> On Oct 23, 2020, at 19:34, Takashi Iwai <tiwai@xxxxxxx> wrote:
>
> 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.
Can this issue happened before commit 41017f0cac925 ("[PATCH] PCI: MSI(X) save/restore for suspend/resume") was merged?
Kai-Heng
>
>> - if (azx_acquire_irq(chip, 1) < 0)
>> - return -EIO;
>
> Ditto.
>
>
> thanks,
>
> Takashi
