From mboxrd@z Thu Jan 1 00:00:00 1970 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 4B565C4321E for ; Sat, 19 Nov 2022 02:23:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235630AbiKSCXJ (ORCPT ); Fri, 18 Nov 2022 21:23:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235906AbiKSCWY (ORCPT ); Fri, 18 Nov 2022 21:22:24 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F00D6C6D17; Fri, 18 Nov 2022 18:15:09 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2D43B62832; Sat, 19 Nov 2022 02:14:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9E554C433D7; Sat, 19 Nov 2022 02:14:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1668824098; bh=akzyXA6taxIIlj4f4t66EKRkG+JncKRTxevLEUPUAs0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nKXhTwgy60LnPekilNJqXmwj8fqnC52jK/2yfSZ8ywX8Zeg/t1qDO+dlSykpjNiX2 cSzXLwym68ItTzymrK2aIMTap8VGdDZz+zIPXdSFXXsbxMzrRV8cnlVlu9qr7AhtxQ IKw3wzHV8O3aP5PbIfDoQMfBSl8PD+LYxN9GKchKpxlkdzukTy7lxGu6XNAS2Y/DWa PIQo7ngnrABMuBSHI8cC9f5cQRZGjbNa4+sgbYXNzzQCo8wtDZRxDKeOhb+20iXs57 bzcQdiMiBSq696gRqM/CychkyMBBIvNOzGaJEqI2AbWCu9MFMdGKZPOKJeAnQ3JOiV ErDJG9IvvgOYg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: "Jason A. Donenfeld" , Thomas Bogendoerfer , Sasha Levin , yangtiezhu@loongson.cn, wsa+renesas@sang-engineering.com, windhl@126.com, linux-mips@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 27/27] MIPS: pic32: treat port as signed integer Date: Fri, 18 Nov 2022 21:13:52 -0500 Message-Id: <20221119021352.1774592-27-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221119021352.1774592-1-sashal@kernel.org> References: <20221119021352.1774592-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: "Jason A. Donenfeld" [ Upstream commit 648060902aa302331b5d6e4f26d8ee0761d239ab ] get_port_from_cmdline() returns an int, yet is assigned to a char, which is wrong in its own right, but also, with char becoming unsigned, this poses problems, because -1 is used as an error value. Further complicating things, fw_init_early_console() is only ever called with a -1 argument. Fix this up by removing the unused argument from fw_init_early_console() and treating port as a proper signed integer. Cc: Thomas Bogendoerfer Signed-off-by: Jason A. Donenfeld Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/include/asm/fw/fw.h | 2 +- arch/mips/pic32/pic32mzda/early_console.c | 13 ++++++------- arch/mips/pic32/pic32mzda/init.c | 2 +- 3 files changed, 8 insertions(+), 9 deletions(-) diff --git a/arch/mips/include/asm/fw/fw.h b/arch/mips/include/asm/fw/fw.h index d0ef8b4892bb..d0494ce4b337 100644 --- a/arch/mips/include/asm/fw/fw.h +++ b/arch/mips/include/asm/fw/fw.h @@ -26,6 +26,6 @@ extern char *fw_getcmdline(void); extern void fw_meminit(void); extern char *fw_getenv(char *name); extern unsigned long fw_getenvl(char *name); -extern void fw_init_early_console(char port); +extern void fw_init_early_console(void); #endif /* __ASM_FW_H_ */ diff --git a/arch/mips/pic32/pic32mzda/early_console.c b/arch/mips/pic32/pic32mzda/early_console.c index 25372e62783b..3cd1b408fa1c 100644 --- a/arch/mips/pic32/pic32mzda/early_console.c +++ b/arch/mips/pic32/pic32mzda/early_console.c @@ -27,7 +27,7 @@ #define U_BRG(x) (UART_BASE(x) + 0x40) static void __iomem *uart_base; -static char console_port = -1; +static int console_port = -1; static int __init configure_uart_pins(int port) { @@ -47,7 +47,7 @@ static int __init configure_uart_pins(int port) return 0; } -static void __init configure_uart(char port, int baud) +static void __init configure_uart(int port, int baud) { u32 pbclk; @@ -60,7 +60,7 @@ static void __init configure_uart(char port, int baud) uart_base + PIC32_SET(U_STA(port))); } -static void __init setup_early_console(char port, int baud) +static void __init setup_early_console(int port, int baud) { if (configure_uart_pins(port)) return; @@ -130,16 +130,15 @@ static int __init get_baud_from_cmdline(char *arch_cmdline) return baud; } -void __init fw_init_early_console(char port) +void __init fw_init_early_console(void) { char *arch_cmdline = pic32_getcmdline(); - int baud = -1; + int baud, port; uart_base = ioremap(PIC32_BASE_UART, 0xc00); baud = get_baud_from_cmdline(arch_cmdline); - if (port == -1) - port = get_port_from_cmdline(arch_cmdline); + port = get_port_from_cmdline(arch_cmdline); if (port == -1) port = EARLY_CONSOLE_PORT; diff --git a/arch/mips/pic32/pic32mzda/init.c b/arch/mips/pic32/pic32mzda/init.c index 764f2d022fae..429830afff54 100644 --- a/arch/mips/pic32/pic32mzda/init.c +++ b/arch/mips/pic32/pic32mzda/init.c @@ -47,7 +47,7 @@ void __init plat_mem_setup(void) strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE); #ifdef CONFIG_EARLY_PRINTK - fw_init_early_console(-1); + fw_init_early_console(); #endif pic32_config_init(); } -- 2.35.1