[PATCH 1/2] dm: core: Add late driver remove option

Marek Vasut marek.vasut at gmail.com
Wed Oct 21 00:27:45 CEST 2020


On 10/15/20 5:05 PM, Simon Glass wrote:

[...]

>>>> Add another flag to the DM core which could be assigned to drivers and
>>>> which makes those drivers call their remove callbacks last, just before
>>>> booting OS and after all the other drivers finished with their remove
>>>> callbacks. This is necessary for things like clock drivers, where the
>>>> other drivers might depend on the clock driver in their remove callbacks.
>>>> Prime example is the mmc subsystem, which can reconfigure a card from HS
>>>> mode to slower modes in the remove callback and for that it needs to
>>>> reconfigure the controller clock.
>>
>> [...]
>>
>>>>  arch/arm/lib/bootm.c            |  1 +
>>>>  board/Marvell/octeontx2/board.c |  4 ++--
>>>>  drivers/core/device-remove.c    | 11 ++++++++---
>>>>  drivers/core/root.c             |  2 ++
>>>>  drivers/core/uclass.c           | 32 +++++++++++++++++++++++++-------
>>>>  include/dm/device.h             |  4 ++++
>>>>  include/dm/uclass-internal.h    |  3 ++-
>>>>  test/dm/core.c                  | 21 ++++++++++++---------
>>>>  test/dm/test-main.c             | 30 +++++++++++++++++-------------
>>>>  9 files changed, 73 insertions(+), 35 deletions(-)
>>>
>>> I remember seeing a similar patch before. Do you have a change log?
>>
>> Nothing changed since except for the octeon fix, I still require this
>> patch in to correctly stop SD/MMC controller and then the clock before
>> booting Linux.
> 
> Did you see my comments on the previous version of the patch? These
> need to be addressed.

I believe all comments are addressed. What is the problem with this patch ?


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