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Groups > linux.kernel > #1274787
| From | Soren Brinkmann <soren.brinkmann@xilinx.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH LINUX v3 04/10] tty: xuartps: Clear interrupt status register in shutdown |
| Date | 2015-11-22 04:10 +0100 |
| Message-ID | <qxtcm-6aY-11@gated-at.bofh.it> (permalink) |
| References | <qxt2F-5Ri-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH LINUX v3 00/10] tty: xuartps: Fix lock ups Soren Brinkmann <soren.brinkmann@xilinx.com> - 2015-11-22 04:00 +0100 [PATCH LINUX v3 07/10] tty: xuartps: Acquire port lock for shutdown Soren Brinkmann <soren.brinkmann@xilinx.com> - 2015-11-22 04:00 +0100 [PATCH LINUX v3 01/10] tty: xuartps: Beautify read-modify writes Soren Brinkmann <soren.brinkmann@xilinx.com> - 2015-11-22 04:10 +0100 [PATCH LINUX v3 09/10] tty: xuartps: Only handle RX IRQs when RX is enabled Soren Brinkmann <soren.brinkmann@xilinx.com> - 2015-11-22 04:10 +0100 [PATCH LINUX v3 03/10] tty: xuartps: Don't consider circular buffer when enabling transmitter Soren Brinkmann <soren.brinkmann@xilinx.com> - 2015-11-22 04:10 +0100 [PATCH LINUX v3 04/10] tty: xuartps: Clear interrupt status register in shutdown Soren Brinkmann <soren.brinkmann@xilinx.com> - 2015-11-22 04:10 +0100 [PATCH LINUX v3 05/10] tty: xuartps: Improve startup function Soren Brinkmann <soren.brinkmann@xilinx.com> - 2015-11-22 04:10 +0100
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