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| author |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-11-30 14:54:09 +1100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-12-01 14:37:36 +1100 |
| commit | bf3d6afbb234156749b640b6c50f714967a85964 (patch) | |
| tree | 2c80fc83f2703a936479bac2910e4d56cd1f5aed /arch/powerpc/kernel/legacy_serial.c | |
| parent | powerpc/msi: Fix NULL pointer access in teardown code (diff) | |
| download | linux-dev-bf3d6afbb234156749b640b6c50f714967a85964.tar.xz linux-dev-bf3d6afbb234156749b640b6c50f714967a85964.zip | |
powerpc: Look for "stdout-path" when setting up legacy consoles
Commit 78e5dfea84dc ("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: 78e5dfea84dc ("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>
Diffstat (limited to 'arch/powerpc/kernel/legacy_serial.c')
| -rw-r--r-- | arch/powerpc/kernel/legacy_serial.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c index 33b34a58fc62..5b9dce17f0c9 100644 --- a/arch/powerpc/kernel/legacy_serial.c +++ b/arch/powerpc/kernel/legacy_serial.c @@ -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); |