Commits
Ahung Cheng committed 18a4c404d2b
serial: tegra: protect IER against LCR.DLAB The IER and DLH registers occupy the same address space, selected by the LCR.DLAB bit. Hence, add port lock to protect IER when LCR.DLAB bit is set. Signed-off-by: Ahung Cheng <ahcheng@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/1565609303-27000-5-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>