Re: [PATCH v5] arm pl011 serial: support multi-irq request

Bing Fan
2021-07-27T02:57:15Z

hello,

Thanks very much for analysis. And i have get the cause of the problem.

I will add pl011_allocate_multi_irqs/pl011_release_multi_irqs functions
for amba drivers,

and call them in pl011_startup/pl011_shutdown respectively.

Reserved pl011_allocate_irq/pl011_release_irq functions for platform
drivers.

Please help to confirm, is this ok?

在 7/27/2021 5:14, Robin Murphy 写道:
> On 2021-07-26 21:56, Qian Cai wrote:
>>
>>
>> On 7/26/2021 4:36 PM, Robin Murphy wrote:
>>> The important point you're missing, but which the KASAN dump does
>>> hint at, is
>>> that that is a machine with SBSA generic UARTs booting via ACPI - I
>>> know it
>>> doesn't do DT at all because I have one too. What matters there is
>>> that pl011
>>> binds as a platform driver, *not* an amba driver.
>>
>> Thanks for pointing out, Robin. I just yet to see an ARM server
>> booting from DT
>> those days.
>
> Unlikely in production datacentre/cloud environments, indeed, although
> some of the mid-range kit like LX2160 does start to blur the line of
> what might be considered "server", and that's one example which *does*
> have full-featured DT support (even if it also aspires to ACPI...)
>
> What I thought was worth clarifying for the general audience is that
> the relevant aspects of "server" here should in fact still be possible
> to reproduce on something like a Raspberry Pi or a tiny QEMU VM, if
> one can figure out the ACPI runes :)
>
> Thanks,
> Robin.