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

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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.



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