From nobody Fri Apr 3 00:30:24 2026 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 EAF0CC54EE9 for ; Tue, 20 Sep 2022 05:21:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230182AbiITFVP (ORCPT ); Tue, 20 Sep 2022 01:21:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37960 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229977AbiITFUy (ORCPT ); Tue, 20 Sep 2022 01:20:54 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96FF84F669; Mon, 19 Sep 2022 22:20:53 -0700 (PDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 4B4371F8A8; Tue, 20 Sep 2022 05:20:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1663651252; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3DR+e5tUXrU5pDouwWQoOJcV84hEa4+bOrdcoGBahis=; b=AHlZ6BHmkCZhxrHKia31hETrcgXlk+z2qr1mmJoKqGy8iCeLFN5pmRIKSo6tvoGDZ+MsxV EGPlgFVnH9amtpbWjXAvi3U72/FyvTcEtWVA1poFSDX+sxjzNKR1QrW4VyDyzNMxLUnZV9 //Lmah+LrAYoJ6uR/44KRIvELBy9zh4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1663651252; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3DR+e5tUXrU5pDouwWQoOJcV84hEa4+bOrdcoGBahis=; b=3KvSp9eNVo6hma1f/FIQVS47Gx+6sERkSqqH6QPNc8c3rEaFCIC3sAOFTTchzZYbg4zyld yOSEBD2qbOiPeoAA== Received: from localhost.localdomain (unknown [10.100.201.122]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 6DF7E2C142; Tue, 20 Sep 2022 05:20:51 +0000 (UTC) From: Jiri Slaby To: gregkh@linuxfoundation.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Jiri Slaby , Vladimir Zapolskiy , linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 05/10] tty: serial: extract tx_ready() from __serial_lpc32xx_tx() Date: Tue, 20 Sep 2022 07:20:45 +0200 Message-Id: <20220920052049.20507-6-jslaby@suse.cz> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220920052049.20507-1-jslaby@suse.cz> References: <20220920052049.20507-1-jslaby@suse.cz> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The condition in __serial_lpc32xx_tx()'s loop is barely readable. Extract it to a separate function. This will make the cleanup in the next patches easier too. Cc: Vladimir Zapolskiy Cc: Signed-off-by: Jiri Slaby Reviewed-by: Ilpo J=C3=A4rvinen --- Notes: [v4] this is new in v4 -- extracted as a separate change drivers/tty/serial/lpc32xx_hs.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_h= s.c index 0d5ef7df27d0..ed47f4768338 100644 --- a/drivers/tty/serial/lpc32xx_hs.c +++ b/drivers/tty/serial/lpc32xx_hs.c @@ -278,6 +278,13 @@ static void __serial_lpc32xx_rx(struct uart_port *port) =20 static void serial_lpc32xx_stop_tx(struct uart_port *port); =20 +static bool serial_lpc32xx_tx_ready(struct uart_port *port) +{ + u32 level =3D readl(LPC32XX_HSUART_LEVEL(port->membase)); + + return LPC32XX_HSU_TX_LEV(level) < 64; +} + static void __serial_lpc32xx_tx(struct uart_port *port) { struct circ_buf *xmit =3D &port->state->xmit; @@ -293,8 +300,7 @@ static void __serial_lpc32xx_tx(struct uart_port *port) goto exit_tx; =20 /* Transfer data */ - while (LPC32XX_HSU_TX_LEV(readl( - LPC32XX_HSUART_LEVEL(port->membase))) < 64) { + while (serial_lpc32xx_tx_ready(port)) { writel((u32) xmit->buf[xmit->tail], LPC32XX_HSUART_FIFO(port->membase)); xmit->tail =3D (xmit->tail + 1) & (UART_XMIT_SIZE - 1); --=20 2.37.3