From: Soren Brinkmann <soren.brinkmann@xilinx.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>
Cc: Peter Hurley <peter@hurleysoftware.com>,
Michal Simek <michal.simek@xilinx.com>,
linux-kernel@vger.kernel.org,
Soren Brinkmann <soren.brinkmann@xilinx.com>,
linux-serial@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH LINUX v3 04/10] tty: xuartps: Clear interrupt status register in shutdown
Date: Sat, 21 Nov 2015 18:59:26 -0800 [thread overview]
Message-ID: <1448161172-19717-5-git-send-email-soren.brinkmann@xilinx.com> (raw)
In-Reply-To: <1448161172-19717-1-git-send-email-soren.brinkmann@xilinx.com>
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 6a7cd4e057ae..ef114d7a0623 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -828,6 +828,7 @@ 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
next prev parent reply other threads:[~2015-11-22 2:59 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-22 2:59 [PATCH LINUX v3 00/10] tty: xuartps: Fix lock ups Soren Brinkmann
2015-11-22 2:59 ` [PATCH LINUX v3 01/10] tty: xuartps: Beautify read-modify writes Soren Brinkmann
2015-12-05 17:04 ` Peter Hurley
2015-12-05 17:23 ` Moritz Fischer
2015-11-22 2:59 ` [PATCH LINUX v3 02/10] tty: xuartps: Use spinlock to serialize HW access Soren Brinkmann
2015-12-05 17:05 ` Peter Hurley
2015-11-22 2:59 ` [PATCH LINUX v3 03/10] tty: xuartps: Don't consider circular buffer when enabling transmitter Soren Brinkmann
2015-12-05 17:17 ` Peter Hurley
2015-11-22 2:59 ` Soren Brinkmann [this message]
2015-12-05 17:19 ` [PATCH LINUX v3 04/10] tty: xuartps: Clear interrupt status register in shutdown Peter Hurley
2015-12-05 17:25 ` Moritz Fischer
2015-11-22 2:59 ` [PATCH LINUX v3 05/10] tty: xuartps: Improve startup function Soren Brinkmann
2015-12-05 17:21 ` Peter Hurley
2015-12-05 21:47 ` Sören Brinkmann
2015-11-22 2:59 ` [PATCH LINUX v3 06/10] tty: xuartps: Keep lock for whole ISR Soren Brinkmann
2015-12-05 17:23 ` Peter Hurley
2015-11-22 2:59 ` [PATCH LINUX v3 07/10] tty: xuartps: Acquire port lock for shutdown Soren Brinkmann
2015-12-05 17:23 ` Peter Hurley
2015-11-22 2:59 ` [PATCH LINUX v3 08/10] tty: xuartps: Move RX path into helper function Soren Brinkmann
2015-12-05 17:40 ` Peter Hurley
2015-12-05 21:49 ` Sören Brinkmann
2015-11-22 2:59 ` [PATCH LINUX v3 09/10] tty: xuartps: Only handle RX IRQs when RX is enabled Soren Brinkmann
2015-12-05 17:43 ` Peter Hurley
2015-12-05 22:19 ` Sören Brinkmann
2015-11-22 2:59 ` [PATCH LINUX v3 10/10] tty: xuartps: Cleanup: Reformat if-else Soren Brinkmann
2015-12-05 17:49 ` [PATCH LINUX v3 00/10] tty: xuartps: Fix lock ups Peter Hurley
2015-12-05 22:02 ` Sören Brinkmann
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