linux-kernel - [PATCH] uio: uio_fsl_elbc_gpcm: Use module_platform

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Message-ID: <20150708045426.GA12375@vaishali-Ideapad-Z570>
Date:	Wed, 8 Jul 2015 10:24:27 +0530
From:	Vaishali Thakkar <vthakkar1994@...il.com>
To:	"Hans J. Koch" <hjk@...sjkoch.de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] uio: uio_fsl_elbc_gpcm: Use module_platform_driver

Use module_platform_driver for drivers whose init and exit functions
only register and unregister, respectively.

A simplified version of the Coccinelle semantic patch that performs
this transformation is as follows:

@a@
identifier f, x;
@@
-static f(...) { return platform_driver_register(&x); }

@b depends on a@
identifier e, a.x;
@@
-static e(...) { platform_driver_unregister(&x); }

@c depends on a && b@
identifier a.f;
declarer name module_init;
@@
-module_init(f);

@d depends on a && b && c@
identifier b.e, a.x;
declarer name module_exit;
declarer name module_platform_driver;
@@
-module_exit(e);
+module_platform_driver(x);

Signed-off-by: Vaishali Thakkar <vthakkar1994@...il.com>
---
 drivers/uio/uio_fsl_elbc_gpcm.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/uio/uio_fsl_elbc_gpcm.c b/drivers/uio/uio_fsl_elbc_gpcm.c
index b6cac91..2bcf80c 100644
--- a/drivers/uio/uio_fsl_elbc_gpcm.c
+++ b/drivers/uio/uio_fsl_elbc_gpcm.c
@@ -480,19 +480,7 @@ static struct platform_driver uio_fsl_elbc_gpcm_driver = {
 	.probe = uio_fsl_elbc_gpcm_probe,
 	.remove = uio_fsl_elbc_gpcm_remove,
 };
-
-static int __init uio_fsl_elbc_gpcm_init(void)
-{
-	return platform_driver_register(&uio_fsl_elbc_gpcm_driver);
-}
-
-static void __exit uio_fsl_elbc_gpcm_exit(void)
-{
-	platform_driver_unregister(&uio_fsl_elbc_gpcm_driver);
-}
-
-module_init(uio_fsl_elbc_gpcm_init);
-module_exit(uio_fsl_elbc_gpcm_exit);
+module_platform_driver(uio_fsl_elbc_gpcm_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("John Ogness <john.ogness@...utronix.de>");
-- 
1.9.1

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