ALSA: nm256: Allocate resources with device-managed APIs
This patch converts the resource management in PCI nm256 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/20210715075941.23332-43-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
Родитель
6f16c19b11
Коммит
c19935f047
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@ -193,11 +193,9 @@ struct nm256 {
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struct snd_card *card;
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void __iomem *cport; /* control port */
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struct resource *res_cport; /* its resource */
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unsigned long cport_addr; /* physical address */
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void __iomem *buffer; /* buffer */
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struct resource *res_buffer; /* its resource */
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unsigned long buffer_addr; /* buffer phyiscal address */
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u32 buffer_start; /* start offset from pci resource 0 */
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@ -1313,8 +1311,9 @@ snd_nm256_mixer(struct nm256 *chip)
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.read = snd_nm256_ac97_read,
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};
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chip->ac97_regs = kcalloc(ARRAY_SIZE(nm256_ac97_init_val),
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sizeof(short), GFP_KERNEL);
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chip->ac97_regs = devm_kcalloc(chip->card->dev,
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ARRAY_SIZE(nm256_ac97_init_val),
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sizeof(short), GFP_KERNEL);
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if (! chip->ac97_regs)
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return -ENOMEM;
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@ -1437,56 +1436,27 @@ static SIMPLE_DEV_PM_OPS(nm256_pm, nm256_suspend, nm256_resume);
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#define NM256_PM_OPS NULL
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#endif /* CONFIG_PM_SLEEP */
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static int snd_nm256_free(struct nm256 *chip)
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static void snd_nm256_free(struct snd_card *card)
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{
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struct nm256 *chip = card->private_data;
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if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
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snd_nm256_playback_stop(chip);
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if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
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snd_nm256_capture_stop(chip);
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if (chip->irq >= 0)
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free_irq(chip->irq, chip);
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iounmap(chip->cport);
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iounmap(chip->buffer);
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release_and_free_resource(chip->res_cport);
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release_and_free_resource(chip->res_buffer);
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pci_disable_device(chip->pci);
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kfree(chip->ac97_regs);
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kfree(chip);
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return 0;
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}
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static int snd_nm256_dev_free(struct snd_device *device)
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{
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struct nm256 *chip = device->device_data;
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return snd_nm256_free(chip);
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}
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static int
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snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
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struct nm256 **chip_ret)
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snd_nm256_create(struct snd_card *card, struct pci_dev *pci)
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{
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struct nm256 *chip;
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struct nm256 *chip = card->private_data;
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int err, pval;
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static const struct snd_device_ops ops = {
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.dev_free = snd_nm256_dev_free,
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};
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u32 addr;
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*chip_ret = NULL;
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err = pci_enable_device(pci);
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err = pcim_enable_device(pci);
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if (err < 0)
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return err;
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chip = kzalloc(sizeof(*chip), GFP_KERNEL);
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if (chip == NULL) {
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pci_disable_device(pci);
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return -ENOMEM;
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}
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chip->card = card;
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chip->pci = pci;
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chip->use_cache = use_cache;
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@ -1508,22 +1478,16 @@ snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
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chip->buffer_addr = pci_resource_start(pci, 0);
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chip->cport_addr = pci_resource_start(pci, 1);
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if (pci_request_regions(pci, card->driver))
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return err;
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/* Init the memory port info. */
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/* remap control port (#2) */
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chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE,
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card->driver);
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if (chip->res_cport == NULL) {
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dev_err(card->dev, "memory region 0x%lx (size 0x%x) busy\n",
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chip->cport_addr, NM_PORT2_SIZE);
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err = -EBUSY;
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goto __error;
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}
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chip->cport = ioremap(chip->cport_addr, NM_PORT2_SIZE);
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if (chip->cport == NULL) {
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chip->cport = devm_ioremap(&pci->dev, chip->cport_addr, NM_PORT2_SIZE);
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if (!chip->cport) {
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dev_err(card->dev, "unable to map control port %lx\n",
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chip->cport_addr);
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err = -ENOMEM;
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goto __error;
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return -ENOMEM;
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}
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if (!strcmp(card->driver, "NM256AV")) {
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@ -1539,8 +1503,7 @@ snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
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" force_ac97=1\n");
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dev_err(card->dev,
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"or try sb16, opl3sa2, or cs423x drivers instead.\n");
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err = -ENXIO;
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goto __error;
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return -ENXIO;
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}
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}
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chip->buffer_end = 2560 * 1024;
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@ -1572,7 +1535,7 @@ snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
