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tty_flip.h currently includes whole tty.h. In fact, it needs only tty_buffer and tty_port definitions. Provided, we separated tty_buffer and tty_port into separate headers in the previous patch, we can make tty_flip.h to include only much lighter tty_buffer.h and tty_port.h. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20210723103147.18250-9-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>