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ALSA: cmipci: Allocate resources with device-managed APIs 

This patch converts the resource management in PCI cmipci 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/20210715075941.23332-14-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:58:35 +02:00
parent 9e80ed64a0
commit 87e082ad84
1 changed files with 28 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

104
sound/pci/cmipci.c
View File

@ -2852,13 +2852,15 @@ static int snd_cmipci_create_gameport(struct cmipci *cm, int dev)
if (joystick_port[dev] == 1) { /* auto-detect */
for (i = 0; ports[i]; i++) {
io_port = ports[i];
r = request_region(io_port, 1, "CMIPCI gameport");
r = devm_request_region(&cm->pci->dev, io_port, 1,
"CMIPCI gameport");
if (r)
break;
}
} else {
io_port = joystick_port[dev];
r = request_region(io_port, 1, "CMIPCI gameport");
r = devm_request_region(&cm->pci->dev, io_port, 1,
"CMIPCI gameport");
}
if (!r) {
@ -2869,14 +2871,12 @@ static int snd_cmipci_create_gameport(struct cmipci *cm, int dev)
cm->gameport = gp = gameport_allocate_port();
if (!gp) {
dev_err(cm->card->dev, "cannot allocate memory for gameport\n");
release_and_free_resource(r);
return -ENOMEM;
}
gameport_set_name(gp, "C-Media Gameport");
gameport_set_phys(gp, "pci%s/gameport0", pci_name(cm->pci));
gameport_set_dev_parent(gp, &cm->pci->dev);
gp->io = io_port;
gameport_set_port_data(gp, r);
snd_cmipci_set_bit(cm, CM_REG_FUNCTRL1, CM_JYSTK_EN);
@ -2888,13 +2888,10 @@ static int snd_cmipci_create_gameport(struct cmipci *cm, int dev)
static void snd_cmipci_free_gameport(struct cmipci *cm)
{
if (cm->gameport) {
struct resource *r = gameport_get_port_data(cm->gameport);
gameport_unregister_port(cm->gameport);
cm->gameport = NULL;
snd_cmipci_clear_bit(cm, CM_REG_FUNCTRL1, CM_JYSTK_EN);
release_and_free_resource(r);
}
}
#else
@ -2902,34 +2899,22 @@ static inline int snd_cmipci_create_gameport(struct cmipci *cm, int dev) { retur
static inline void snd_cmipci_free_gameport(struct cmipci *cm) { }
#endif
static int snd_cmipci_free(struct cmipci *cm)
static void snd_cmipci_free(struct snd_card *card)
{
if (cm->irq >= 0) {
snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_FM_EN);
snd_cmipci_clear_bit(cm, CM_REG_LEGACY_CTRL, CM_ENSPDOUT);
snd_cmipci_write(cm, CM_REG_INT_HLDCLR, 0); /* disable ints */
snd_cmipci_ch_reset(cm, CM_CH_PLAY);
snd_cmipci_ch_reset(cm, CM_CH_CAPT);
snd_cmipci_write(cm, CM_REG_FUNCTRL0, 0); /* disable channels */
snd_cmipci_write(cm, CM_REG_FUNCTRL1, 0);
struct cmipci *cm = card->private_data;
/* reset mixer */
snd_cmipci_mixer_write(cm, 0, 0);
snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_FM_EN);
snd_cmipci_clear_bit(cm, CM_REG_LEGACY_CTRL, CM_ENSPDOUT);
snd_cmipci_write(cm, CM_REG_INT_HLDCLR, 0); /* disable ints */
snd_cmipci_ch_reset(cm, CM_CH_PLAY);
snd_cmipci_ch_reset(cm, CM_CH_CAPT);
snd_cmipci_write(cm, CM_REG_FUNCTRL0, 0); /* disable channels */
snd_cmipci_write(cm, CM_REG_FUNCTRL1, 0);
free_irq(cm->irq, cm);
}
/* reset mixer */
snd_cmipci_mixer_write(cm, 0, 0);
snd_cmipci_free_gameport(cm);
pci_release_regions(cm->pci);
pci_disable_device(cm->pci);
kfree(cm);
return 0;
}
static int snd_cmipci_dev_free(struct snd_device *device)
{
