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commit7ebb605d22upstream. If kstrtou8() fails, the mutex_unlock() is missed, move kstrtou8() before mutex_lock() to fix it up. Fixes:0525210c98("usb: gadget: uvc: Allow definition of XUs in configfs") Fixes:b3c839bd8a("usb: gadget: uvc: Make bSourceID read/write") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20230213070926.776447-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>