From: Matthew Stapleton <matthew4196@gmail.com>
Date: Mon, 30 Nov 2015 01:22:00 +0000 (+1000)
Subject: linux_get_parent_info: Check for NULL priv->sysfs_dir before strcmp
X-Git-Tag: upstream/1.0.22~153
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b14d0a49e8014c0043673160ace2910e5742a1d2;p=platform%2Fupstream%2Flibusb.git

linux_get_parent_info: Check for NULL priv->sysfs_dir before strcmp

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---

diff --git a/libusb/os/linux_usbfs.c b/libusb/os/linux_usbfs.c
index 9cbeb80..6b89ba2 100644
--- a/libusb/os/linux_usbfs.c
+++ b/libusb/os/linux_usbfs.c
@@ -1029,9 +1029,11 @@ retry:
 	usbi_mutex_lock(&ctx->usb_devs_lock);
 	list_for_each_entry(it, &ctx->usb_devs, list, struct libusb_device) {
 		struct linux_device_priv *priv = _device_priv(it);
-		if (0 == strcmp (priv->sysfs_dir, parent_sysfs_dir)) {
-			dev->parent_dev = libusb_ref_device(it);
-			break;
+		if (priv->sysfs_dir) {
+			if (0 == strcmp (priv->sysfs_dir, parent_sysfs_dir)) {
+				dev->parent_dev = libusb_ref_device(it);
+				break;
+			}
 		}
 	}
 	usbi_mutex_unlock(&ctx->usb_devs_lock);