On 2023-06-02, Chen-Yu Tsai <wenst@xxxxxxxxxxxx> wrote: > This patch, in linux-next since 20230601, unfortunately breaks > MediaTek based Chromebooks. The kernel hangs during the probe of the > serial ports, which use the 8250_mtk driver. Are you sure it is this patch? Have you bisected it? Unfortunately next-20230601 also brought in a series that added spinlocking to the 8250 driver. That may be the issue here instead. For 8250 bug reports we really need to bisection. John Ogness