From: Oliver Neukum oneukum@suse.com
commit b55d996f057bf2e7ba9422a80b5e17e99860cb0b upstream.
Mutexes shall be initialized before they are used.
Fixes: 12e510dbc57b2 ("Input: usbtouchscreen - fix deadlock in autosuspend") Reported-by: syzbot+199ea16c7f26418b4365@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum oneukum@suse.com Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/input/touchscreen/usbtouchscreen.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -1672,6 +1672,8 @@ static int usbtouch_probe(struct usb_int if (!usbtouch || !input_dev) goto out_free;
+ mutex_init(&usbtouch->pm_mutex); + type = &usbtouch_dev_info[id->driver_info]; usbtouch->type = type; if (!type->process_pkt)