mirror of https://gitee.com/openkylin/linux.git
ALSA: es1968: Allocate resources with device-managed APIs
This patch converts the resource management in PCI es1968 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/20210715075941.23332-19-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
08e9d3ab4c
commit
a7b4cbfdc7
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@ -2442,7 +2442,8 @@ static int snd_es1968_create_gameport(struct es1968 *chip, int dev)
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if (!joystick[dev])
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return -ENODEV;
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r = request_region(JOYSTICK_ADDR, 8, "ES1968 gameport");
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r = devm_request_region(&chip->pci->dev, JOYSTICK_ADDR, 8,
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"ES1968 gameport");
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if (!r)
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return -EBUSY;
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@ -2450,7 +2451,6 @@ static int snd_es1968_create_gameport(struct es1968 *chip, int dev)
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if (!gp) {
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dev_err(chip->card->dev,
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"cannot allocate memory for gameport\n");
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release_and_free_resource(r);
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return -ENOMEM;
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}
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@ -2461,7 +2461,6 @@ static int snd_es1968_create_gameport(struct es1968 *chip, int dev)
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gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
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gameport_set_dev_parent(gp, &chip->pci->dev);
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gp->io = JOYSTICK_ADDR;
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gameport_set_port_data(gp, r);
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gameport_register_port(gp);
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@ -2471,12 +2470,8 @@ static int snd_es1968_create_gameport(struct es1968 *chip, int dev)
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static void snd_es1968_free_gameport(struct es1968 *chip)
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{
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if (chip->gameport) {
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struct resource *r = gameport_get_port_data(chip->gameport);
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gameport_unregister_port(chip->gameport);
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chip->gameport = NULL;
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release_and_free_resource(r);
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}
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}
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#else
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@ -2490,7 +2485,7 @@ static int snd_es1968_input_register(struct es1968 *chip)
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struct input_dev *input_dev;
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int err;
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input_dev = input_allocate_device();
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input_dev = devm_input_allocate_device(&chip->pci->dev);
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if (!input_dev)
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return -ENOMEM;
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@ -2510,10 +2505,8 @@ static int snd_es1968_input_register(struct es1968 *chip)
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__set_bit(KEY_VOLUMEUP, input_dev->keybit);
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err = input_register_device(input_dev);
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if (err) {
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input_free_device(input_dev);
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if (err)
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return err;
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}
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chip->input_dev = input_dev;
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return 0;
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@ -2597,13 +2590,11 @@ static const struct snd_tea575x_ops snd_es1968_tea_ops = {
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};
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#endif
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static int snd_es1968_free(struct es1968 *chip)
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static void snd_es1968_free(struct snd_card *card)
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{
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struct es1968 *chip = card->private_data;
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cancel_work_sync(&chip->hwvol_work);
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#ifdef CONFIG_SND_ES1968_INPUT
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if (chip->input_dev)
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input_unregister_device(chip->input_dev);
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#endif
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if (chip->io_port) {
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outw(1, chip->io_port + 0x04); /* clear WP interrupts */
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@ -2615,19 +2606,7 @@ static int snd_es1968_free(struct es1968 *chip)
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v4l2_device_unregister(&chip->v4l2_dev);
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#endif
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if (chip->irq >= 0)
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free_irq(chip->irq, chip);
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snd_es1968_free_gameport(chip);
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pci_release_regions(chip->pci);
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pci_disable_device(chip->pci);
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kfree(chip);
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return 0;
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}
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static int snd_es1968_dev_free(struct snd_device *device)
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{
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struct es1968 *chip = device->device_data;
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return snd_es1968_free(chip);
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}
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struct ess_device_list {
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@ -2657,35 +2636,22 @@ static int snd_es1968_create(struct snd_card *card,
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int capt_streams,
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int chip_type,
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int do_pm,
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int radio_nr,
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struct es1968 **chip_ret)
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int radio_nr)
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{
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static const struct snd_device_ops ops = {
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.dev_free = snd_es1968_dev_free,
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};
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struct es1968 *chip;
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struct es1968 *chip = card->private_data;
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int i, err;
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*chip_ret = NULL;
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/* enable PCI device */
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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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/* check, if we can restrict PCI DMA transfers to 28 bits */
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if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
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dev_err(card->dev,
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"architecture does not support 28bit PCI busmaster DMA\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) {
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pci_disable_device(pci);
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return -ENOMEM;
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}
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/* Set Vars */
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chip->type = chip_type;
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spin_lock_init(&chip->reg_lock);
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@ -2702,20 +2668,17 @@ static int snd_es1968_create(struct snd_card *card,
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chip->capture_streams = capt_streams;
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err = pci_request_regions(pci, "ESS Maestro");
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if (err < 0) {
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kfree(chip);
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pci_disable_device(pci);
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if (err < 0)
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return err;
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}
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chip->io_port = pci_resource_start(pci, 0);
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if (request_irq(pci->irq, snd_es1968_interrupt, IRQF_SHARED,
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KBUILD_MODNAME, chip)) {
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if (devm_request_irq(&pci->dev, pci->irq, snd_es1968_interrupt,
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IRQF_SHARED, KBUILD_MODNAME, chip)) {
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dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
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snd_es1968_free(chip);
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return -EBUSY;
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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_es1968_free;
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/* Clear Maestro_map */
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for (i = 0; i < 32; i++)
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@ -2749,21 +2712,13 @@ static int snd_es1968_create(struct snd_card *card,
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snd_es1968_chip_init(chip);
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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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snd_es1968_free(chip);
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return err;
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}
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#ifdef CONFIG_SND_ES1968_RADIO
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/* don't play with GPIOs on laptops */
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if (chip->pci->subsystem_vendor != 0x125d)
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goto no_radio;
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return 0;
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err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
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if (err < 0) {
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snd_es1968_free(chip);
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if (err < 0)
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return err;
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}
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chip->tea.v4l2_dev = &chip->v4l2_dev;
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chip->tea.private_data = chip;
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chip->tea.radio_nr = radio_nr;
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@ -2779,11 +2734,7 @@ static int snd_es1968_create(struct snd_card *card,
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break;
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}
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}
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no_radio:
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#endif
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*chip_ret = chip;
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return 0;
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}
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@ -2806,10 +2757,11 @@ static int snd_es1968_probe(struct pci_dev *pci,
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return -ENOENT;
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}
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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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if (total_bufsize[dev] < 128)
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total_bufsize[dev] = 128;
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@ -2821,13 +2773,9 @@ static int snd_es1968_probe(struct pci_dev *pci,
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pcm_substreams_c[dev],
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pci_id->driver_data,
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use_pm[dev],
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radio_nr[dev],
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&chip);
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if (err < 0) {
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snd_card_free(card);
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radio_nr[dev]);
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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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switch (chip->type) {
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case TYPE_MAESTRO2E:
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@ -2845,16 +2793,12 @@ static int snd_es1968_probe(struct pci_dev *pci,
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}
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err = snd_es1968_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_es1968_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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if (enable_mpu[dev] == 2) {
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/* check the deny list */
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@ -2897,25 +2841,17 @@ static int snd_es1968_probe(struct pci_dev *pci,
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card->shortname, chip->io_port, 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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dev++;
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return 0;
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}
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static void snd_es1968_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 es1968_driver = {
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.name = KBUILD_MODNAME,
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.id_table = snd_es1968_ids,
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.probe = snd_es1968_probe,
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.remove = snd_es1968_remove,
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.driver = {
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.pm = ES1968_PM_OPS,
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},
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