On Wed, Apr 6, 2022 at 6:16 AM Jakub Kicinski <kuba@xxxxxxxxxx> wrote:
>
> The driver for ATM Ambassador devices spews build warnings on
> microblaze. The virt_to_bus() calls discard the volatile keyword.
> The right thing to do would be to migrate this driver to a modern
> DMA API but it seems unlikely anyone is actually using it.
> There had been no fixes or functional changes here since
> the git era begun.
>
> In fact it sounds like the FW loading was broken from 2008
> 'til 2012 - see commit fcdc90b025e6 ("atm: forever loop loading
> ambassador firmware").
>
> Let's remove this driver, there isn't much changing in the APIs,
> if users come forward we can apologize and revert.
>
> Link: https://lore.kernel.org/all/20220321144013.440d7fc0@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
> ---
> CC: myxie@xxxxxxxxxx,gprocida@xxxxxxxxx
> CC: Jesper Juhl <jj@xxxxxxxxxxxxx>
> CC: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> CC: Chas Williams <3chas3@xxxxxxxxx> # ATM
> CC: linux-atm-general@xxxxxxxxxxxxxxxxxxxxx
> CC: tsbogend@xxxxxxxxxxxxxxxx # MIPS
> CC: linux-mips@xxxxxxxxxxxxxxx
> CC: p.zabel@xxxxxxxxxxxxxx # dunno why, get_maintainer
> ---
> arch/mips/configs/gpr_defconfig | 1 -
> arch/mips/configs/mtx1_defconfig | 1 -
> drivers/atm/Kconfig | 25 -
> drivers/atm/Makefile | 1 -
> drivers/atm/ambassador.c | 2400 ------------------------------
> drivers/atm/ambassador.h | 648 --------
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
