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um's put_char only calls write. And the tty layer/disciplines do the same if put_char is NULL. So we can safely remove this put_char wrapper. Signed-off-by: Jiri Slaby <[email protected]> Cc: Jeff Dike <[email protected]> Cc: Richard Weinberger <[email protected]> Cc: Anton Ivanov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>