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

Simon Glass sjg at chromium.org
Mon Oct 12 05:35:32 CEST 2020


Hi Marek,

On Sun, 11 Oct 2020 at 10:03, Marek Vasut <marek.vasut at gmail.com> 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.
>
> Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Tom Rini <trini at konsulko.com>
> ---
>  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?

Regards,
Simon


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