From 7c0306ca6f3dae4014d6619eaea4e006070af325 Mon Sep 17 00:00:00 2001
From: Michel Machado <michel@digirati.com.br>
Date: Wed, 24 Dec 2014 12:10:47 -0300
Subject: [PATCH] f3probe: avoid hanging before the second reset

f3probe was writing too many blocks between
the first and the second reset due to
a poor estimate of the writing and reseting times.
---
 libprobe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libprobe.c b/libprobe.c
index f79d6a2..7e69c61 100644
--- a/libprobe.c
+++ b/libprobe.c
@@ -122,7 +122,7 @@ static uint64_t estimate_best_n_block(struct device *dev)
 
 	perf_device_sample(dev, NULL, NULL, &write_count, &write_time_us,
 		&reset_count, &reset_time_us);
-	if (!write_count || !reset_count) {
+	if (write_count < 3 || reset_count < 2) {
 		/* There is not enough measurements. */
 		return (1 << 2) - 1;
 	}