From: Paweł Szewczyk <p.szewczyk@samsung.com>
Date: Mon, 19 Jun 2017 11:17:33 +0000 (+0200)
Subject: Fix geting configuration from unconfigured device
X-Git-Tag: submit/tizen/20170905.070056~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F86%2F135486%2F1;p=platform%2Fcore%2Fapi%2Fusb-host.git

Fix geting configuration from unconfigured device

Device in unconfigured state does not have active configuration, but it
does not neccecarily means an error.

Change-Id: I90c581aed25175ff5f76140d33610a5d4b384ff6
Signed-off-by: Paweł Szewczyk <p.szewczyk@samsung.com>
---

diff --git a/src/usb_host.c b/src/usb_host.c
index 708e0bc..0e2356b 100644
--- a/src/usb_host.c
+++ b/src/usb_host.c
@@ -835,6 +835,12 @@ int usb_host_get_active_config(usb_host_device_h dev, usb_host_config_h *config)
 		goto out; //LCOV_EXCL_LINE System Error
 	}
 
+	/* unconfigured state */
+	if (cfg_nmb == 0) {
+		config = NULL;
+		goto out;
+	}
+
 	ret = libusb_get_config_descriptor_by_value(dev->lusb_dev, cfg_nmb, &lcfg_desc);
 	if (ret < 0) {
 		ret = translate_error(ret); //LCOV_EXCL_LINE System Error