Power: Add guard condition for maximum wakeup reasons
Ensure the array for the wakeup reason IRQs does not overflow.
Change-Id: Iddc57a3aeb1888f39d4e7b004164611803a4d37c
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
(cherry picked from commit b5ea40cdfcf38296535f931a7e5e7bf47b6fad7f)
diff --git a/kernel/power/wakeup_reason.c b/kernel/power/wakeup_reason.c
index 82e69fe..caf4421 100644
--- a/kernel/power/wakeup_reason.c
+++ b/kernel/power/wakeup_reason.c
@@ -79,6 +79,13 @@
printk(KERN_INFO "Resume caused by IRQ %d\n", irq);
spin_lock(&resume_reason_lock);
+ if (irq_count == MAX_WAKEUP_REASON_IRQS) {
+ spin_unlock(&resume_reason_lock);
+ printk(KERN_WARNING "Resume caused by more than %d IRQs\n",
+ MAX_WAKEUP_REASON_IRQS);
+ return;
+ }
+
irq_list[irq_count++] = irq;
spin_unlock(&resume_reason_lock);
}