Oct 03 2015

Staging: most: Use module_platform_driver 

Author: Shraddha Barke <shraddha.6596@gmail.com>

Use module_platform_driver for drivers whose init and exit functions
only register and unregister, respectively. Thus remove some
boilerplate code.

A simplified version of Coccinelle patch -

@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: Shraddha Barke 
Signed-off-by: Greg Kroah-Hartman 

---
 drivers/staging/most/hdm-dim2/dim2_hdm.c | 21 +--------------------
 1 file changed, 1 insertion(+), 20 deletions(-)
 
diff --git a/drivers/staging/most/hdm-dim2/dim2_hdm.c b/drivers/staging/most/hdm-dim2/dim2_hdm.c
index 1bb70b7..c7e956f 100644
--- a/drivers/staging/most/hdm-dim2/dim2_hdm.c
+++ b/drivers/staging/most/hdm-dim2/dim2_hdm.c
@@ -926,26 +926,7 @@ static struct platform_driver dim2_driver = {
 	},
 };
 
-/**
- * dim2_hdm_init - Driver Registration Routine
- */
-static int __init dim2_hdm_init(void)
-{
-	pr_info("dim2_hdm_init()\n");
-	return platform_driver_register(&dim2_driver);
-}
-
-/**
- * dim2_hdm_exit - Driver Cleanup Routine
- **/
-static void __exit dim2_hdm_exit(void)
-{
-	pr_info("dim2_hdm_exit()\n");
-	platform_driver_unregister(&dim2_driver);
-}
-
-module_init(dim2_hdm_init);
-module_exit(dim2_hdm_exit);
+module_platform_driver(dim2_driver);
 
 MODULE_AUTHOR("Jain Roy Ambi <JainRoy.Ambi@microchip.com>");
 MODULE_AUTHOR("Andrey Shvetsov <andrey.shvetsov@k2l.de>");

qlambert