[PATCH] drm/rockchip: rgb: don't count non-existent devices when determining subdrivers

[Heiko Stuebner]

Am Dienstag, 21. Januar 2020, 23:48:28 CET schrieb Heiko Stuebner:
> From: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>
> 
> rockchip_drm_endpoint_is_subdriver() may also return error codes.
> For example if the target-node is in the disabled state, so no
> platform-device is getting created for it.
> 
> In that case current code would count that as external rgb device,
> which in turn would make probing the rockchip-drm device fail.
> 
> So only count the target as rgb device if the function actually
> returns 0.
> 
> Signed-off-by: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>

applied to drm-misc-next