Commit 707f816f authored by Sherry Sun's avatar Sherry Sun Committed by Greg Kroah-Hartman
Browse files

tty: serial: fsl_lpuart: correct the count of break characters 



The LPUART can't distinguish between a break signal and a framing error,
so need to count the break characters if there is a framing error and
received data is zero instead of the parity error.

Fixes: 5541a9ba ("serial: fsl_lpuart: handle break and make sysrq work")
Reviewed-by: default avatarMichael Walle <michael@walle.cc>
Signed-off-by: default avatarSherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20220725050115.12396-1-sherry.sun@nxp.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c7039ce9

drivers/tty/serial/fsl_lpuart.c

+6 −6
Original line number Diff line number Diff line
@@ -992,11 +992,11 @@ static void lpuart32_rxint(struct lpuart_port *sport) 


		if (sr & (UARTSTAT_PE | UARTSTAT_OR | UARTSTAT_FE)) {

			if (sr & UARTSTAT_PE) {

				sport->port.icount.parity++;

			} else if (sr & UARTSTAT_FE) {

				if (is_break)

					sport->port.icount.brk++;

				else

					sport->port.icount.parity++;

			} else if (sr & UARTSTAT_FE) {

					sport->port.icount.frame++;

			}
@@ -1012,11 +1012,11 @@ static void lpuart32_rxint(struct lpuart_port *sport) 
			sr &= sport->port.read_status_mask;



			if (sr & UARTSTAT_PE) {

				flg = TTY_PARITY;

			} else if (sr & UARTSTAT_FE) {

				if (is_break)

					flg = TTY_BREAK;

				else

					flg = TTY_PARITY;

			} else if (sr & UARTSTAT_FE) {

					flg = TTY_FRAME;

			}