linux-kernel - [PATCH 6/7] serial: uartps: Fix the ignore

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Date:   Fri, 29 Apr 2022 13:44:21 +0530
From:   Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
To:     <linux-serial@...r.kernel.org>
CC:     <michal.simek@...inx.com>, <jirislaby@...nel.org>,
        <gregkh@...uxfoundation.org>, <git@...inx.com>,
        <linux-kernel@...r.kernel.org>,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: [PATCH 6/7] serial: uartps: Fix the ignore_status

Currently the ignore_status is not considered in the isr.
Also the ignore_status is not updated in the set_termios.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
---
 drivers/tty/serial/xilinx_uartps.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 289d70914956..81ba69c57716 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -375,6 +375,8 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id)
 		isrstatus &= ~CDNS_UART_IXR_TXEMPTY;
 	}
 
+	isrstatus &= port->read_status_mask;
+	isrstatus &= ~port->ignore_status_mask;
 	/*
 	 * Skip RX processing if RX is disabled as RXEMPTY will never be set
 	 * as read bytes will not be removed from the FIFO.
@@ -1583,6 +1585,8 @@ static int cdns_uart_probe(struct platform_device *pdev)
 	port->dev = &pdev->dev;
 	port->uartclk = clk_get_rate(cdns_uart_data->uartclk);
 	port->private_data = cdns_uart_data;
+	port->read_status_mask = CDNS_UART_IXR_TXEMPTY | CDNS_UART_IXR_RXTRIG |
+			CDNS_UART_IXR_OVERRUN | CDNS_UART_IXR_TOUT;
 	cdns_uart_data->port = port;
 	platform_set_drvdata(pdev, port);
 
-- 
2.25.1