From patchwork Wed Feb 21 18:31:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13566111 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 0063BC48BEB for ; Wed, 21 Feb 2024 18:37:26 +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=6RmrnexcLlbqX7dmoIcQDSfiBOib92C8BEpsnzKdshQ=; b=cXyKLyWExEZqHP EsOJ4VDD9ekdLe4smLAy5Nzmceke4a87e4ufn6EepTlcjpbmZbjfgsLO56KCFlv6s7NjDhAkzn8zq A9m/UFFXjIM9bbs7aua7WKgJPR1hYOq3oiqlaZad3EQhPL4IEgwf+/7/BhWrYUoFf1CtZkbUyw2/Q p6zHFbVfzTZ8M3vHlivzXN5IFRWYb+ekQYcsgo80fjTU3tcWOz9HqB2Ql12Smslso5XCwGF2/quRi ABVNZlRu/C5A809cYx20sgFfcdDlXtghxvH5/nlHW1ONBC66luS9afXC8oNT8GjFvIl/9og04RIkm TtfDu/CkciMWddDr3SVQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rcrSH-000000028U1-2nbM; Wed, 21 Feb 2024 18:36:29 +0000 Received: from mgamail.intel.com ([192.198.163.7]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rcrR4-000000027xr-33lt; Wed, 21 Feb 2024 18:35:19 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1708540515; x=1740076515; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tmZdQU9N4IY5BcwLubSQEg1Rug6tt9UVDfRrfuekMhA=; b=WJFc9eIfKJoZ46H8JVmu6LKeQVxXR8IjbdG20EX3bvZNegiuO6muKc+J S1rl/0itZROa2/BNZYh9356a2yXDD+hlP/IMxcTP1w9LzYNPf+22RZ1qk IUA58/VFw0+TFfJdnNMxmwvlR/7AYR5pmJjPB4V256ZdqpZHbmtxncVLH r+z/q2h3uvwe8S5h7xfEC8gqlUCEGC//4BAHiSm7rP8XFexn7WkcG0Rsn NahGReSiZTyPDJzAQSEqyUK9JqHSowdPFYVXdb6GlqlAq/iWMZ7W2lw4z J29iH0ny5DUrmKAPyKHn7ibn+s1UGVcP+ozVyTyX1YvFbO3kUVDx5WRKY Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10991"; a="28164727" X-IronPort-AV: E=Sophos;i="6.06,176,1705392000"; d="scan'208";a="28164727" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Feb 2024 10:34:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10991"; a="936684742" X-IronPort-AV: E=Sophos;i="6.06,176,1705392000"; d="scan'208";a="936684742" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 21 Feb 2024 10:34:48 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id CCD9C34C; Wed, 21 Feb 2024 20:34:46 +0200 (EET) From: Andy Shevchenko To: Greg Kroah-Hartman , Andy Shevchenko , Thomas Gleixner , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-tegra@vger.kernel.org Cc: Jiri Slaby , Joel Stanley , Andrew Jeffery , Florian Fainelli , Ray Jui , Scott Branden , Broadcom internal kernel review list , Al Cooper , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Paul Cercueil , Vladimir Zapolskiy , Thierry Reding , Jonathan Hunter , Kunihiko Hayashi , Masami Hiramatsu Subject: [PATCH v1 02/14] serial: core: Add UPIO_UNSET constant for unset port type Date: Wed, 21 Feb 2024 20:31:18 +0200 Message-ID: <20240221183442.4124354-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.43.0.rc1.1.gbec44491f096 In-Reply-To: <20240221183442.4124354-1-andriy.shevchenko@linux.intel.com> References: <20240221183442.4124354-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240221_103515_994468_5830CB75 X-CRM114-Status: GOOD ( 13.65 ) 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 In some APIs we would like to assign the special value to iotype and compare against it in another places. Introduce UPIO_UNSET for this purpose. Note, we can't use 0, because it's a valid value for IO port access. Signed-off-by: Andy Shevchenko --- include/linux/serial_core.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 2d2ec99eca93..2b0526ae1fac 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -470,6 +470,7 @@ struct uart_port { unsigned char iotype; /* io access style */ +#define UPIO_UNSET ((unsigned char)~0U) /* UCHAR_MAX */ #define UPIO_PORT (SERIAL_IO_PORT) /* 8b I/O port access */ #define UPIO_HUB6 (SERIAL_IO_HUB6) /* Hub6 ISA card */ #define UPIO_MEM (SERIAL_IO_MEM) /* driver-specific */