23 Oct
2020
23 Oct
'20
2:59 p.m.
On Fri, 23 Oct 2020 14:53:08 +0200, Kai-Heng Feng wrote:
On Oct 23, 2020, at 19:34, Takashi Iwai tiwai@suse.de 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?
It's not about MSI. The IRQ number itself may change after the resume.
But I guess it's hard to prove it; the system was tad old, and I don't know who own it now.
Takashi