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powerpc: Look for "stdout-path" when setting up legacy consoles 

Commit 78e5dfea84 ("powerpc: dts: replace 'linux,stdout-path' with
'stdout-path'") broke the default console on a number of embedded
PowerPC systems, because it failed to also update the code in
arch/powerpc/kernel/legacy_serial.c to look for that property in
addition to the old one.

This fixes it.

Fixes: 78e5dfea84 ("powerpc: dts: replace 'linux,stdout-path' with 'stdout-path'")
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2018-11-30 14:54:09 +11:00 committed by Michael Ellerman
parent 78e7b15e17
commit bf3d6afbb2
1 changed files with 5 additions and 1 deletions
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6
arch/powerpc/kernel/legacy_serial.c
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@ -372,6 +372,8 @@ void __init find_legacy_serial_ports(void)
/* Now find out if one of these is out firmware console */
path = of_get_property(of_chosen, "linux,stdout-path", NULL);
if (path == NULL)
path = of_get_property(of_chosen, "stdout-path", NULL);
if (path != NULL) {
stdout = of_find_node_by_path(path);
if (stdout)
@ -595,8 +597,10 @@ static int __init check_legacy_serial_console(void)
/* We are getting a weird phandle from OF ... */
/* ... So use the full path instead */
name = of_get_property(of_chosen, "linux,stdout-path", NULL);
if (name == NULL)
name = of_get_property(of_chosen, "stdout-path", NULL);
if (name == NULL) {
DBG(" no linux,stdout-path !\n");
DBG(" no stdout-path !\n");
return -ENODEV;
}
prom_stdout = of_find_node_by_path(name);