On Sat, Oct 03, 2015 at 03:36:35PM +0800, Jiang Liu wrote:
> The above change is not needed, pcibios_disable_irq() will
> first check !pci_has_managed_irq(dev) before actually freeing
> PCI irq. pci_has_managed_irq(dev) only returns true if
> pcibios_alloc_irq() succeeds.
>
> So to summary, I think we only need following change to fix the
> regression:
> int pcibios_alloc_irq(struct pci_dev *dev)
> {
> + if (pci_dev_msi_enabled(dev))
> + return -EBUSY;
>
> What do you think?
Yap, that works too. I've got only this ontop of 4.3+tip:
---
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index dc78a4a9a466..a4687aa6c1fb 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -675,6 +675,9 @@ int pcibios_add_device(struct pci_dev *dev)
int pcibios_alloc_irq(struct pci_dev *dev)
{
+ if (pci_dev_msi_enabled(dev))
+ return -EBUSY;
+
return pcibios_enable_irq(dev);
}
---
and it suspend+resumed fine.
I guess it is time for Joerg to write a proper patch. :-)
Thanks.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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