1 files changed, 3 insertions, 4 deletions

diff --git a/arch/arm/mach-at91/include/mach/system.h b/arch/arm/mach-at91/include/mach/system.h
index bfbb612265d6..36af14bc13bb 100644
--- a/arch/arm/mach-at91/include/mach/system.h
+++ b/arch/arm/mach-at91/include/mach/system.h
@@ -28,7 +28,6 @@
 
 static inline void arch_idle(void)
 {
-#ifndef CONFIG_DEBUG_KERNEL
         /*
          * Disable the processor clock.  The processor will be automatically
          * re-enabled by an interrupt or by a reset.
@@ -38,11 +37,11 @@ static inline void arch_idle(void)
 #else
         at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK);
 #endif
-#else
+#ifndef CONFIG_CPU_ARM920T
         /*
          * Set the processor (CP15) into 'Wait for Interrupt' mode.
-         * Unlike disabling the processor clock via the PMC (above)
-         *  this allows the processor to be woken via JTAG.
+         * Post-RM9200 processors need this in conjunction with the above
+         * to save power when idle.
          */
         cpu_do_idle();
 #endif