The UEFI driver model invokes the supported() method on every driver every time a connection attempt is made on any handle, and so doing an unconditional DEBUG() print inside this method produced a lot of noise. So let's drop this DEBUG() call from the VirtioSerial driver's Supported() method. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Gerd Hoffmann <kraxel@redhat.com>