[PATCH v2 1/3] firmware: arm_ffa: Split the response out of ffa_msg_send_direct_req2()

[Hanjun Guo]

On 2026/9/22 1:49, Jamie Nguyen wrote:
>> The kernel document was updated for this, please update the
>> rest of two patches as well.
> 
> I'll update all three patches to use:
> 
>      Assisted-by: LLM
> 
>> As you noted in the cover letter, the AML thread will stall here if no
>> response, block the ACPI interpreter and the ACPI global lock when
>> the field is Lock-flagged, so do we have some warnings if that happened?
> 
> There's no warning today. Would a rate-limited warning after a prolonged
> wait be useful here? I'm hesitant because that would also affect non-ACPI
> callers of this helper, and I don't believe FF-A defines a threshold after
> which the wait is abnormal.

Let's keep the code as it is.

> 
>> resp_regs[1] is confusing, comment here it links to X1 register
>> is better.
> 
> I'll clarify that resp_regs[1] is X2; resp_regs[0] is X1.

Sorry, but it was confusing me :)

Thanks
Hanjun