diff options
| author | Fugang Duan <fugang.duan@nxp.com> | 2019-01-28 10:27:27 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 15:45:22 +0800 |
| commit | f285ec299e8b3bf077642527efb6f17d6d1ed8e4 (patch) | |
| tree | 67108599c299ecf4102be032ee3965912766c2a3 /drivers/tty/serial/fsl_lpuart.c | |
| parent | 89d0add021de18685ce4ade70dead05fac535935 (diff) | |
tty: serial: fsl_lpuart: add magic SysRq support
Add magic SysRq key support.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Diffstat (limited to 'drivers/tty/serial/fsl_lpuart.c')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 6d3a09103820..28d4ef9805fe 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -919,7 +919,12 @@ static void lpuart32_rxint(struct lpuart_port *sport) */ sr = lpuart32_read(&sport->port, UARTSTAT); rx = lpuart32_read(&sport->port, UARTDATA); - rx &= 0x3ff; + + if ((sr & UARTSTAT_FE) && (rx & UARTDATA_FRETSC) && + !(rx & UARTDATA_MASK)) { + if (uart_handle_break(&sport->port)) + continue; + } if (uart_handle_sysrq_char(&sport->port, (unsigned char)rx)) continue; |