How to resolve communication issues affecting Sealevel’s XR17V35X based serial devices (7xxxec serial cards, 7106e, Relio R1)?

…30d17f9 to 8250_exar.c. The diff is shown below for convenience.— linux/drivers/tty/serial/8250/8250_exar.c.orig 2020-07-09 11:05:03.920060577 -0400 +++ linux/drivers/tty/serial/8250/8250_exar.c 2020-07-22 14:08:27.494512202 -0400 @@ -326,7 +326,17 @@ static void setup_gpio(struct pci_dev *p * devices…