[ALSA] Various fixes for suspend/resume of ALSA PCI drivers

- Check the return value of pci_enable_device() and request_irq()
  in the suspend.  If any error occurs there, disable the device
  using snd_card_disconnect().
- Call pci_set_power_state() properly with pci_choose_state().
- Fix the order to call pci_set_power_state().
- Removed obsolete house-made PM codes in some drivers.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 9 insertions, 9 deletions

diff --git a/sound/pci/trident/trident_main.c b/sound/pci/trident/trident_main.c
index 0d478871808d..1fbc4321122f 100644
--- a/sound/pci/trident/trident_main.c
+++ b/sound/pci/trident/trident_main.c
@@ -3966,15 +3966,9 @@ int snd_trident_suspend(struct pci_dev *pci, pm_message_t state)
         snd_ac97_suspend(trident->ac97);
         snd_ac97_suspend(trident->ac97_sec);
 
-        switch (trident->device) {
-        case TRIDENT_DEVICE_ID_DX:
-        case TRIDENT_DEVICE_ID_NX:
-                break;                  /* TODO */
-        case TRIDENT_DEVICE_ID_SI7018:
-                break;
-        }
         pci_disable_device(pci);
         pci_save_state(pci);
+        pci_set_power_state(pci, pci_choose_state(pci, state));
         return 0;
 }
 
@@ -3983,9 +3977,15 @@ int snd_trident_resume(struct pci_dev *pci)
         struct snd_card *card = pci_get_drvdata(pci);
         struct snd_trident *trident = card->private_data;
 
+        pci_set_power_state(pci, PCI_D0);
         pci_restore_state(pci);
-        pci_enable_device(pci);
-        pci_set_master(pci); /* to be sure */
+        if (pci_enable_device(pci) < 0) {
+                printk(KERN_ERR "trident: pci_enable_device failed, "
+                       "disabling device\n");
+                snd_card_disconnect(card);
+                return -EIO;
+        }
+        pci_set_master(pci);
 
         switch (trident->device) {
         case TRIDENT_DEVICE_ID_DX: