(&dev->dev, index, id, THIS_MODULE,
sizeof(*mtp_card), &card);
if (err < 0)
return err;
@ -698,13 +697,13 @@ static int snd_mtpav_probe(struct platform_device *dev)
err = snd_mtpav_get_RAWMIDI(mtp_card);
if (err < 0)
goto __error;
return err;
mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
err = snd_mtpav_get_ISA(mtp_card);
if (err < 0)
goto __error;
return err;
strcpy(card->driver, "MTPAV");
strcpy(card->shortname, "MTPAV on parallel port");
@ -715,28 +714,17 @@ static int snd_mtpav_probe(struct platform_device *dev)
err = snd_card_register(mtp_card->card);
if (err < 0)
goto __error;
return err;
platform_set_drvdata(dev, card);
printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
return 0;
__error:
snd_card_free(card);
return err;
}
static int snd_mtpav_remove(struct platform_device *devptr)
{
snd_card_free(platform_get_drvdata(devptr));
return 0;
}
#define SND_MTPAV_DRIVER "snd_mtpav"
static struct platform_driver snd_mtpav_driver = {
.probe = snd_mtpav_probe,
.remove = snd_mtpav_remove,
.driver = {
.name = SND_MTPAV_DRIVER,
},