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:

quoted

On 7/26/2021 4:36 PM, Robin Murphy wrote:

quoted

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.