drm: imx: callback after probe deferral not working

[Daniel Stone]

Hi Akshay,

On 1 February 2016 at 19:02, Akshay Bhat <akshay.bhat at timesys.com> wrote:
> On 02/01/2016 07:11 AM, Liviu Dudau wrote:
>> On Fri, Jan 29, 2016 at 05:12:28PM -0500, Akshay Bhat wrote:
>>> On 01/28/2016 05:29 PM, Rob Clark wrote:
>>> Also from the original log you can see that there are a lot of modules
>>> that
>>> are loaded after the drm driver does a probe defer, yet there is no
>>> entries
>>> in the bootlog for the drm driver being re-probed. In the next-20151202
>>> kernel log you can see it being re-probed. This points to the drm probe
>>> deferral being broken.
>>
>> I think your problem is similar to what Tixy has found when testing HDLCD,
>> which also uses the components API. He has posted a patch here:
>>
>> http://www.spinics.net/lists/arm-kernel/msg477090.html
>>
>> Russell has added it to his branch, seems to be available in linux-next
>> as commit 57480484f9f7631738ef2.
>
> Liviu,
>
> I re-tested with next-20160201 which contains the above patch and still see
> the issue where the re-probe does not work.

Could you please try with this patch? The component system was broken
(with the same result) in a slightly different way by the same
patchset Lixy had to fix; this also kept Rockchip DRM from loading.

http://lkml.iu.edu/hypermail/linux/kernel/1602.1/00832.html

Cheers,
Daniel