After issuing the reset, driver is not checking the rx and tx reset
done status. So, modified driver to wait for the reset done status.

Signed-off-by: Nava kishore Manne <na...@xilinx.com>
---
Changes for v2:
                -Added New patch

 drivers/tty/serial/xilinx_uartps.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/tty/serial/xilinx_uartps.c 
b/drivers/tty/serial/xilinx_uartps.c
index 527526e..b69dea3 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -694,6 +694,10 @@ static void cdns_uart_set_termios(struct uart_port *port,
        ctrl_reg |= CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST;
        writel(ctrl_reg, port->membase + CDNS_UART_CR);
 
+       while (readl(port->membase + CDNS_UART_CR) &
+               (CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST))
+               cpu_relax();
+
        /*
         * Clear the RX disable and TX disable bits and then set the TX enable
         * bit and RX enable bit to enable the transmitter and receiver.
@@ -797,6 +801,10 @@ static int cdns_uart_startup(struct uart_port *port)
        writel(CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST,
                        port->membase + CDNS_UART_CR);
 
+       while (readl(port->membase + CDNS_UART_CR) &
+               (CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST))
+               cpu_relax();
+
        /*
         * Clear the RX disable bit and then set the RX enable bit to enable
         * the receiver.
-- 
2.1.2

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