4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ayan Kumar Halder <ayan.halder@xxxxxxx>
[ Upstream commit 109c4d18e57445afcaf728b8716a69375a3daab2 ]
One needs to ensure that the crtcs are shutdown so that the
drm_crtc_state->connector_mask reflects that no connectors
are currently active. Further, it reduces the reference
count for each connector. This ensures that the connectors
and encoders can be cleanly removed either when _unbind
is called for the corresponding drivers or by
drm_mode_config_cleanup().
We need drm_atomic_helper_shutdown() to be called before
component_unbind_all() otherwise the connectors attached to the
component device will have the wrong reference count value and will not
be cleanly removed.
Signed-off-by: Ayan Kumar Halder <ayan.halder@xxxxxxx>
Acked-by: Liviu Dudau <liviu.dudau@xxxxxxx>
Signed-off-by: Liviu Dudau <liviu.dudau@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/arm/malidp_drv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -278,7 +278,6 @@ static int malidp_init(struct drm_device
static void malidp_fini(struct drm_device *drm)
{
- drm_atomic_helper_shutdown(drm);
drm_mode_config_cleanup(drm);
}
@@ -646,6 +645,7 @@ vblank_fail:
malidp_de_irq_fini(drm);
drm->irq_enabled = false;
irq_init_fail:
+ drm_atomic_helper_shutdown(drm);
component_unbind_all(dev, drm);
bind_fail:
of_node_put(malidp->crtc.port);
@@ -681,6 +681,7 @@ static void malidp_unbind(struct device
malidp_se_irq_fini(drm);
malidp_de_irq_fini(drm);
drm->irq_enabled = false;
+ drm_atomic_helper_shutdown(drm);
component_unbind_all(dev, drm);
of_node_put(malidp->crtc.port);
malidp->crtc.port = NULL;
