During device bringup it might be that we can't access the debugfs files. Return -ENODEV until the registration is completed on access. Signed-off-by: Christian König <christian.koenig@xxxxxxx> --- drivers/gpu/drm/drm_debugfs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index d90d0827bfad..8a4c90fd9f02 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -150,6 +150,9 @@ static int drm_debugfs_open(struct inode *inode, struct file *file) { struct drm_info_node *node = inode->i_private; + if (!device_is_registered(node->minor->kdev)) + return -ENODEV; + return single_open(file, node->info_ent->show, node); } @@ -157,6 +160,10 @@ static int drm_debugfs_entry_open(struct inode *inode, struct file *file) { struct drm_debugfs_entry *entry = inode->i_private; struct drm_debugfs_info *node = &entry->file; + struct drm_minor *minor = entry->dev->primary ?: entry->dev->accel; + + if (!device_is_registered(minor->kdev)) + return -ENODEV; return single_open(file, node->show, entry); } -- 2.34.1