From 236ecca7dad4b630c048214a98a16613c530a119 Mon Sep 17 00:00:00 2001
From: Michael Lotz <mmlr@mlotz.ch>
Date: Mon, 19 Jan 2009 17:35:56 +0000
Subject: [PATCH] Fix missing mutex_unlock() in case of opening an already
 removed device. Spotted by Mika Lindqvist, thanks!

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28957 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/add-ons/kernel/drivers/disk/usb/usb_disk/usb_disk.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/add-ons/kernel/drivers/disk/usb/usb_disk/usb_disk.cpp b/src/add-ons/kernel/drivers/disk/usb/usb_disk/usb_disk.cpp
index 75f6ce7160..8a56fb3e32 100644
--- a/src/add-ons/kernel/drivers/disk/usb/usb_disk/usb_disk.cpp
+++ b/src/add-ons/kernel/drivers/disk/usb/usb_disk/usb_disk.cpp
@@ -867,8 +867,10 @@ usb_disk_open(const char *name, uint32 flags, void **cookie)
 			device_lun *lun = device->luns[i];
 			if (strncmp(rawName, lun->name, 32) == 0) {
 				// found the matching device/lun
-				if (device->removed)
+				if (device->removed) {
+					mutex_unlock(&gDeviceListLock);
 					return B_ERROR;
+				}
 
 				device->open_count++;
 				*cookie = lun;