ARM: OMAP2+: wakeupgen: Add comment for unhandled FROZEN transitions

FROZEN hotplug notifiers are not handled and do not have to be. Insert
a comment to remember that the lack of the FROZEN transitions is no
accident.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
index f397bd6bd6e30149c525e270853701a916500e96..f436ccb6137b812d7752a6d375bfc14055ace144 100644 (file)
--- a/arch/arm/mach-omap2/omap-wakeupgen.c
+++ b/arch/arm/mach-omap2/omap-wakeupgen.c
@@ -320,6 +320,11 @@ static int irq_cpu_hotplug_notify(struct notifier_block *self,
 {
        unsigned int cpu = (unsigned int)hcpu;
 
+       /*
+        * Corresponding FROZEN transitions do not have to be handled,
+        * they are handled by at a higher level
+        * (drivers/cpuidle/coupled.c).
+        */
        switch (action) {
        case CPU_ONLINE:
                wakeupgen_irqmask_all(cpu, 0);