On Tue, Oct 05, 2021 at 05:23:02PM +0200, Geert Uytterhoeven wrote:
> The Renesas RPC-IF driver calls devm_reset_control_get_exclusive(),
> which returns -ENOTSUPP if CONFIG_RESET_CONTROLLER is not enabled.
> Even if this error is ignored, later calls to reset_control_reset() will
> fail with a scary WARN_ON() backtrace.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Yes, it is required. With the latter paragraph in the commit message
removed:

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>