[PATCH 2/4] ALSA: hda: Stop mangling PCI MSI

[Kai-Heng Feng]

The code predates 2005, it should be unnecessary now as PCI core handles
MSI much better nowadays.

So stop PCI MSI mangling in suspend/resume callbacks.

Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com>
---
 sound/pci/hda/hda_intel.c | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 749b88090970..b4aa1dcf1aae 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1022,13 +1022,11 @@ static int azx_suspend(struct device *dev)
 {
        struct snd_card *card = dev_get_drvdata(dev);
        struct azx *chip;
-       struct hdac_bus *bus;
 
        if (!azx_is_pm_ready(card))
                return 0;
 
        chip = card->private_data;
-       bus = azx_bus(chip);
        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
        /* An ugly workaround: direct call of __azx_runtime_suspend() and
         * __azx_runtime_resume() for old Intel platforms that suffer from
@@ -1038,14 +1036,6 @@ static int azx_suspend(struct device *dev)
                __azx_runtime_suspend(chip);
        else
                pm_runtime_force_suspend(dev);
-       if (bus->irq >= 0) {
-               free_irq(bus->irq, chip);
-               bus->irq = -1;
-               chip->card->sync_irq = -1;
-       }
-
-       if (chip->msi)
-               pci_disable_msi(chip->pci);
 
        trace_azx_suspend(chip);
        return 0;
@@ -1060,11 +1050,6 @@ static int azx_resume(struct device *dev)
                return 0;
 
        chip = card->private_data;
-       if (chip->msi)
-               if (pci_enable_msi(chip->pci) < 0)
-                       chip->msi = 0;
-       if (azx_acquire_irq(chip, 1) < 0)
-               return -EIO;
 
        if (chip->driver_caps & AZX_DCAPS_SUSPEND_SPURIOUS_WAKEUP)
                __azx_runtime_resume(chip, false);
-- 
2.17.1