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Commit d856c666 authored by Russell King's avatar Russell King Committed by Russell King
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[SERIAL] Add comment about early_serial_setup() 



early_serial_setup() must not be called after console initialisation.
Add a comment prior to the function explicitly stating this.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 85edae14

drivers/serial/8250.c

+6 −0
Original line number Diff line number Diff line
@@ -2326,6 +2326,12 @@ static struct uart_driver serial8250_reg = { 
	.cons			= SERIAL8250_CONSOLE,

};



/*

 * early_serial_setup - early registration for 8250 ports

 *

 * Setup an 8250 port structure prior to console initialisation.  Use

 * after console initialisation will cause undefined behaviour.

 */

int __init early_serial_setup(struct uart_port *port)

{

	if (port->line >= ARRAY_SIZE(serial8250_ports))