From 899b06316bda4c64c9184f8d11ce56136d6bad96 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Sun, 7 Dec 2014 15:41:51 +0100
Subject: [PATCH] lib: Add check for valid device id to hci_open_dev

---
 lib/hci.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/hci.c b/lib/hci.c
index d53455a17..392df7144 100644
--- a/lib/hci.c
+++ b/lib/hci.c
@@ -1037,6 +1037,12 @@ int hci_open_dev(int dev_id)
 	struct sockaddr_hci a;
 	int dd, err;
 
+	/* Check for valid device id */
+	if (dev_id < 0) {
+		errno = ENODEV;
+		return -1;
+	}
+
 	/* Create HCI socket */
 	dd = socket(AF_BLUETOOTH, SOCK_RAW | SOCK_CLOEXEC, BTPROTO_HCI);
 	if (dd < 0)
-- 
2.47.3