From: Heiko Stuebner <heiko.stueb...@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.stueb...@theobroma-systems.com>
---
drivers/gpu/drm/rockchip/rockchip_rgb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_rgb.c
b/drivers/gpu/drm/rockchip/rockchip_rgb.c
index ae730275a34f..79a7e60633e0 100644
--- a/drivers/gpu/drm/rockchip/rockchip_rgb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_rgb.c
@@ -98,7 +98,8 @@ struct rockchip_rgb *rockchip_rgb_init(struct device *dev,
if (of_property_read_u32(endpoint, "reg", &endpoint_id))
endpoint_id = 0;
- if (rockchip_drm_endpoint_is_subdriver(endpoint) > 0)
+ /* if subdriver (> 0) or error case (< 0), ignore entry */
+ if (rockchip_drm_endpoint_is_subdriver(endpoint) != 0)
continue;
child_count++;
--
2.24.1
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