GitLab

The variable @bcon has two meanings. It is used several times for iterating
the list of registered consoles. In the meantime, it holds the information
whether a boot console is first in @console_drivers list.

The information about the 1st console driver used to be important for
the decision whether to install the new console by default or not.
It allowed to re-evaluate the variable @need_default_console when
a real console with tty binding has been unregistered in the meantime.

The decision about the default console is not longer affected by @bcon
variable. The current code checks whether the first driver is real
and has tty binding directly.

The information about the first console is still used for two more
decisions:

  1. It prevents duplicate output on non-boot consoles with
     CON_CONSDEV flag set.

  2. Early/boot consoles are unregistered when a real console with
     CON_CONSDEV is registered and @keep_bootcon is not set.

T...