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

[Takashi Iwai]

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