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Groups > linux.kernel > #1336337

[PATCH] drm/udl: Use module_usb_driver

From Amitoj Kaur Chawla <amitoj1606@gmail.com>
Newsgroups linux.kernel
Subject [PATCH] drm/udl: Use module_usb_driver
Date 2016-02-17 13:20 +0100
Message-ID <r39fm-6j5-51@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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Macro module_usb_driver is used for drivers whose init and exit paths
only register and unregister to usb API. So remove boilerplate code to
make code simpler by using module_usb_driver.

This change was made with the help of the following Coccinelle
semantic patch:

//<smpl>
@a@
identifier f, x;
@@
-static f(...) { return usb_register(&x); }

@b depends on a@
identifier e, a.x;
@@
-static e(...) { usb_deregister(&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_usb_driver;
@@
-module_exit(e);
+module_usb_driver(x);
//</smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
---
 drivers/gpu/drm/udl/udl_drv.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index d5728ec..772ec9e 100644
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -125,17 +125,5 @@ static struct usb_driver udl_driver = {
 	.disconnect = udl_usb_disconnect,
 	.id_table = id_table,
 };
-
-static int __init udl_init(void)
-{
-	return usb_register(&udl_driver);
-}
-
-static void __exit udl_exit(void)
-{
-	usb_deregister(&udl_driver);
-}
-
-module_init(udl_init);
-module_exit(udl_exit);
+module_usb_driver(udl_driver);
 MODULE_LICENSE("GPL");
-- 
1.9.1

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[PATCH] drm/udl: Use module_usb_driver Amitoj Kaur Chawla <amitoj1606@gmail.com> - 2016-02-17 13:20 +0100
  Re: [PATCH] drm/udl: Use module_usb_driver Daniel Vetter <daniel@ffwll.ch> - 2016-02-17 14:20 +0100

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