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ALSA: cs5530: Allocate resources with device-managed APIs 

This patch converts the resource management in PCI cs5530 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/20210715075941.23332-16-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:58:37 +02:00
parent 99041fea70
commit 2e11e3ff2a
1 changed files with 13 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
sound/pci/cs5530.c
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@ -65,25 +65,6 @@ static const struct pci_device_id snd_cs5530_ids[] = {
MODULE_DEVICE_TABLE(pci, snd_cs5530_ids);
static int snd_cs5530_free(struct snd_cs5530 *chip)
{
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
return 0;
}
static int snd_cs5530_dev_free(struct snd_device *device)
{
struct snd_cs5530 *chip = device->device_data;
return snd_cs5530_free(chip);
}
static void snd_cs5530_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
}
static u8 snd_cs5530_mixer_read(unsigned long io, u8 reg)
{
outb(reg, io + 4);
@ -94,50 +75,28 @@ static u8 snd_cs5530_mixer_read(unsigned long io, u8 reg)
}
static int snd_cs5530_create(struct snd_card *card,
struct pci_dev *pci,
struct snd_cs5530 **rchip)
struct pci_dev *pci)
{
struct snd_cs5530 *chip;
struct snd_cs5530 *chip = card->private_data;
unsigned long sb_base;
u8 irq, dma8, dma16 = 0;
u16 map;
void __iomem *mem;
int err;
static const struct snd_device_ops ops = {
.dev_free = snd_cs5530_dev_free,
};
*rchip = NULL;
err = pci_enable_device(pci);
err = pcim_enable_device(pci);
if (err < 0)
return err;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
pci_disable_device(pci);
return -ENOMEM;
}
chip->card = card;
chip->pci = pci;
err = pci_request_regions(pci, "CS5530");
if (err < 0) {
kfree(chip);
pci_disable_device(pci);
err = pcim_iomap_regions(pci, 1 << 0, "CS5530");
if (err < 0)
return err;
}
chip->pci_base = pci_resource_start(pci, 0);
mem = pci_ioremap_bar(pci, 0);
if (mem == NULL) {
snd_cs5530_free(chip);
return -EBUSY;
}
mem = pcim_iomap_table(pci)[0];
map = readw(mem + 0x18);
iounmap(mem);
/* Map bits
0:1 * 0x20 + 0x200 = sb base
@ -154,7 +113,6 @@ static int snd_cs5530_create(struct snd_card *card,
dev_info(card->dev, "XpressAudio at 0x%lx\n", sb_base);
else {
dev_err(card->dev, "Could not find XpressAudio!\n");
snd_cs5530_free(chip);
return -ENODEV;
}
@ -174,7 +132,6 @@ static int snd_cs5530_create(struct snd_card *card,
dma16 = 7;
else {
dev_err(card->dev, "No 16bit DMA enabled\n");
snd_cs5530_free(chip);
return -ENODEV;
}
@ -186,7 +143,6 @@ static int snd_cs5530_create(struct snd_card *card,
dma8 = 3;
else {
dev_err(card->dev, "No 8bit DMA enabled\n");
snd_cs5530_free(chip);
return -ENODEV;
}
@ -200,7 +156,6 @@ static int snd_cs5530_create(struct snd_card *card,
irq = 10;
else {
dev_err(card->dev, "SoundBlaster IRQ not set\n");
snd_cs5530_free(chip);
return -ENODEV;
}
@ -210,31 +165,21 @@ static int snd_cs5530_create(struct snd_card *card,
dma16, SB_HW_CS5530, &chip->sb);
if (err < 0) {
dev_err(card->dev, "Could not create SoundBlaster\n");
snd_cs5530_free(chip);
return err;
}
err = snd_sb16dsp_pcm(chip->sb, 0);
if (err < 0) {
dev_err(card->dev, "Could not create PCM\n");
snd_cs5530_free(chip);
return err;
}
err = snd_sbmixer_new(chip->sb);
if (err < 0) {
dev_err(card->dev, "Could not create Mixer\n");
snd_cs5530_free(chip);
return err;
}
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
if (err < 0) {
snd_cs5530_free(chip);
return err;
}
*rchip = chip;
return 0;
}
@ -243,7 +188,7 @@ static int snd_cs5530_probe(struct pci_dev *pci,
{
static int dev;
struct snd_card *card;
struct snd_cs5530 *chip = NULL;
struct snd_cs5530 *chip;
int err;
if (dev >= SNDRV_CARDS)
@ -253,27 +198,23 @@ static int snd_cs5530_probe(struct pci_dev *pci,
return -ENOENT;
}
err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
0, &card);
err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
sizeof(*chip), &card);
if (err < 0)
return err;
chip = card->private_data;
err = snd_cs5530_create(card, pci, &chip);
if (err < 0) {
snd_card_free(card);
err = snd_cs5530_create(card, pci);
if (err < 0)
return err;
}
strcpy(card->driver, "CS5530");
strcpy(card->shortname, "CS5530 Audio");
sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base);
err = snd_card_register(card);
if (err < 0) {
snd_card_free(card);
if (err < 0)
return err;
}
pci_set_drvdata(pci, card);
dev++;
return 0;
@ -283,7 +224,6 @@ static struct pci_driver cs5530_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_cs5530_ids,
.probe = snd_cs5530_probe,
.remove = snd_cs5530_remove,
};
module_pci_driver(cs5530_driver);