X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=kernel%2Firq%2Ftimings.c;h=1f981162648a3d5c4e5e0ab735127b1376d743b5;hb=refs%2Fheads%2Faccepted%2Ftizen_7.0_unified;hp=773b6105c4aea2843afb3f49313e4dff768af1c0;hpb=0613ed91901b5f87afcd28b4560fb0aa37a0db13;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/kernel/irq/timings.c b/kernel/irq/timings.c
index 773b610..1f98116 100644
--- a/kernel/irq/timings.c
+++ b/kernel/irq/timings.c
@@ -453,6 +453,11 @@ static __always_inline void __irq_timings_store(int irq, struct irqt_stat *irqs,
 	 */
 	index = irq_timings_interval_index(interval);
 
+	if (index > PREDICTION_BUFFER_SIZE - 1) {
+		irqs->count = 0;
+		return;
+	}
+
 	/*
 	 * Store the index as an element of the pattern in another
 	 * circular array.
@@ -794,12 +799,14 @@ static int __init irq_timings_test_irqs(struct timings_intervals *ti)
 
 		__irq_timings_store(irq, irqs, ti->intervals[i]);
 		if (irqs->circ_timings[i & IRQ_TIMINGS_MASK] != index) {
+			ret = -EBADSLT;
 			pr_err("Failed to store in the circular buffer\n");
 			goto out;
 		}
 	}
 
 	if (irqs->count != ti->count) {
+		ret = -ERANGE;
 		pr_err("Count differs\n");
 		goto out;
 	}