Re: [PATCH] PCI: MSI: Only use the generic MSI layer when domain is hierarchical

[Marc Zyngier <marc.zyngier@arm.com>]

On 23/11/15 17:38, Thomas Gleixner wrote:
> 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>
> 

Hi Bjorn,

Do you have any objection to taking this patch? It fixes a real issue
for drivers not using the generic MSI domains.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...