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
Cc: "Jiri Slaby" <jirislaby@kernel.org>,
"Joel Stanley" <joel@jms.id.au>,
"Andrew Jeffery" <andrew@codeconstruct.com.au>,
"Florian Fainelli" <florian.fainelli@broadcom.com>,
"Ray Jui" <rjui@broadcom.com>,
"Scott Branden" <sbranden@broadcom.com>,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>,
"Al Cooper" <alcooperx@gmail.com>,
"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
"Paul Cercueil" <paul@crapouillou.net>,
"Vladimir Zapolskiy" <vz@mleia.com>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Kunihiko Hayashi" <hayashi.kunihiko@socionext.com>,
"Masami Hiramatsu" <mhiramat@kernel.org>
Subject: [PATCH v1 02/14] serial: core: Add UPIO_UNSET constant for unset port type
Date: Wed, 21 Feb 2024 20:31:18 +0200 [thread overview]
Message-ID: <20240221183442.4124354-3-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20240221183442.4124354-1-andriy.shevchenko@linux.intel.com>
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 <andriy.shevchenko@linux.intel.com>
---
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 */
--
2.43.0.rc1.1.gbec44491f096
next prev parent reply other threads:[~2024-02-21 18:34 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-21 18:31 [rft, PATCH v1 00/14] serial: Add a helper to parse device properties and more Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 01/14] serial: core: Move struct uart_port::quirks closer to possible values Andy Shevchenko
2024-02-21 18:54 ` Hugo Villeneuve
2024-02-21 19:04 ` Andy Shevchenko
2024-02-21 18:31 ` Andy Shevchenko [this message]
2024-02-21 18:47 ` [PATCH v1 02/14] serial: core: Add UPIO_UNSET constant for unset port type Florian Fainelli
2024-02-21 18:53 ` Andy Shevchenko
2024-02-22 6:58 ` Jiri Slaby
2024-02-22 13:21 ` Andy Shevchenko
2024-02-23 5:42 ` Jiri Slaby
2024-02-23 14:59 ` Andy Shevchenko
2024-02-26 14:17 ` Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 03/14] serial: port: Introduce a common helper to read properties Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 04/14] serial: 8250_aspeed_vuart: Switch to use uart_read_port_properties() Andy Shevchenko
2024-02-26 4:13 ` Andrew Jeffery
2024-02-21 18:31 ` [PATCH v1 05/14] serial: 8250_bcm2835aux: " Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 06/14] serial: 8250_bcm7271: " Andy Shevchenko
2024-02-23 4:14 ` kernel test robot
2024-02-23 15:01 ` Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 07/14] serial: 8250_dw: " Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 08/14] serial: 8250_ingenic: " Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 09/14] serial: 8250_lpc18xx: " Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 10/14] serial: 8250_of: " Andy Shevchenko
2024-02-22 0:37 ` Andrew Jeffery
2024-02-22 13:23 ` Andy Shevchenko
2024-02-22 16:43 ` Andy Shevchenko
2024-02-22 16:47 ` Andy Shevchenko
2024-02-22 17:39 ` Florian Fainelli
2024-02-22 19:54 ` Florian Fainelli
2024-02-23 15:02 ` Andy Shevchenko
2024-02-26 4:12 ` Andrew Jeffery
2024-02-21 18:31 ` [PATCH v1 11/14] serial: 8250_omap: " Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 12/14] serial: 8250_pxa: " Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 13/14] serial: 8250_tegra: " Andy Shevchenko
2024-02-21 18:31 ` [PATCH v1 14/14] serial: 8250_uniphier: " Andy Shevchenko
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