Message ID | 20240226142514.1485246-3-andriy.shevchenko@linux.intel.com |
---|---|
State | Superseded, archived |
Headers | show
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a="937030138" X-IronPort-AV: E=Sophos;i="6.06,185,1705392000"; d="scan'208";a="937030138" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 26 Feb 2024 06:25:17 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 18FCD426; Mon, 26 Feb 2024 16:25:16 +0200 (EET) From: Andy Shevchenko <andriy.shevchenko@linux.intel.com> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, Thomas Gleixner <tglx@linutronix.de>, 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 Subject: [PATCH v2 02/14] serial: core: Add UPIO_UNKNOWN constant for unknown port type Date: Mon, 26 Feb 2024 16:19:18 +0200 Message-ID: <20240226142514.1485246-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.43.0.rc1.1.gbec44491f096 In-Reply-To: <20240226142514.1485246-1-andriy.shevchenko@linux.intel.com> References: <20240226142514.1485246-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-aspeed@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux ASPEED SoC development <linux-aspeed.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linux-aspeed>, <mailto:linux-aspeed-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linux-aspeed/> List-Post: <mailto:linux-aspeed@lists.ozlabs.org> List-Help: <mailto:linux-aspeed-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linux-aspeed>, <mailto:linux-aspeed-request@lists.ozlabs.org?subject=subscribe> Cc: Scott Branden <sbranden@broadcom.com>, Florian Fainelli <florian.fainelli@broadcom.com>, Ray Jui <rjui@broadcom.com>, Al Cooper <alcooperx@gmail.com>, Jonathan Hunter <jonathanh@nvidia.com>, Kunihiko Hayashi <hayashi.kunihiko@socionext.com>, Vladimir Zapolskiy <vz@mleia.com>, Paul Cercueil <paul@crapouillou.net>, Thierry Reding <thierry.reding@gmail.com>, Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>, =?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>, Andrew Jeffery <andrew@codeconstruct.com.au>, Jiri Slaby <jirislaby@kernel.org>, Masami Hiramatsu <mhiramat@kernel.org> Errors-To: linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linux-aspeed" <linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
serial: Add a helper to parse device properties and more
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expand
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diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 2d2ec99eca93..c2cf9484014c 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_UNKNOWN ((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 */
In some APIs we would like to assign the special value to iotype and compare against it in another places. Introduce UPIO_UNKNOWN for this purpose. Note, we can't use 0, because it's a valid value for IO port access. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- include/linux/serial_core.h | 1 + 1 file changed, 1 insertion(+)