On Mon, Aug 12, 2019 at 04:58:13PM +0530, Krishna Yarlagadda wrote:

From: Ahung Cheng <redacted>

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 <redacted>
Signed-off-by: Krishna Yarlagadda <redacted>
---
 drivers/tty/serial/serial-tegra.c | 3 +++
 1 file changed, 3 insertions(+)

Acked-by: Thierry Reding <redacted>