drm/tegra: Detach panel when a connector is removed

When the DRM device is torn down and the connector is removed, make sure
to detach the panel to make sure there are no dangling pointers.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index 022462d3a413..6a5c7b81fbc5 100644
--- a/drivers/gpu/drm/tegra/output.c
+++ b/drivers/gpu/drm/tegra/output.c
@@ -347,5 +347,8 @@ int tegra_output_exit(struct tegra_output *output)
         if (gpio_is_valid(output->hpd_gpio))
                 disable_irq(output->hpd_irq);
 
+        if (output->panel)
+                drm_panel_detach(output->panel);
+
         return 0;
 }