Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b30fd1a6 authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Greg Kroah-Hartman
Browse files

tty: serial: lpc32xx_hs: fix missing console boot messages 



When probing the HSUART, it is put in loopback mode in order to prevent a
potential issue that may happen on RX (Errata HSUART.1).

serial_lpc32xx_startup() moves it out of loopback mode but this is too late
to get the kernel boot messages before userspace opens the device.

Also get out of loopback mode in lpc32xx_hsuart_console_setup().

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7d470ebf

drivers/tty/serial/lpc32xx_hs.c

+4 −0
Original line number Diff line number Diff line
@@ -151,6 +151,8 @@ static void lpc32xx_hsuart_console_write(struct console *co, const char *s, 
	local_irq_restore(flags);

}



static void lpc32xx_loopback_set(resource_size_t mapbase, int state);



static int __init lpc32xx_hsuart_console_setup(struct console *co,

					       char *options)

{
@@ -170,6 +172,8 @@ static int __init lpc32xx_hsuart_console_setup(struct console *co, 
	if (options)

		uart_parse_options(options, &baud, &parity, &bits, &flow);



	lpc32xx_loopback_set(port->mapbase, 0); /* get out of loopback mode */



	return uart_set_options(port, co, baud, parity, bits, flow);

}