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serial: core: Colocate crucial structure linkage

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The key function of uart_add_one_port() is to cross-reference the
UART driver's port structure with the serial core's state table;
keep the assignments together and document this crucial association.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2014-10-16 16:54:25 -04:00 committed by Greg Kroah-Hartman
parent 1f0afd1607
commit 2b702b9b68
1 changed files with 4 additions and 3 deletions
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7
drivers/tty/serial/serial_core.c
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@ -2590,12 +2590,13 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)
goto out;
}
/* Link the port to the driver state table and vice versa */
state->uart_port = uport;
state->pm_state = UART_PM_STATE_UNDEFINED;
uport->cons = drv->cons;
uport->state = state;
state->pm_state = UART_PM_STATE_UNDEFINED;
uport->cons = drv->cons;
/*
* If this port is a console, then the spinlock is already
* initialised.