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commite7cd4b811cupstream. The detach_port() doesn't return error when detach is attempted on an invalid port. Fixes:40ecdeb1a1("usbip: usbip_detach: fix to check for invalid ports") Cc: stable@vger.kernel.org Reviewed-by: Hongren Zheng <i@zenithal.me> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Zongmin Zhou <zhouzongmin@kylinos.cn> Link: https://lore.kernel.org/r/20241024022700.1236660-1-min_halo@163.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>