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/* get buffer end pointer from signature */
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err = snd_nm256_peek_for_sig(chip);
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if (err < 0)
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goto __error;
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return err;
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}
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chip->buffer_start = chip->buffer_end - chip->buffer_size;
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@ -1581,21 +1544,12 @@ snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
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dev_info(card->dev, "Mapping port 1 from 0x%x - 0x%x\n",
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chip->buffer_start, chip->buffer_end);
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chip->res_buffer = request_mem_region(chip->buffer_addr,
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chip->buffer_size,
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card->driver);
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if (chip->res_buffer == NULL) {
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dev_err(card->dev, "buffer 0x%lx (size 0x%x) busy\n",
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chip->buffer_addr, chip->buffer_size);
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err = -EBUSY;
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goto __error;
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}
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chip->buffer = ioremap(chip->buffer_addr, chip->buffer_size);
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if (chip->buffer == NULL) {
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err = -ENOMEM;
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chip->buffer = devm_ioremap(&pci->dev, chip->buffer_addr,
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chip->buffer_size);
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if (!chip->buffer) {
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dev_err(card->dev, "unable to map ring buffer at %lx\n",
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chip->buffer_addr);
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goto __error;
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return -ENOMEM;
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}
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/* set offsets */
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@ -1618,19 +1572,10 @@ snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
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chip->coeffs_current = 0;
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snd_nm256_init_chip(chip);
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card->private_free = snd_nm256_free;
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// pci_set_master(pci); /* needed? */
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err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
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if (err < 0)
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goto __error;
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*chip_ret = chip;
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return 0;
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__error:
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snd_nm256_free(chip);
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return err;
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}
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@ -1673,9 +1618,11 @@ static int snd_nm256_probe(struct pci_dev *pci,
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}
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}
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err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
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err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE,
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sizeof(*chip), &card);
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if (err < 0)
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return err;
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chip = card->private_data;
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switch (pci->device) {
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case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO:
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@ -1689,7 +1636,6 @@ static int snd_nm256_probe(struct pci_dev *pci,
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break;
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default:
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dev_err(&pci->dev, "invalid device id 0x%x\n", pci->device);
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snd_card_free(card);
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return -EINVAL;
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}
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@ -1704,12 +1650,9 @@ static int snd_nm256_probe(struct pci_dev *pci,
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capture_bufsize = 4;
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if (capture_bufsize > 128)
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capture_bufsize = 128;
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err = snd_nm256_create(card, pci, &chip);
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if (err < 0) {
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snd_card_free(card);
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err = snd_nm256_create(card, pci);
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if (err < 0)
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return err;
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}
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card->private_data = chip;
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if (reset_workaround) {
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dev_dbg(&pci->dev, "reset_workaround activated\n");
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@ -1722,15 +1665,11 @@ static int snd_nm256_probe(struct pci_dev *pci,
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}
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err = snd_nm256_pcm(chip, 0);
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if (err < 0) {
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snd_card_free(card);
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if (err < 0)
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return err;
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}
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err = snd_nm256_mixer(chip);
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if (err < 0) {
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snd_card_free(card);
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if (err < 0)
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return err;
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}
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sprintf(card->shortname, "NeoMagic %s", card->driver);
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sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d",
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@ -1738,26 +1677,17 @@ static int snd_nm256_probe(struct pci_dev *pci,
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chip->buffer_addr, chip->cport_addr, chip->irq);
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err = snd_card_register(card);
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if (err < 0) {
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snd_card_free(card);
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if (err < 0)
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return err;
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}
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pci_set_drvdata(pci, card);
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return 0;
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}
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static void snd_nm256_remove(struct pci_dev *pci)
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{
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snd_card_free(pci_get_drvdata(pci));
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}
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static struct pci_driver nm256_driver = {
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.name = KBUILD_MODNAME,
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.id_table = snd_nm256_ids,
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.probe = snd_nm256_probe,
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.remove = snd_nm256_remove,
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.driver = {
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.pm = NM256_PM_OPS,
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},
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