tty: serial: imx: disable DCD and RI interrupts

If the UART is in DTE mode, the signals DCD and RI are inputs. In
this case, the control bits in UCR3_DCD and UCR3_RI control the
interrupt of those two inputs. The two bits are 1 on reset, hence
leading to an interrupt if one of those signal changes... However,
as of now the interrupt handler does not handle these interrupts,
leading to a interrupt strom.

Solve the issue by explicitly disabling the two interrupts during
initialization.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
(cherry picked from commit 2d027fec8264daa4cda1bcc81cabb91bd97cde0b)
(cherry picked from commit 0d85191ac6663ea3e2ff84d96f20c62144549f27)

0 files changed, 0 insertions, 0 deletions