Re: [PATCH 20/20] [RFC] sh: dma: Remove unused functionality

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Hi Geert,

On Thu, 2024-05-02 at 09:03 +0200, Geert Uytterhoeven wrote:
> On Wed, May 1, 2024 at 3:58 PM John Paul Adrian Glaubitz
> <glaubitz@physik.fu-berlin.de> wrote:
> > On Wed, 2024-05-01 at 11:12 +0200, John Paul Adrian Glaubitz wrote:
> > > On Fri, 2024-03-01 at 22:02 +0100, Geert Uytterhoeven wrote:
> > > > dma_extend(), get_dma_info_by_name(), register_chan_caps(), and
> > > > request_dma_bycap() are unused.  Remove them, and all related code.
> > > > 
> > > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> 
> > > I assume we could re-add these again in case we need them, but it would be good
> > > if Yoshinori could comment on whether we should keep these functions or not.
> > 
> > I was wondering: Could there be any userland tools using these DMA functions?
> 
> They cannot be called from userspace, as there is no API for that.
> They can only be called from inside the kernel, or from a kernel module
> (possibly out-of-tree).

OK, thanks for the confirmation. Then I think it's safe to remove them.

I will apply both your series tonight and the rest of the patches except
for the one that moves the paging_init() around as it turns out the current
positioning is intentional.

Adrian

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