Messages in this thread Patch in this message | | | From | Tomi Valkeinen <> | Date | Fri, 04 Aug 2023 13:48:12 +0300 | Subject | [PATCH 3/4] drm/bridge: lt8912b: Manually disable HPD only if it was enabled |
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lt8912b only calls drm_bridge_hpd_enable() if it creates a connector and the next bridge has DRM_BRIDGE_OP_HPD set. However, when calling drm_bridge_hpd_disable() it misses checking if a connector was created, calling drm_bridge_hpd_disable() even if HPD was nenver enabled. I don't see any issues causing by this wrong call, though.
Add the check to avoid wrongly calling drm_bridge_hpd_disable().
Fixes: 3b0a01a6a522 ("drm/bridge: lt8912b: Add hot plug detection") Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> --- drivers/gpu/drm/bridge/lontium-lt8912b.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c index 2d752e083433..9ee639e75a1c 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c @@ -587,7 +587,7 @@ static void lt8912_bridge_detach(struct drm_bridge *bridge) lt8912_hard_power_off(lt); - if (lt->hdmi_port->ops & DRM_BRIDGE_OP_HPD) + if (lt->connector.dev && lt->hdmi_port->ops & DRM_BRIDGE_OP_HPD) drm_bridge_hpd_disable(lt->hdmi_port); } -- 2.34.1
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