drm/rockchip: rgb: don't count non-existent devices when
From: Heiko Stuebner <heiko.stuebner@...> Date: Thu, 9 Jan 2020 21:44:49 +0100
Commit-Message
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@...>
Patch-Comment
drivers/gpu/drm/rockchip/rockchip_rgb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Statistics
- 2 lines added
- 1 lines removed
Changes
------------------- drivers/gpu/drm/rockchip/rockchip_rgb.c --------------------
index ae730275a34f..79a7e60633e0 100644
@@ -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 subdriver (> 0) or error case (< 0), ignore entry */
+ if (rockchip_drm_endpoint_is_subdriver(endpoint) != 0)
continue;
child_count++;