ARM: 7842/1: MCPM: don't explode if invoked without being initialized first

[karo-tx-linux.git] / arch / arm / common / mcpm_entry.c

diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c
index 370236dd1a03309ee3b123e705aa80132c908427..990250965f2cfb4e4e3a984678fcf62eedbcdb8d 100644 (file)
--- a/arch/arm/common/mcpm_entry.c
+++ b/arch/arm/common/mcpm_entry.c
@@ -51,7 +51,8 @@ void mcpm_cpu_power_down(void)
 {
        phys_reset_t phys_reset;
 
-       BUG_ON(!platform_ops);
+       if (WARN_ON_ONCE(!platform_ops || !platform_ops->power_down))
+               return;
        BUG_ON(!irqs_disabled());
 
        /*
@@ -93,7 +94,8 @@ void mcpm_cpu_suspend(u64 expected_residency)
 {
        phys_reset_t phys_reset;
 
-       BUG_ON(!platform_ops);
+       if (WARN_ON_ONCE(!platform_ops || !platform_ops->suspend))
+               return;
        BUG_ON(!irqs_disabled());
 
        /* Very similar to mcpm_cpu_power_down() */