[PATCH v3 0/7] drm/bridge_connector: perform HPD enablement automatically

[neil.armstrong at linaro.org]

On 07/02/2023 11:19, Geert Uytterhoeven wrote:
> Hi Neil,
> 
> On Tue, Feb 7, 2023 at 11:02 AM Geert Uytterhoeven <geert at linux-m68k.org> wrote:
>> On Tue, Feb 7, 2023 at 10:59 AM Neil Armstrong
>> <neil.armstrong at linaro.org> wrote:
>>> On 07/02/2023 10:40, Geert Uytterhoeven wrote:
>>>> On Tue, Jan 10, 2023 at 5:37 PM Dmitry Baryshkov
>>>> <dmitry.baryshkov at linaro.org> wrote:
>>>>> On 10/01/2023 08:57, Laurentiu Palcu wrote:
>>>>>> On Mon, Jan 09, 2023 at 10:26:28PM +0200, Dmitry Baryshkov wrote:
>>>>>>> On 09/01/2023 18:21, Laurentiu Palcu wrote:
>>>>>>>> It looks like there are some issues with this patchset... :/ I just
>>>>>>>> fetched the drm-tip and, with these patches included, the "Hot plug
>>>>>>>> detection already enabled" warning is back for i.MX DCSS.
>>>>>>>
>>>>>>> Could you please provide a backtrace?
>>>>>>
>>>>>> Sure, see below:
>>>>>
>>>>> I wondered, why didn't I see this on msm, my main target nowadays. The
>>>>> msm driver is calling msm_kms_helper_poll_init() after initializing
>>>>> fbdev, so all previous kms_helper_poll_enable() calls return early.
>>>>>
>>>>> I think I have the fix ready. Let me test it locally before posting.
>>>>
>>>> Is this fix available?
>>>> Do you have a lore link?
>>>
>>> The fix at [1] has been applied on 2023-01-26
>>>
>>> [1] https://lore.kernel.org/all/20230124104548.3234554-1-dmitry.baryshkov@linaro.org/
>>
>> Applied where? linux-next does not have it.
> 
> commit cbf143b282c64e59
> ("drm/probe_helper: extract two helper functions") in next-20230127
> next-20230130 next-20230131
> commit d33a54e3991dfce8
> ("drm/probe_helper: sort out poll_running vs poll_enabled") in
> next-20230127 next-20230130 next-20230131
> 
> but not in any later version?

$ git log --oneline --author=dmitry next-20230207 drivers/gpu/drm/drm_probe_helper.c
c8268795c9a9 drm/probe-helper: enable and disable HPD on connectors
78b991ccfa64 drm/poll-helper: merge drm_kms_helper_poll_disable() and _fini()

$ cat Next/SHA1s | grep drm
drm-fixes       4ec5183ec48656cec489c49f989c508b68b518e3
drm-intel-fixes 4c7b9344cadbed477372c75e3c0a8cfd542f5990
drm-misc-fixes  8f20660f053cefd4693e69cfff9cf58f4f7c4929
drm             1c0db6d84f8e0ac8f14178f13250e36ebcf457ee
drm-misc        d20a8f409259f1782f080b434054854020878f23
drm-intel       155c6b16eec2eaaaf6c71abf2d5e71641770d7ba
drm-tegra       b9930311641cf2ed905a84aabe27e8f3868aee4a
drm-msm         dbd7a2a941b8cbf9e5f79a777ed9fe0090eebb61
drm-msm-lumag   1d233b1cb149ec78c20fac58331b27bb460f9558
imx-drm         927d8fd465adbaaad6cce82f840d489d7c378f29

so weren't merged into drm-misc, I'll ping Thomas & Maxime on irc.

Neil

> 
> Gr{oetje,eeting}s,
> 
>                          Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                  -- Linus Torvalds