From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Date: Fri, 29 Jul 2022 11:47:45 +0000 (+0530)
Subject: tty: xilinx_uartps: Fix the ignore_status
X-Git-Tag: Proxmox-5.15.83-1~1377
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=95a9c8b4b8777873ef13de7176bc007c106889b0;p=mirror_ubuntu-jammy-kernel.git

tty: xilinx_uartps: Fix the ignore_status

BugLink: https://bugs.launchpad.net/bugs/1996825

[ Upstream commit b8a6c3b3d4654fba19881cc77da61eac29f57cae ]

Currently the ignore_status is not considered in the isr.
Add a check to add the ignore_status.

Fixes: 61ec9016988f ("tty/serial: add support for Xilinx PS UART")
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Link: https://lore.kernel.org/r/20220729114748.18332-5-shubhrajyoti.datta@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
---

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index d5e243908d9f..815e3e26ee20 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.