From patchwork Tue Jan 17 09:03:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13104367 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EAD26C678D4 for ; Tue, 17 Jan 2023 09:07:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=uE1qA5mvBO0wgbp2Gzavhs/WWpM8bvFGYzPuJ3jLF8Y=; b=Ig8EEGYwam8YDO Yd9ifuPKpK/PQLK0XZBhCRS1lVC2S0ufxv1TjBIV/8VJY37ZyQ5GWqGcHjxj8jQCFAw+lARQWgJuZ oYD/SW+wrhEQ2tjC45Vabk19GbzxhLj6p/CB0u9LFD7OVrwWLcxeu7fNf2KfdzjTt926ETtDH0e90 pQU+9R7tYv/7SUxEeiOKEHOK5/LRqK9qheErmHFqKi7r6QjkB/tzt68mom8SeaYTSrLTTNqM76u4e bRVPv0gIORZOVs/Y+hWLpgMBawi7EHB6OLx1P8YjJQRYTkJSm5NZ7qhh1Isl059KeCxi1K6sezs6C WUY/6+xmpPe1+KrIWTPw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHhuW-00DUS7-Fk; Tue, 17 Jan 2023 09:05:40 +0000 Received: from mga14.intel.com ([192.55.52.115]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHhuH-00DUN5-Md for linux-arm-kernel@lists.infradead.org; Tue, 17 Jan 2023 09:05:27 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673946325; x=1705482325; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=H7gcjHlQ0XUrWXxfntmwgVaPZ/M9meupAYikxPatJgg=; b=AUjOsZW8lKuBQ34JnxwrNsCm0B0SIwrDoD3egluRfji0HzqnXjctryZO wX6J3DrM049oUZjWIaBYbGSjearoOL5PTPiZ3Fmo+GY2H4lePm4Pc0Tsw k7dRjx8DLHR4v+FFBriGfxZGm/tH4j6C2g6QkS+oDSYDJXg9PiS82SBh9 9b1+ziV2bBYzkIKGjHUF+tIgmYmVH/Ohi/Srpdg3JCU09vZU0cnrB9S/K GccZVMaEAE6ngFwgAy5LV5US9hTRo8+ZPvinImint+CVbFTXcdbnVGlpl H+IYV//TKfiIx8en8nKkO6ZOToyVNHVAF5ijh4BD/mluOCVixZd9Q9fC+ g==; X-IronPort-AV: E=McAfee;i="6500,9779,10592"; a="324701127" X-IronPort-AV: E=Sophos;i="5.97,222,1669104000"; d="scan'208";a="324701127" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jan 2023 01:05:25 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10592"; a="783174265" X-IronPort-AV: E=Sophos;i="5.97,222,1669104000"; d="scan'208";a="783174265" Received: from tronach-mobl1.ger.corp.intel.com (HELO ijarvine-MOBL2.ger.corp.intel.com) ([10.252.40.3]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jan 2023 01:05:19 -0800 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: linux-serial@vger.kernel.org, Greg Kroah-Hartman , Jiri Slaby , Rodolfo Giometti , Ulf Hansson , Johan Hovold , Samuel Iglesias Gonsalvez , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH v4 09/12] serial: Make uart_handle_cts_change() status param bool active Date: Tue, 17 Jan 2023 11:03:55 +0200 Message-Id: <20230117090358.4796-10-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230117090358.4796-1-ilpo.jarvinen@linux.intel.com> References: <20230117090358.4796-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230117_010525_838157_C7A90E68 X-CRM114-Status: GOOD ( 17.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Convert uart_handle_cts_change() to bool which is more appropriate than unsigned int. Rename status to active to better describe what the parameter means. While at it, make the comment about the active parameter easier to parse. Cleanup callsites from operations that are not necessary with bool. Reviewed-by: Jiri Slaby Signed-off-by: Ilpo Järvinen --- drivers/tty/serial/imx.c | 2 +- drivers/tty/serial/max3100.c | 2 +- drivers/tty/serial/max310x.c | 3 +-- drivers/tty/serial/serial_core.c | 8 ++++---- include/linux/serial_core.h | 3 +-- 5 files changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 757825edb0cd..07850a9cde61 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -771,7 +771,7 @@ static irqreturn_t __imx_uart_rtsint(int irq, void *dev_id) imx_uart_writel(sport, USR1_RTSD, USR1); usr1 = imx_uart_readl(sport, USR1) & USR1_RTSS; - uart_handle_cts_change(&sport->port, !!usr1); + uart_handle_cts_change(&sport->port, usr1); wake_up_interruptible(&sport->port.state->port.delta_msr_wait); return IRQ_HANDLED; diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c index bb74f23251fe..86dcbff8faa3 100644 --- a/drivers/tty/serial/max3100.c +++ b/drivers/tty/serial/max3100.c @@ -247,7 +247,7 @@ static int max3100_handlerx(struct max3100_port *s, u16 rx) cts = (rx & MAX3100_CTS) > 0; if (s->cts != cts) { s->cts = cts; - uart_handle_cts_change(&s->port, cts ? TIOCM_CTS : 0); + uart_handle_cts_change(&s->port, cts); } return ret; diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index 4eb24e3407f8..e9cacfe7e032 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -819,8 +819,7 @@ static irqreturn_t max310x_port_irq(struct max310x_port *s, int portno) if (ists & MAX310X_IRQ_CTS_BIT) { lsr = max310x_port_read(port, MAX310X_LSR_IRQSTS_REG); - uart_handle_cts_change(port, - !!(lsr & MAX310X_LSR_CTS_BIT)); + uart_handle_cts_change(port, lsr & MAX310X_LSR_CTS_BIT); } if (rxlen) max310x_handle_rx(port, rxlen); diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index f8a9386db482..b8fff667d4f0 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -3287,11 +3287,11 @@ EXPORT_SYMBOL_GPL(uart_handle_dcd_change); /** * uart_handle_cts_change - handle a change of clear-to-send state * @uport: uart_port structure for the open port - * @status: new clear to send status, nonzero if active + * @active: new clear-to-send status * * Caller must hold uport->lock. */ -void uart_handle_cts_change(struct uart_port *uport, unsigned int status) +void uart_handle_cts_change(struct uart_port *uport, bool active) { lockdep_assert_held_once(&uport->lock); @@ -3299,13 +3299,13 @@ void uart_handle_cts_change(struct uart_port *uport, unsigned int status) if (uart_softcts_mode(uport)) { if (uport->hw_stopped) { - if (status) { + if (active) { uport->hw_stopped = 0; uport->ops->start_tx(uport); uart_write_wakeup(uport); } } else { - if (!status) { + if (!active) { uport->hw_stopped = 1; uport->ops->stop_tx(uport); } diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 760c96ffb5bd..ddd7c9425938 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -897,8 +897,7 @@ static inline bool uart_softcts_mode(struct uart_port *uport) */ extern void uart_handle_dcd_change(struct uart_port *uport, bool active); -extern void uart_handle_cts_change(struct uart_port *uport, - unsigned int status); +extern void uart_handle_cts_change(struct uart_port *uport, bool active); extern void uart_insert_char(struct uart_port *port, unsigned int status, unsigned int overrun, unsigned int ch, unsigned int flag);