From 9f7cb6aa2d01c3db2e4ef58f296adb522929e3a9 Mon Sep 17 00:00:00 2001
From: Changpeng Liu <changpeng.liu@intel.com>
Date: Wed, 20 Oct 2021 17:14:28 +0800
Subject: [PATCH] examples/nvme/cmb_copy: exit the test tool if no controller
 found

fix issue #2200.

Change-Id: I9d0374e56f199d562c48581ec6630547175d8627
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9927
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
---
 examples/nvme/cmb_copy/cmb_copy.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/examples/nvme/cmb_copy/cmb_copy.c b/examples/nvme/cmb_copy/cmb_copy.c
index 50eedcbba..03f147eef 100644
--- a/examples/nvme/cmb_copy/cmb_copy.c
+++ b/examples/nvme/cmb_copy/cmb_copy.c
@@ -397,6 +397,11 @@ int main(int argc, char **argv)
 		g_config.cmb.ctrlr = g_config.write.ctrlr;
 	}
 
+	if (!g_config.read.ctrlr || !g_config.write.ctrlr) {
+		fprintf(stderr, "No NVMe controller that support CMB was found!\n");
+		return -1;
+	}
+
 	/*
 	 * Call the cmb_copy() function which performs the CMB
 	 * based copy or returns an error code if it fails.