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ALSA: hda: Allocate resources with device-managed APIs 

This patch is an attempt to slightly simplify the resource management
in HD-audio code, by using some device-managed APIs.  Only a few
resources like PCI enablement and PCI resources managed via devres,
but most of the rest code dealing with HD-audio core stuff couldn't be
changed so much, hence the changes in this patch are pretty small in
the end.  A special caveat is needed for the card object: we can't
move the card object release into devres, because the driver is
involved with the component stuff and its unregistiration doesn't work
well from devres release at all.

Link: https://lore.kernel.org/r/20210715075941.23332-8-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-15 09:58:29 +02:00
parent 86bde74dbf
commit 3fcaf24e5d
2 changed files with 5 additions and 22 deletions
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1
sound/pci/hda/hda_controller.h
View File

@ -141,7 +141,6 @@ struct azx {
unsigned int snoop:1;
unsigned int uc_buffer:1; /* non-cached pages for stream buffers */
unsigned int align_buffer_size:1;
unsigned int region_requested:1;
unsigned int disabled:1; /* disabled by vga_switcheroo */
unsigned int pm_prepared:1;

26
sound/pci/hda/hda_intel.c
View File

@ -1367,18 +1367,11 @@ static void azx_free(struct azx *chip)
if (bus->irq >= 0)
free_irq(bus->irq, (void*)chip);
if (chip->msi)
pci_disable_msi(chip->pci);
iounmap(bus->remap_addr);
azx_free_stream_pages(chip);
azx_free_streams(chip);
snd_hdac_bus_exit(bus);
if (chip->region_requested)
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
#ifdef CONFIG_SND_HDA_PATCH_LOADER
release_firmware(chip->fw);
#endif
@ -1767,15 +1760,13 @@ static int azx_create(struct snd_card *card, struct pci_dev *pci,
*rchip = NULL;
err = pci_enable_device(pci);
err = pcim_enable_device(pci);
if (err < 0)
return err;
hda = devm_kzalloc(&pci->dev, sizeof(*hda), GFP_KERNEL);
if (!hda) {
pci_disable_device(pci);
if (!hda)
return -ENOMEM;
}
chip = &hda->chip;
mutex_init(&chip->open_mutex);
@ -1811,10 +1802,8 @@ static int azx_create(struct snd_card *card, struct pci_dev *pci,
chip->bdl_pos_adj = bdl_pos_adj[dev];
err = azx_bus_init(chip, model[dev]);
if (err < 0) {
pci_disable_device(pci);
if (err < 0)
return err;
}
/* use the non-cached pages in non-snoop mode */
if (!azx_snoop(chip))
@ -1860,17 +1849,12 @@ static int azx_first_init(struct azx *chip)
}
#endif
err = pci_request_regions(pci, "ICH HD audio");
err = pcim_iomap_regions(pci, 1 << 0, "ICH HD audio");
if (err < 0)
return err;
chip->region_requested = 1;
bus->addr = pci_resource_start(pci, 0);
bus->remap_addr = pci_ioremap_bar(pci, 0);
if (bus->remap_addr == NULL) {
dev_err(card->dev, "ioremap error\n");
return -ENXIO;
}
bus->remap_addr = pcim_iomap_table(pci)[0];
if (chip->driver_type == AZX_DRIVER_SKL)
snd_hdac_bus_parse_capabilities(bus);