From: Raviteja Narayanam <raviteja.narayanam@xxxxxxxxxx> Make sure that all bytes are transmitted out of Uart by monitoring CDNS_UART_SR_TACTIVE bit as well. Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xxxxxxxxxx> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx> --- drivers/tty/serial/xilinx_uartps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 662b8ab..38cb76a9 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -663,8 +663,8 @@ static unsigned int cdns_uart_tx_empty(struct uart_port *port) unsigned int status; status = readl(port->membase + CDNS_UART_SR) & - CDNS_UART_SR_TXEMPTY; - return status ? TIOCSER_TEMT : 0; + (CDNS_UART_SR_TXEMPTY | CDNS_UART_SR_TACTIVE); + return (status == CDNS_UART_SR_TXEMPTY) ? TIOCSER_TEMT : 0; } /** -- 2.1.1
