[alsa-devel] [PATCH 3/4] ALSA: hda - Fix runtime PM check

[Wang Xingchao]

The device can support runtime PM no matter whether
it support signal wakeup or not. For some chips like Haswell
which doesnot support PME by default, this patch let haswell
Display HD-A controller enter runtime suspend, and bring more
power saving whith power-well feature enabled.
Signed-off-by: Wang Xingchao <xingchao.wang at linux.intel.com>
---
 sound/pci/hda/hda_intel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 54c7c22..f20a88c 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -3755,7 +3755,7 @@ static int azx_probe(struct pci_dev *pci,
 			goto out_free_power;
 	}
 
-	if (pci_dev_run_wake(pci))
+	if (chip->driver_caps & AZX_DCAPS_PM_RUNTIME)
 		pm_runtime_put_noidle(&pci->dev);
 
 	dev++;
@@ -3834,7 +3834,7 @@ static void azx_remove(struct pci_dev *pci)
 	struct snd_card *card = pci_get_drvdata(pci);
 	struct azx *chip = card->private_data;
 
-	if (pci_dev_run_wake(pci))
+	if (chip->driver_caps & AZX_DCAPS_PM_RUNTIME)
 		pm_runtime_get_noresume(&pci->dev);
 
 	if (card)
-- 
1.8.1.2