[RFC PATCH 2/2] regmap: Reject fast_io regmap configurations with RBTREE and MAPLE caches

[Guenter Roeck]

On 7/21/23 08:03, Mark Brown wrote:
> On Fri, Jul 21, 2023 at 04:53:42PM +0200, Marek Szyprowski wrote:
> 
>> This patch, which landed in today's linux-next, breaks operation of the
>> RockChip's VOP2 DRM driver
>> (drivers/gpu/drm/rockchip/rockchip_drm_vop2.c). I'm not sure what is the
>> proper fix in this case. Should one change the cache type to REGCACHE_FLAT?
> 
> Actually Guenter and Dan have made the required updates to support this
> so the warning will be gone soon (hopefully Dan will send his patch
> properly shortly).

Do you plan to revert this patch ? If not regmap_init() would still fail
for the affected drivers, even after my and Dan's patches have been applied.

Thanks,
Guenter