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ALSA: cs5535audio: Simplify PM callbacks 

This is a similar cleanup like the commit [3db084fd0af5: ALSA: fm801:
PCI core handles power state for us].

Since pci_set_power_state(), pci_save_state() and pci_restore_state()
are already done in the PCI core side, so we don't need to it doubly.

Also, pci_enable_device(), pci_disable_device() and pci_set_master()
calls in PM callbacks are superfluous nowadays, too, so get rid of
them as well.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-01-08 12:45:43 +01:00
parent 319184680d
commit b8375122b5
1 changed files with 0 additions and 18 deletions
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18
sound/pci/cs5535audio/cs5535audio_pm.c
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@ -57,7 +57,6 @@ static void snd_cs5535audio_stop_hardware(struct cs5535audio *cs5535au)
static int snd_cs5535audio_suspend(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
struct cs5535audio *cs5535au = card->private_data;
int i;
@ -72,34 +71,17 @@ static int snd_cs5535audio_suspend(struct device *dev)
}
/* save important regs, then disable aclink in hw */
snd_cs5535audio_stop_hardware(cs5535au);
if (pci_save_state(pci)) {
dev_err(dev, "pci_save_state failed!\n");
return -EIO;
}
pci_disable_device(pci);
pci_set_power_state(pci, PCI_D3hot);
return 0;
}
static int snd_cs5535audio_resume(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
struct cs5535audio *cs5535au = card->private_data;
u32 tmp;
int timeout;
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);
/* set LNK_WRM_RST to reset AC link */
cs_writel(cs5535au, ACC_CODEC_CNTL, ACC_CODEC_CNTL_LNK_WRM_RST);