forked from Minki/linux
ALSA: au88x0: Allocate resources with device-managed APIs
This patch converts the resource management in PCI au88x0 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/20210715075941.23332-28-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
24ee07fbf9
commit
e44b5b4406
@ -123,56 +123,35 @@ static void snd_vortex_workaround(struct pci_dev *vortex, int fix)
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// component-destructor
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// (see "Management of Cards and Components")
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static int snd_vortex_dev_free(struct snd_device *device)
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static void snd_vortex_free(struct snd_card *card)
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{
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vortex_t *vortex = device->device_data;
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vortex_t *vortex = card->private_data;
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vortex_gameport_unregister(vortex);
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vortex_core_shutdown(vortex);
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// Take down PCI interface.
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free_irq(vortex->irq, vortex);
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iounmap(vortex->mmio);
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pci_release_regions(vortex->pci_dev);
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pci_disable_device(vortex->pci_dev);
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kfree(vortex);
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return 0;
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}
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// chip-specific constructor
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// (see "Management of Cards and Components")
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static int
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snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
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snd_vortex_create(struct snd_card *card, struct pci_dev *pci)
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{
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vortex_t *chip;
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vortex_t *chip = card->private_data;
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int err;
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static const struct snd_device_ops ops = {
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.dev_free = snd_vortex_dev_free,
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};
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*rchip = NULL;
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// check PCI availability (DMA).
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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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if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {
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dev_err(card->dev, "error to set DMA mask\n");
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pci_disable_device(pci);
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return -ENXIO;
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}
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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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// initialize the stuff
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chip->pci_dev = pci;
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chip->io = pci_resource_start(pci, 0);
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chip->vendor = pci->vendor;
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chip->device = pci->device;
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chip->card = card;
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@ -181,16 +160,12 @@ snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
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// (1) PCI resource allocation
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// Get MMIO area
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//
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err = pci_request_regions(pci, CARD_NAME_SHORT);
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err = pcim_iomap_regions(pci, 1 << 0, CARD_NAME_SHORT);
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if (err)
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goto regions_out;
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return err;
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chip->mmio = pci_ioremap_bar(pci, 0);
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if (!chip->mmio) {
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dev_err(card->dev, "MMIO area remap failed.\n");
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err = -ENOMEM;
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goto ioremap_out;
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}
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chip->io = pci_resource_start(pci, 0);
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chip->mmio = pcim_iomap_table(pci)[0];
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/* Init audio core.
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* This must be done before we do request_irq otherwise we can get spurious
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@ -198,44 +173,22 @@ snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
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err = vortex_core_init(chip);
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if (err) {
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dev_err(card->dev, "hw core init failed\n");
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goto core_out;
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return err;
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}
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err = request_irq(pci->irq, vortex_interrupt,
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IRQF_SHARED, KBUILD_MODNAME, chip);
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err = devm_request_irq(&pci->dev, pci->irq, vortex_interrupt,
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IRQF_SHARED, KBUILD_MODNAME, chip);
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if (err) {
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dev_err(card->dev, "cannot grab irq\n");
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goto irq_out;
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return err;
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}
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chip->irq = pci->irq;
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card->sync_irq = chip->irq;
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card->private_free = snd_vortex_free;
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pci_set_master(pci);
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// End of PCI setup.
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// Register alsa root device.
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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 alloc_out;
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*rchip = chip;
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return 0;
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alloc_out:
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free_irq(chip->irq, chip);
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irq_out:
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vortex_core_shutdown(chip);
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core_out:
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iounmap(chip->mmio);
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ioremap_out:
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pci_release_regions(chip->pci_dev);
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regions_out:
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pci_disable_device(chip->pci_dev);
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//FIXME: this not the right place to unregister the gameport
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vortex_gameport_unregister(chip);
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kfree(chip);
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return err;
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}
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// constructor -- see "Constructor" sub-section
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@ -255,17 +208,16 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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return -ENOENT;
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}
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// (2)
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err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
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0, &card);
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err = snd_devm_card_new(&pci->dev, index[dev], id[dev], 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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// (3)
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err = snd_vortex_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_vortex_create(card, pci);
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if (err < 0)
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return err;
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}
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snd_vortex_workaround(pci, pcifix[dev]);
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// Card details needed in snd_vortex_midi
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@ -276,50 +228,37 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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// (4) Alloc components.
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err = snd_vortex_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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// ADB pcm.
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err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_PCM);
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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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#ifndef CHIP_AU8820
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// ADB SPDIF
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err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1);
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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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// A3D
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err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D);
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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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#endif
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/*
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// ADB I2S
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if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
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snd_card_free(card);
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return err;
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}
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*/
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#ifndef CHIP_AU8810
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// WT pcm.
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err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT);
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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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#endif
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err = snd_vortex_midi(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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vortex_gameport_register(chip);
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@ -342,15 +281,11 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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// (5)
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err = pci_read_config_word(pci, PCI_DEVICE_ID, &chip->device);
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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 = pci_read_config_word(pci, PCI_VENDOR_ID, &chip->vendor);
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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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chip->rev = pci->revision;
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#ifdef CHIP_AU8830
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if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
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@ -359,18 +294,14 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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chip->rev);
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dev_alert(card->dev,
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"Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n");
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snd_card_free(card);
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err = -ENODEV;
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return err;
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return -ENODEV;
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}
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#endif
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// (6)
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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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// (7)
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pci_set_drvdata(pci, card);
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dev++;
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@ -379,18 +310,11 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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return 0;
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}
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// destructor -- see "Destructor" sub-section
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static void snd_vortex_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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// pci_driver definition
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static struct pci_driver vortex_driver = {
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.name = KBUILD_MODNAME,
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.id_table = snd_vortex_ids,
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.probe = snd_vortex_probe,
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.remove = snd_vortex_remove,
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};
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module_pci_driver(vortex_driver);
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