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    Subject[PATH RESEND v2 04/10] tty: xuartps: Clear interrupt status register in shutdown
    Date
    When shutting down the UART, clear the interrupt status register.

    Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
    ---
    drivers/tty/serial/xilinx_uartps.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
    index df6778d17949..b7fc30639292 100644
    --- a/drivers/tty/serial/xilinx_uartps.c
    +++ b/drivers/tty/serial/xilinx_uartps.c
    @@ -825,6 +825,7 @@ static void cdns_uart_shutdown(struct uart_port *port)
    /* Disable interrupts */
    status = readl(port->membase + CDNS_UART_IMR_OFFSET);
    writel(status, port->membase + CDNS_UART_IDR_OFFSET);
    + writel(0xffffffff, port->membase + CDNS_UART_ISR_OFFSET);

    /* Disable the TX and RX */
    writel(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS,
    --
    2.6.3.3.g9bb996a


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