[PATCH] staging: vc04_services: vchiq_arm: Fix initialisation check

[Stefan Wahren]

Hi Kieran,

Am 14.06.24 um 13:36 schrieb Kieran Bingham:
> Hi Stefan,
>
> Sorry, indeed I completely missed this mail.
>
> Quoting Stefan Wahren (2024-06-13 21:01:42)
>> Hi Kieran,
>>
>> Am 13.06.24 um 21:41 schrieb Kieran Bingham:
>>> The vchiq_state used to be obtained through an accessor
>>> which would validate that the VCHIQ had been initialised
>>> correctly with the remote.
>>>
>>> In commit 42a2f6664e18 ("staging: vc04_services: Move global g_state to
>>> vchiq_state") the global state was moved to the vchiq_mgnt structures
>>> stored as a vchiq instance specific context. This conversion removed the
>>> helpers and instead replaced users of this helper with the assumption
>>> that the state is always available and the remote connected.
>>>
>>> Fix this broken assumption by re-introducing the logic that was lost
>>> during the conversion.
>> thank you for sending this patch. Maybe it's worth to mention that this
>> patch also drop some unnecessary NULL checks of state.
> I don't understand this comment. Nothing is dropped is it?
>
> The newly added vchiq_remote_initialised() is itself a null-check too!
the vchiq_remote_initialised() only checks the member remote, but not
state itself. From my point of view the null-check for state is
unnecessary, because most of the code already assumed that state is not
null like e.g. in vchiq_open().