From patchwork Thu Dec 30 10:21:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Tu X-Patchwork-Id: 529083 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8C56C433F5 for ; Thu, 30 Dec 2021 10:22:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238465AbhL3KW7 (ORCPT ); Thu, 30 Dec 2021 05:22:59 -0500 Received: from mail-sh.amlogic.com ([58.32.228.43]:36405 "EHLO mail-sh.amlogic.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234584AbhL3KW7 (ORCPT ); Thu, 30 Dec 2021 05:22:59 -0500 Received: from droid06.amlogic.com (10.18.11.248) by mail-sh.amlogic.com (10.18.11.5) with Microsoft SMTP Server id 15.1.2176.14; Thu, 30 Dec 2021 18:22:56 +0800 From: Yu Tu To: , , , CC: Greg Kroah-Hartman , Jiri Slaby , Neil Armstrong , Vyacheslav , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Yu Tu Subject: [PATCH V3 5/6] tty: serial: meson: meson_uart_shutdown omit clear AML_UART_TX_EN bit Date: Thu, 30 Dec 2021 18:21:09 +0800 Message-ID: <20211230102110.3861-6-yu.tu@amlogic.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211230102110.3861-1-yu.tu@amlogic.com> References: <20211230102110.3861-1-yu.tu@amlogic.com> MIME-Version: 1.0 X-Originating-IP: [10.18.11.248] Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org This change is an improvement. The meson_uart_shutdown function should have the opposite operation to the meson_uart_startup function, but the meson_uart_shutdown of AML_UART_TX_EN is logically missing. Signed-off-by: Yu Tu --- drivers/tty/serial/meson_uart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c index 07eb1f40aaaa..45e41f20cba3 100644 --- a/drivers/tty/serial/meson_uart.c +++ b/drivers/tty/serial/meson_uart.c @@ -140,7 +140,7 @@ static void meson_uart_shutdown(struct uart_port *port) spin_lock_irqsave(&port->lock, flags); val = readl(port->membase + AML_UART_CONTROL); - val &= ~AML_UART_RX_EN; + val &= ~(AML_UART_RX_EN | AML_UART_TX_EN); val &= ~(AML_UART_RX_INT_EN | AML_UART_TX_INT_EN); writel(val, port->membase + AML_UART_CONTROL);