From 4a4cd6b2c99e3fc9a912a83dc99c71f7658f39d0 Mon Sep 17 00:00:00 2001 From: Sherry Sun Date: Mon, 25 Jul 2022 13:01:15 +0800 Subject: [PATCH] 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: ee10bc2bc733 ("serial: fsl_lpuart: handle break and make sysrq work") Reviewed-by: Michael Walle Signed-off-by: Sherry Sun Link: https://lore.kernel.org/r/20220725050115.12396-1-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/fsl_lpuart.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index afa0f941c862f..f6c33cd228c8a 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -992,12 +992,12 @@ 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++; + sport->port.icount.frame++; } if (sr & UARTSTAT_OR) @@ -1012,12 +1012,12 @@ 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; + flg = TTY_FRAME; } if (sr & UARTSTAT_OR) -- 2.39.5