ALSA: cs4281: 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>

diff --git a/sound/pci/cs4281.c b/sound/pci/cs4281.c
index 4c49b5c..80bb1d1 100644 (file)
--- a/sound/pci/cs4281.c
+++ b/sound/pci/cs4281.c
@@ -2008,7 +2008,6 @@ static int saved_regs[SUSPEND_REGISTERS] = {
 
 static int cs4281_suspend(struct device *dev)
 {
-       struct pci_dev *pci = to_pci_dev(dev);
        struct snd_card *card = dev_get_drvdata(dev);
        struct cs4281 *chip = card->private_data;
        u32 ulCLK;
@@ -2047,30 +2046,16 @@ static int cs4281_suspend(struct device *dev)
        ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
        ulCLK &= ~CLKCR1_CKRA;
        snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
-
-       pci_disable_device(pci);
-       pci_save_state(pci);
-       pci_set_power_state(pci, PCI_D3hot);
        return 0;
 }
 
 static int cs4281_resume(struct device *dev)
 {
-       struct pci_dev *pci = to_pci_dev(dev);
        struct snd_card *card = dev_get_drvdata(dev);
        struct cs4281 *chip = card->private_data;
        unsigned int i;
        u32 ulCLK;
 
-       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);
-
        ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
        ulCLK |= CLKCR1_CKRA;
        snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);