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ALSA: fm801: PCI core handles power state for us 

There is no need to repeat the work that is already done in the PCI
driver core. The patch removes excerpts from suspend and resume
callbacks.

Note that there is no more calls performed to enable or disable a PCI
device during suspend-resume cycle. Nowadays they seems to be
superflous. Someone can read more in [1].

[1] https://www.kernel.org/doc/ols/2009/ols2009-pages-319-330.pdf

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Andy Shevchenko 2015-01-08 00:39:17 +02:00 committed by Takashi Iwai
parent 5618955c42
commit 3db084fd0a
1 changed files with 0 additions and 15 deletions
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15
sound/pci/fm801.c
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@ -1375,7 +1375,6 @@ static unsigned char saved_regs[] = {
static int snd_fm801_suspend(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
struct fm801 *chip = card->private_data;
int i;
@ -1387,29 +1386,15 @@ static int snd_fm801_suspend(struct device *dev)
for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
chip->saved_regs[i] = inw(chip->port + saved_regs[i]);
/* FIXME: tea575x suspend */
pci_disable_device(pci);
pci_save_state(pci);
pci_set_power_state(pci, PCI_D3hot);
return 0;
}
static int snd_fm801_resume(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
struct fm801 *chip = card->private_data;
int i;
pci_set_power_state(pci, PCI_D0);
pci_restore_state(pci);
if (pci_enable_device(pci) < 0) {
dev_err(dev, "pci_enable_device failed, disabling device\n");
snd_card_disconnect(card);
return -EIO;
}
pci_set_master(pci);
snd_fm801_chip_init(chip, 1);
snd_ac97_resume(chip->ac97);
snd_ac97_resume(chip->ac97_sec);