[PATCH v3] tty: serial: samsung_tty: loopback mode support

[Chanho Park]

> Right. The problem is elsewhere. You used rd_reg(port, S3C2410_UCON)
> instead of rd_regl(port, S3C2410_UCON) what always zeroed upper bits. I
> will send a fix in a few minutes.

Oops. You're right. Thanks for pointing it out and send the fix.

Best Regards,
Chanho Park