struct cmipci *cm = device->device_data;
return snd_cmipci_free(cm);
}
static int snd_cmipci_create_fm(struct cmipci *cm, long fm_port)
@ -2988,13 +2973,10 @@ static int snd_cmipci_create_fm(struct cmipci *cm, long fm_port)
}
static int snd_cmipci_create(struct snd_card *card, struct pci_dev *pci,
int dev, struct cmipci **rcmipci)
int dev)
{
struct cmipci *cm;
struct cmipci *cm = card->private_data;
int err;
static const struct snd_device_ops ops = {
.dev_free = snd_cmipci_dev_free,
};
unsigned int val;
long iomidi = 0;
int integrated_midi = 0;
@ -3005,18 +2987,10 @@ static int snd_cmipci_create(struct snd_card *card, struct pci_dev *pci,
{ },
};
*rcmipci = NULL;
err = pci_enable_device(pci);
err = pcim_enable_device(pci);
if (err < 0)
return err;
cm = kzalloc(sizeof(*cm), GFP_KERNEL);
if (cm == NULL) {
pci_disable_device(pci);
return -ENOMEM;
}
spin_lock_init(&cm->reg_lock);
mutex_init(&cm->open_mutex);
cm->device = pci->device;
@ -3028,21 +3002,18 @@ static int snd_cmipci_create(struct snd_card *card, struct pci_dev *pci,
cm->channel[0].is_dac = cm->channel[1].is_dac = 1; /* dual DAC mode */
err = pci_request_regions(pci, card->driver);
if (err < 0) {
kfree(cm);
pci_disable_device(pci);
if (err < 0)
return err;
}
cm->iobase = pci_resource_start(pci, 0);
if (request_irq(pci->irq, snd_cmipci_interrupt,
IRQF_SHARED, KBUILD_MODNAME, cm)) {
if (devm_request_irq(&pci->dev, pci->irq, snd_cmipci_interrupt,
IRQF_SHARED, KBUILD_MODNAME, cm)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
snd_cmipci_free(cm);
return -EBUSY;
}
cm->irq = pci->irq;
card->sync_irq = cm->irq;
card->private_free = snd_cmipci_free;
pci_set_master(cm->pci);
@ -3142,12 +3113,6 @@ static int snd_cmipci_create(struct snd_card *card, struct pci_dev *pci,
sprintf(card->longname, "%s%s at %#lx, irq %i",
card->shortname, modelstr, cm->iobase, cm->irq);
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, cm, &ops);
if (err < 0) {
snd_cmipci_free(cm);
return err;
}
if (cm->chip_version >= 39) {
val = snd_cmipci_read_b(cm, CM_REG_MPU_PCI + 1);
if (val != 0x00 && val != 0xff) {
@ -3240,7 +3205,6 @@ static int snd_cmipci_create(struct snd_card *card, struct pci_dev *pci,
if (snd_cmipci_create_gameport(cm, dev) < 0)
snd_cmipci_clear_bit(cm, CM_REG_FUNCTRL1, CM_JYSTK_EN);
*rcmipci = cm;
return 0;
}
@ -3264,10 +3228,11 @@ static int snd_cmipci_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(*cm), &card);
if (err < 0)
return err;
cm = card->private_data;
switch (pci->device) {
case PCI_DEVICE_ID_CMEDIA_CM8738:
@ -3283,31 +3248,19 @@ static int snd_cmipci_probe(struct pci_dev *pci,
break;
}
err = snd_cmipci_create(card, pci, dev, &cm);
err = snd_cmipci_create(card, pci, dev);
if (err < 0)
goto free_card;
card->private_data = cm;
return err;
err = snd_card_register(card);
if (err < 0)
goto free_card;
return err;
pci_set_drvdata(pci, card);
dev++;
return 0;
free_card:
snd_card_free(card);
return err;
}
static void snd_cmipci_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
}
#ifdef CONFIG_PM_SLEEP
/*
* power management
@ -3382,7 +3335,6 @@ static struct pci_driver cmipci_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_cmipci_ids,
.probe = snd_cmipci_probe,
.remove = snd_cmipci_remove,
.driver = {
.pm = SND_CMIPCI_PM_OPS,
},