Re: [PATCH v3 8/9] drm/tegra: vic: Implement get_streamid_offset

[Dmitry Osipenko]

21.02.2022 14:44, Mikko Perttunen пишет:
> On 2/19/22 20:54, Dmitry Osipenko wrote:
>> 19.02.2022 21:49, Dmitry Osipenko пишет:
>>> 18.02.2022 14:39, Mikko Perttunen пишет:
>>>> +static int vic_get_streamid_offset(struct tegra_drm_client *client)
>>>> +{
>>>> +    struct vic *vic = to_vic(client);
>>>> +    int err;
>>>> +
>>>> +    err = vic_load_firmware(vic);
>>>
>>> You can't invoke vic_load_firmware() while RPM is suspended. Either
>>> replace this with RPM get/put or do something else.
> 
> Why not, I'm not seeing any HW accesses in vic_load_firmware? Although
> it looks like it might race with the vic_load_firmware call in
> vic_runtime_resume which probably needs to be fixed.

It was not clear from the function's name that h/w is untouched, I read
"load" as "upload" and then looked at vic_runtime_resume(). I'd rename
vic_load_firmware() to vic_prepare_firmware_image().

And yes, technically lock is needed.