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

23 Oct 2020


      On Fri, 23 Oct 2020 12:23:36 +0200,
Kai-Heng Feng wrote:
...
@@ -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;


}

This release of irq has nothing to do with MSI.  There has been PCI
controllers that assign to a different IRQ line after the resume.
...

if (azx_acquire_irq(chip, 1) < 0)
return -EIO;



Ditto.
thanks,
Takashi

    

Takashi Iwai