MIPS: Octeon: board_type_to_string: return NULL for unsupported board

Return NULL for unsupported board.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12581/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 8ffc1f108239..4759494c3ff4 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -466,9 +466,14 @@ static char __read_mostly octeon_system_type[80];
 
 static int __init init_octeon_system_type(void)
 {
+        char const *board_type;
+
+        board_type = cvmx_board_type_to_string(octeon_bootinfo->board_type);
+        if (board_type == NULL)
+                board_type = "Unsupported Board";
+
         snprintf(octeon_system_type, sizeof(octeon_system_type), "%s (%s)",
-                cvmx_board_type_to_string(octeon_bootinfo->board_type),
-                octeon_model_get_string(read_c0_prid()));
+                 board_type, octeon_model_get_string(read_c0_prid()));
 
         return 0;
 }