From patchwork Wed Dec 29 13:53:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Tu X-Patchwork-Id: 529468 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 BCDA5C433EF for ; Wed, 29 Dec 2021 13:55:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237165AbhL2Nze (ORCPT ); Wed, 29 Dec 2021 08:55:34 -0500 Received: from mail-sh.amlogic.com ([58.32.228.43]:39396 "EHLO mail-sh.amlogic.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237218AbhL2Nzd (ORCPT ); Wed, 29 Dec 2021 08:55:33 -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; Wed, 29 Dec 2021 21:55:30 +0800 From: Yu Tu To: , , , CC: Greg Kroah-Hartman , Jiri Slaby , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Yu Tu Subject: [PATCH V2 5/6] tty: serial: meson: meson_uart_shutdown omit clear AML_UART_TX_EN bit Date: Wed, 29 Dec 2021 21:53:49 +0800 Message-ID: <20211229135350.9659-6-yu.tu@amlogic.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211229135350.9659-1-yu.tu@amlogic.com> References: <20211229135350.9659-1-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 9b07e3534969..c17109d6d441 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);