From patchwork Wed Oct 18 10:54:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Andr=C3=A9_Draszik?= X-Patchwork-Id: 735403 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 90EF4CDB483 for ; Wed, 18 Oct 2023 10:55:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230057AbjJRKz0 (ORCPT ); Wed, 18 Oct 2023 06:55:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229482AbjJRKzZ (ORCPT ); Wed, 18 Oct 2023 06:55:25 -0400 Received: from mail-wm1-f46.google.com (mail-wm1-f46.google.com [209.85.128.46]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA83AEA; Wed, 18 Oct 2023 03:55:21 -0700 (PDT) Received: by mail-wm1-f46.google.com with SMTP id 5b1f17b1804b1-407da05f05aso12426155e9.3; Wed, 18 Oct 2023 03:55:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697626520; x=1698231320; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=rs9LevmP9tka/XKvdemB1cXwK7JUBe4mAxtgJ4jhXQs=; b=SSJGC80ny3PUUBbQCGC1pQFZm07ohO8UkWIJwuTzdDxKJgp5k1PioSEsjjI9ulmcLa 9iIlMiez7sgTcbHmXRJzlOL0DUGph0t0Pliqp43n+98XCwsRV/aSAtznaEz8fwpUWQY1 eQnlG/tpMeax6jj6J38WibXNDP9YjOf6jAHKTkqySGZEJQErsjp5+rvfIFqDySRIQBFP nVP0q9UmePMyEl7h7hRoa7334dNTeQW+yD4qekEALj3gB+R+/6em5zEmAXK2GtFzpYSr Ng+Ibn4foq7r6WsupyRA5kcab9/KuZOD+ilcy8k0o9QzQd6NIXAK3irAyu7O989T/+OU wy7Q== X-Gm-Message-State: AOJu0YwdwgS+yjkMS+BFWxg1V9e9M/FbZqeAwspJb9opixsc7fwq87g1 zDgaaJoVE4fWvIHw9XJQ6g9nYAXTXwV5fUrM X-Google-Smtp-Source: AGHT+IEDc0yLySq1GGICz5oXgWSJXPi85MBgBwuCoh4eNVzLkUZNzn+GehG6KoZtTKGkg+SUolDtnA== X-Received: by 2002:a05:600c:4fd2:b0:407:3b6d:b561 with SMTP id o18-20020a05600c4fd200b004073b6db561mr3649087wmq.9.1697626519887; Wed, 18 Oct 2023 03:55:19 -0700 (PDT) Received: from salami.lan ([80.111.64.44]) by smtp.gmail.com with ESMTPSA id o36-20020a05600c512400b00405959469afsm1374498wms.3.2023.10.18.03.55.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 03:55:19 -0700 (PDT) From: =?utf-8?q?Andr=C3=A9_Draszik?= To: linux-kernel@vger.kernel.org Cc: krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Draszik?= Subject: [PATCH] tty: serial: samsung_tty: remove dead code Date: Wed, 18 Oct 2023 11:54:54 +0100 Message-Id: <20231018105454.3911161-1-git@andred.net> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: André Draszik When support for various old platforms was removed in commit 1ea35b355722, s3c24xx_serial_ops also became unused here because nothing sets port type TYPE_S3C24XX anymore. Remove s3c24xx_serial_ops and all the code that's unreachable now. Fixes: 1ea35b355722 ("ARM: s3c: remove s3c24xx specific hacks") Signed-off-by: André Draszik Reviewed-by: Krzysztof Kozlowski --- drivers/tty/serial/samsung_tty.c | 105 ------------------------------- 1 file changed, 105 deletions(-) diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index 07fb8a9dac63..6b8d4b4402e9 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -64,7 +64,6 @@ #define RXSTAT_DUMMY_READ (0x10000000) enum s3c24xx_port_type { - TYPE_S3C24XX, TYPE_S3C6400, TYPE_APPLE_S5L, }; @@ -128,8 +127,6 @@ struct s3c24xx_uart_dma { }; struct s3c24xx_uart_port { - unsigned char rx_claimed; - unsigned char tx_claimed; unsigned char rx_enabled; unsigned char tx_enabled; unsigned int pm_level; @@ -1166,29 +1163,6 @@ static void s3c24xx_serial_release_dma(struct s3c24xx_uart_port *p) } } -static void s3c24xx_serial_shutdown(struct uart_port *port) -{ - struct s3c24xx_uart_port *ourport = to_ourport(port); - - if (ourport->tx_claimed) { - free_irq(ourport->tx_irq, ourport); - ourport->tx_enabled = 0; - ourport->tx_claimed = 0; - ourport->tx_mode = 0; - } - - if (ourport->rx_claimed) { - free_irq(ourport->rx_irq, ourport); - ourport->rx_claimed = 0; - ourport->rx_enabled = 0; - } - - if (ourport->dma) - s3c24xx_serial_release_dma(ourport); - - ourport->tx_in_progress = 0; -} - static void s3c64xx_serial_shutdown(struct uart_port *port) { struct s3c24xx_uart_port *ourport = to_ourport(port); @@ -1234,48 +1208,6 @@ static void apple_s5l_serial_shutdown(struct uart_port *port) ourport->tx_in_progress = 0; } -static int s3c24xx_serial_startup(struct uart_port *port) -{ - struct s3c24xx_uart_port *ourport = to_ourport(port); - int ret; - - ourport->rx_enabled = 1; - - ret = request_irq(ourport->rx_irq, s3c24xx_serial_rx_irq, 0, - s3c24xx_serial_portname(port), ourport); - - if (ret != 0) { - dev_err(port->dev, "cannot get irq %d\n", ourport->rx_irq); - return ret; - } - - ourport->rx_claimed = 1; - - dev_dbg(port->dev, "requesting tx irq...\n"); - - ourport->tx_enabled = 1; - - ret = request_irq(ourport->tx_irq, s3c24xx_serial_tx_irq, 0, - s3c24xx_serial_portname(port), ourport); - - if (ret) { - dev_err(port->dev, "cannot get irq %d\n", ourport->tx_irq); - goto err; - } - - ourport->tx_claimed = 1; - - /* the port reset code should have done the correct - * register setup for the port controls - */ - - return ret; - -err: - s3c24xx_serial_shutdown(port); - return ret; -} - static int s3c64xx_serial_startup(struct uart_port *port) { struct s3c24xx_uart_port *ourport = to_ourport(port); @@ -1692,8 +1624,6 @@ static const char *s3c24xx_serial_type(struct uart_port *port) const struct s3c24xx_uart_port *ourport = to_ourport(port); switch (ourport->info->type) { - case TYPE_S3C24XX: - return "S3C24XX"; case TYPE_S3C6400: return "S3C6400/10"; case TYPE_APPLE_S5L: @@ -1753,27 +1683,6 @@ static void s3c24xx_serial_put_poll_char(struct uart_port *port, unsigned char c); #endif -static const struct uart_ops s3c24xx_serial_ops = { - .pm = s3c24xx_serial_pm, - .tx_empty = s3c24xx_serial_tx_empty, - .get_mctrl = s3c24xx_serial_get_mctrl, - .set_mctrl = s3c24xx_serial_set_mctrl, - .stop_tx = s3c24xx_serial_stop_tx, - .start_tx = s3c24xx_serial_start_tx, - .stop_rx = s3c24xx_serial_stop_rx, - .break_ctl = s3c24xx_serial_break_ctl, - .startup = s3c24xx_serial_startup, - .shutdown = s3c24xx_serial_shutdown, - .set_termios = s3c24xx_serial_set_termios, - .type = s3c24xx_serial_type, - .config_port = s3c24xx_serial_config_port, - .verify_port = s3c24xx_serial_verify_port, -#if defined(CONFIG_SERIAL_SAMSUNG_CONSOLE) && defined(CONFIG_CONSOLE_POLL) - .poll_get_char = s3c24xx_serial_get_poll_char, - .poll_put_char = s3c24xx_serial_put_poll_char, -#endif -}; - static const struct uart_ops s3c64xx_serial_ops = { .pm = s3c24xx_serial_pm, .tx_empty = s3c24xx_serial_tx_empty, @@ -1836,7 +1745,6 @@ static void s3c24xx_serial_init_port_default(int index) { port->iotype = UPIO_MEM; port->uartclk = 0; port->fifosize = 16; - port->ops = &s3c24xx_serial_ops; port->flags = UPF_BOOT_AUTOCONF; port->line = index; } @@ -1954,16 +1862,6 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport, ourport->tx_irq = ret + 1; } - switch (ourport->info->type) { - case TYPE_S3C24XX: - ret = platform_get_irq(platdev, 1); - if (ret > 0) - ourport->tx_irq = ret; - break; - default: - break; - } - /* * DMA is currently supported only on DT platforms, if DMA properties * are specified. @@ -2083,9 +1981,6 @@ static int s3c24xx_serial_probe(struct platform_device *pdev) &ourport->drv_data->def_cfg; switch (ourport->info->type) { - case TYPE_S3C24XX: - ourport->port.ops = &s3c24xx_serial_ops; - break; case TYPE_S3C6400: ourport->port.ops = &s3c64xx_serial_ops; break;