transfer_lock
spin_lock_irqsave(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_lock_irqsave(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_lock_irqsave(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_lock_irqsave(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_lock_irqsave(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_lock_irqsave(&dsi->transfer_lock, flags);
spin_unlock_irqrestore(&dsi->transfer_lock, flags);
spin_lock_init(&dsi->transfer_lock);
transfer_lock(data_vio, lock);
spinlock_t transfer_lock; /* protects transfer_list */