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Commit f77d55a3 authored by Julien CHAUVEAU's avatar Julien CHAUVEAU Committed by Greg Kroah-Hartman
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serial: 8250_dw: get index of serial line from DT aliases 



Get index of serial line from device tree using function of_alias_get_id().
If no alias is found, the 8250 core takes care of incrementing the line number.

Signed-off-by: default avatarJulien CHAUVEAU <julien.chauveau@neo-technologies.fr>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1bd83245

drivers/tty/serial/8250/8250_dw.c

+6 −0
Original line number Diff line number Diff line
@@ -258,6 +258,7 @@ static int dw8250_probe_of(struct uart_port *p, 
	struct uart_8250_port *up = up_to_u8250p(p);

	u32			val;

	bool has_ucv = true;

	int id;



	if (of_device_is_compatible(np, "cavium,octeon-3860-uart")) {

#ifdef __BIG_ENDIAN
@@ -301,6 +302,11 @@ static int dw8250_probe_of(struct uart_port *p, 
	if (!of_property_read_u32(np, "reg-shift", &val))

		p->regshift = val;



	/* get index of serial line, if found in DT aliases */

	id = of_alias_get_id(np, "serial");

	if (id >= 0)

		p->line = id;



	/* clock got configured through clk api, all done */

	if (p->uartclk)

		return 0;