From: Thierry Reding <[email protected]>
The HDMI hotplug signal may toggle after the DRM driver has been
unloaded. Make sure not to call into DRM if that's the case.
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
drivers/gpu/drm/tegra/output.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index 6b393cfbb5e7..def74914dd72 100644
--- a/drivers/gpu/drm/tegra/output.c
+++ b/drivers/gpu/drm/tegra/output.c
@@ -181,7 +181,8 @@ static irqreturn_t hpd_irq(int irq, void *data)
{
struct tegra_output *output = data;
- drm_helper_hpd_irq_event(output->connector.dev);
+ if (output->connector.dev)
+ drm_helper_hpd_irq_event(output->connector.dev);
return IRQ_HANDLED;
}
--
2.1.2
