From 31cb9a8575ca04f47ea113434d4782b695638b62 Mon Sep 17 00:00:00 2001 From: Eugeniy Paltsev Date: Mon, 21 Aug 2017 19:22:13 +0300 Subject: [PATCH] earlycon: initialise baud field of earlycon device structure MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit For now baud field of earlycon structure device is't initialised at all in of_setup_earlycon (in oppositŠµ to register_earlycon). So when I use stdout-path to point earlycon device (like stdout-path = &serial or stdout-path = "serial:115200n8") baud field of earlycon device structure remains uninitialised and earlycon initialization is not performed correctly as of_setup_earlycon is used. When pass all arguments via bootargs (like bootargs = "earlycon=uart8250,mmio32,0xf0005000,115200n8") initialization is performed correctly as register_earlycon is used. So initialise baud field of earlycon device structure by value of "current-speed" property from device tree or from options (if they exist) when we use of_setup_earlycon Signed-off-by: Eugeniy Paltsev Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/earlycon.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c index 335933e1822c..98928f082d87 100644 --- a/drivers/tty/serial/earlycon.c +++ b/drivers/tty/serial/earlycon.c @@ -282,7 +282,12 @@ int __init of_setup_earlycon(const struct earlycon_id *match, } } + val = of_get_flat_dt_prop(node, "current-speed", NULL); + if (val) + early_console_dev.baud = be32_to_cpu(*val); + if (options) { + early_console_dev.baud = simple_strtoul(options, NULL, 0); strlcpy(early_console_dev.options, options, sizeof(early_console_dev.options)); }