powerpc: Add missing error check to prom_find_boot_cpu()

[firefly-linux-kernel-4.4.55.git] / arch / powerpc / kernel / prom_init.c

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 7b89e7b305e6b15fb51cfe5cf601dec100e83b7a..3139533640fc8e263a08c9f4570b7bd9fd3accc4 100644 (file)
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2664,6 +2664,9 @@ static void __init prom_find_boot_cpu(void)
 
        cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu);
 
+       if (!PHANDLE_VALID(cpu_pkg))
+               return;
+
        prom_getprop(cpu_pkg, "reg", &rval, sizeof(rval));
        prom.cpu = be32_to_cpu(rval);