[PATCH] drm/amd: fix hotplug race at startup

[Young Xiao]

We should check mode_config_initialized flag in amdgpu_hotplug_work_func.

See commit 7f98ca454ad3 ("drm/radeon: fix hotplug race at startup") for details.

Signed-off-by: Young Xiao <92siuy...@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index af4c3b1..13186d6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -85,6 +85,9 @@ static void amdgpu_hotplug_work_func(struct work_struct *work)
        struct drm_mode_config *mode_config = &dev->mode_config;
        struct drm_connector *connector;
 
+       if (!adev->mode_info.mode_config_initialized)
+               return;
+
        mutex_lock(&mode_config->mutex);
        list_for_each_entry(connector, &mode_config->connector_list, head)
                amdgpu_connector_hotplug(connector);
-- 
2.7.4