tty: serial_core: convert uart_open to use tty_port_open

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tty_port_open handles much of the common parts of tty opening. Convert
uart_open to use it and move the serial_core specific parts into
tty_port.activate function. This will be needed to use tty_port functions
directly from in kernel clients.

The tricky part is uart_port_startup can return positive values to allow
setserial to configure the port. We now return the positive value to
tty_port_open so that the tty is not marked as initialized and then set the
return value in uart_open to 0.

Cc: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Rob Herring 2016-08-22 17:39:09 -05:00 • committed by Greg Kroah-Hartman

parent ebaa81c728

commit b3b5764618

1 changed files with 23 additions and 47 deletions

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drivers/tty/serial/serial_core.c

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