From 6a44886899ef8cc396e230e492e6a56a883889f3 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Bj=C3=B8rn=20Mork?= Date: Mon, 10 Sep 2012 22:17:34 +0200 Subject: [PATCH] USB: cdc-wdm: fix wdm_find_device* return value MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit A logic error made the wdm_find_device* functions return a bogus pointer into static data instead of the intended NULL no matching device was found. Cc: stable # v3.4+ Cc: Oliver Neukum Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-wdm.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 65a55abb791f..5f0cb417b736 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -109,12 +109,14 @@ static struct usb_driver wdm_driver; /* return intfdata if we own the interface, else look up intf in the list */ static struct wdm_device *wdm_find_device(struct usb_interface *intf) { - struct wdm_device *desc = NULL; + struct wdm_device *desc; spin_lock(&wdm_device_list_lock); list_for_each_entry(desc, &wdm_device_list, device_list) if (desc->intf == intf) - break; + goto found; + desc = NULL; +found: spin_unlock(&wdm_device_list_lock); return desc; @@ -122,12 +124,14 @@ static struct wdm_device *wdm_find_device(struct usb_interface *intf) static struct wdm_device *wdm_find_device_by_minor(int minor) { - struct wdm_device *desc = NULL; + struct wdm_device *desc; spin_lock(&wdm_device_list_lock); list_for_each_entry(desc, &wdm_device_list, device_list) if (desc->intf->minor == minor) - break; + goto found; + desc = NULL; +found: spin_unlock(&wdm_device_list_lock); return desc; -- 2.30.2