[PATCH v2] vio: make remove callback return void

[Anatoly Pugachev]

On Wed, Feb 24, 2021 at 11:17 AM Uwe Kleine-König <uwe at kleine-koenig.org> wrote:
>
> The driver core ignores the return value of struct bus_type::remove()
> because there is only little that can be done. To simplify the quest to
> make this function return void, let struct vio_driver::remove() return
> void, too. All users already unconditionally return 0, this commit makes
> it obvious that returning an error code is a bad idea and makes it
> obvious for future driver authors that returning an error code isn't
> intended.
>
> Note there are two nominally different implementations for a vio bus:
> one in arch/sparc/kernel/vio.c and the other in
> arch/powerpc/platforms/pseries/vio.c. I didn't care to check which
> driver is using which of these busses (or if even some of them can be
> used with both) and simply adapt all drivers and the two bus codes in
> one go.

Applied over current git kernel, boots on my sparc64 LDOM (sunvdc
block driver which uses vio).
Linux ttip 5.11.0-10201-gc03c21ba6f4e-dirty #189 SMP Wed Feb 24
13:48:37 MSK 2021 sparc64 GNU/Linux
boot logs (and kernel config) on [1] for "5.11.0-10201-gc03c21ba6f4e-dirty".
Up to you to add "tested-by".
Thanks.

1. https://github.com/mator/sparc64-dmesg

PS: going to check with ppc64 later as well on LPAR (uses vio).