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.edwor...@renesas.com>
>> Tested-by: Phil Edworthy <phil.edwor...@renesas.com>
>> Signed-off-by: Marc Zyngier <marc.zyng...@arm.com>
>
> Acked-by: Thomas Gleixner <t...@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...
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
