drm/amdgpu: Only create mes event log debugfs when mes is enabled

Skip the debugfs file creation for mes event log if the GPU
doesn't use MES. This to prevent potential kernel oops when
user try to read the event log in debugfs on a GPU without MES

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
index 1f3dfbb6bb160d608de9d5b3be2eb546b79b95d3..a98e03e0a51f1f741895d253f896e76de29f9aec 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -1565,9 +1565,9 @@ void amdgpu_debugfs_mes_event_log_init(struct amdgpu_device *adev)
 #if defined(CONFIG_DEBUG_FS)
        struct drm_minor *minor = adev_to_drm(adev)->primary;
        struct dentry *root = minor->debugfs_root;
-
-       debugfs_create_file("amdgpu_mes_event_log", 0444, root,
-                           adev, &amdgpu_debugfs_mes_event_log_fops);
+       if (adev->enable_mes)
+               debugfs_create_file("amdgpu_mes_event_log", 0444, root,
+                                   adev, &amdgpu_debugfs_mes_event_log_fops);
 
 #endif
 }