shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-04-02 19:23:01 +09:00
Code Issues Packages Projects Releases Wiki Activity

earlycon: add reg-offset to physical address before mapping

Browse Source 
commit 1f66dd36bb upstream.

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>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: stable@vger.kernel.org
Fixes: 088da2a176 ("of: earlycon: Initialize port fields from DT properties")
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greentime Hu
2018-02-13 17:09:08 +08:00
committed by Greg Kroah-Hartman
parent fbe1ad9742
commit bd0d673023
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/tty/serial/earlycon.c
View File

@@ -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);