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| author | Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> | 2017-08-21 18:22:13 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-31 18:47:31 +0200 |
| commit | 31cb9a8575ca04f47ea113434d4782b695638b62 (patch) | |
| tree | 0e59adc66bebe835aaf75bc713cb8a42546d9141 /drivers/tty/serial/earlycon.c | |
| parent | tty: hvcs: make ktermios const (diff) | |
| download | linux-31cb9a8575ca04f47ea113434d4782b695638b62.tar.xz linux-31cb9a8575ca04f47ea113434d4782b695638b62.zip | |
earlycon: initialise baud field of earlycon device structure
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 <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/earlycon.c')
| -rw-r--r-- | drivers/tty/serial/earlycon.c | 5 |
1 files changed, 5 insertions, 0 deletions
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)); } |