[PATCH v2 13/79] ALSA: cmipci: Allocate resources with device-managed APIs
Takashi Iwai
tiwai at suse.de
Thu Jul 15 09:58:35 CEST 2021
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.
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
sound/pci/cmipci.c | 104 ++++++++++++---------------------------------
1 file changed, 28 insertions(+), 76 deletions(-)
diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index f44f118aacad..ea20236f35db 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -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,
},
--
2.26.2
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