Re: [PATCH V1] serial: imx: revert setup DCEDTE early and ensure DCD and RI irqs to be off

Hi Steve,

On Tue, May 23, 2017 at 9:17 AM, Steve Twiss
[off-list ref] wrote:

From: Steve Twiss <redacted>

Revert the commit e61c38d85b7392e ("serial: imx: setup DCEDTE early and
ensure DCD and RI irqs to be off")

The patch submitted to setup DCEDTE early and ensure DCD and RI irqs to
be off, causes a serial console display problem the i.MX6Q SABRESD board.
The console becomes unreadable and unwritable.

Tested-by: Steve Twiss <redacted>
Signed-off-by: Steve Twiss <redacted>

---
This patch applies against linux-next and v4.12-rc2

Hi,

I have been seeing a problem with the serial output console on the i.MX6Q
SABRESD, but not the i.MX6DL SABRESD. Everything was fine up to
linux-mainline/v4.11 but changed after linux-next/next-20170501.

Some bisection has pointed at the commit
e61c38d85b7392e033ee03bca46f1d6006156175 which, once removed from my
linux-next/v4.12-rc2 build allows the i.MX6Q board to display the console
correctly again.

This patch removes the original commit e61c38d85b7392e ("serial: imx:
setup DCEDTE early and ensure DCD and RI irqs to be off") from  linux-next
v4.12-rc2 and fixes the serial problem seen in the i.MX6Q SABRESD board.

How can the error be reproduced?

Care to share more details of the error, please?