| From | Greentime Hu <> | Subject | [PATCH v6 04/36] earlycon: add reg-offset to physical address before mapping | Date | Mon, 15 Jan 2018 13:53:12 +0800 |
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From: Greentime Hu <greentime@andestech.com>
It will get the wrong virtual address because port->mapbase is not added the correct reg-offset yet. We have to update it before earlycon_map() is called
Signed-off-by: Greentime Hu <greentime@andestech.com> --- drivers/tty/serial/earlycon.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c index 98928f0..17dba0a 100644 --- a/drivers/tty/serial/earlycon.c +++ b/drivers/tty/serial/earlycon.c @@ -253,11 +253,12 @@ int __init of_setup_earlycon(const struct earlycon_id *match, } port->mapbase = addr; port->uartclk = BASE_BAUD * 16; - port->membase = earlycon_map(port->mapbase, SZ_4K); val = of_get_flat_dt_prop(node, "reg-offset", NULL); if (val) port->mapbase += be32_to_cpu(*val); + port->membase = earlycon_map(port->mapbase, SZ_4K); + val = of_get_flat_dt_prop(node, "reg-shift", NULL); if (val) port->regshift = be32_to_cpu(*val); -- 1.7.9.5
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