From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Mark Brown <broonie@kernel.org>,
Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH v3 1/3] parport: Introduce module_parport_driver() helper macro
Date: Wed, 3 Mar 2021 11:16:40 +0200 [thread overview]
Message-ID: <20210303091642.23929-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20210303091642.23929-1-andriy.shevchenko@linux.intel.com>
Introduce module_parport_driver() helper macro to reduce boilerplate
in the existing and new code.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
---
include/linux/parport.h | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/include/linux/parport.h b/include/linux/parport.h
index f981f794c850..1c16ffb8b908 100644
--- a/include/linux/parport.h
+++ b/include/linux/parport.h
@@ -332,9 +332,19 @@ int __must_check __parport_register_driver(struct parport_driver *,
__parport_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
/* Unregister a high-level driver. */
-extern void parport_unregister_driver (struct parport_driver *);
void parport_unregister_driver(struct parport_driver *);
+/**
+ * module_parport_driver() - Helper macro for registering a modular parport driver
+ * @__parport_driver: struct parport_driver to be used
+ *
+ * Helper macro for parport drivers which do not do anything special in module
+ * init and exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit().
+ */
+#define module_parport_driver(__parport_driver) \
+ module_driver(__parport_driver, parport_register_driver, parport_unregister_driver)
+
/* If parport_register_driver doesn't fit your needs, perhaps
* parport_find_xxx does. */
extern struct parport *parport_find_number (int);
--
2.30.1
next prev parent reply other threads:[~2021-03-03 15:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 9:16 [PATCH v3 0/3] parport: Introduce module_parport_driver() and use it Andy Shevchenko
2021-03-03 9:16 ` Andy Shevchenko [this message]
2021-03-04 8:26 ` [PATCH v3 1/3] parport: Introduce module_parport_driver() helper macro Greg Kroah-Hartman
2021-03-03 9:16 ` [PATCH v3 2/3] spi: butterfly: Switch to use module_parport_driver() Andy Shevchenko
2021-03-03 9:16 ` [PATCH v3 3/3] spi: lm70llp: " Andy Shevchenko
2021-03-03 20:24 ` [PATCH v3 0/3] parport: Introduce module_parport_driver() and use it Mark Brown
2021-03-04 8:27 ` Greg Kroah-Hartman
2021-03-04 15:05 ` Mark Brown
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