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-rw-r--r--arch/arm/include/asm/mcpm.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h
index 0f7b7620e9a..fc82a88f5b6 100644
--- a/arch/arm/include/asm/mcpm.h
+++ b/arch/arm/include/asm/mcpm.h
@@ -76,8 +76,11 @@ int mcpm_cpu_power_up(unsigned int cpu, unsigned int cluster);
*
* This must be called with interrupts disabled.
*
- * This does not return. Re-entry in the kernel is expected via
- * mcpm_entry_point.
+ * On success this does not return. Re-entry in the kernel is expected
+ * via mcpm_entry_point.
+ *
+ * This will return if mcpm_platform_register() has not been called
+ * previously in which case the caller should take appropriate action.
*/
void mcpm_cpu_power_down(void);
@@ -98,8 +101,11 @@ void mcpm_cpu_power_down(void);
*
* This must be called with interrupts disabled.
*
- * This does not return. Re-entry in the kernel is expected via
- * mcpm_entry_point.
+ * On success this does not return. Re-entry in the kernel is expected
+ * via mcpm_entry_point.
+ *
+ * This will return if mcpm_platform_register() has not been called
+ * previously in which case the caller should take appropriate action.
*/
void mcpm_cpu_suspend(u64 expected_residency);