Messages in this thread | | | Date | Mon, 23 Nov 2015 18:38:28 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: [PATCH] PCI: MSI: Only use the generic MSI layer when domain is hierarchical |
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On Mon, 23 Nov 2015, Marc Zyngier wrote:
> Since d8a1cb757550 ("PCI/MSI: Let pci_msi_get_domain use struct > device::msi_domain"), we use the MSI domain associated to the PCI device. > > But finding a MSI domain doesn't mean that the domain is implemented > using the generic MSI domain API, and a number of MSI controllers > are still using the arch_setup_msi_irq/arch_teardown_msi_irqs. > > In order to avoid a firework on these systems, check that the domain > we just obtained is hierarchical. If not, don't use the generic MSI > stuff and stick with the old one. Not pretty, but reliable. > > Another insentive to rework those drivers and phase out this API. > > Reported-by: Phil Edworthy <phil.edworthy@renesas.com> > Tested-by: Phil Edworthy <phil.edworthy@renesas.com> > Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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