linux-kernel - [PATCH 2/3] use the new request_module

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Date:	Sun, 8 Feb 2009 10:42:40 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	linux-kernel@...r.kernel.org
Cc:	Arjan van de Ven <arjan@...radead.org>, rusty@...tcorp.com.au,
	jkosina@...e.cz, mchehab@...radead.org
Subject: [PATCH 2/3] use the new request_module_nowait() in the hid driver


>From b8c36ec88e272ba2e755e6104579f1e751ee81f8 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@...ux.intel.com>
Date: Sun, 1 Feb 2009 12:02:39 -0800
Subject: [PATCH] use the new request_module_nowait() in the hid driver

Now that there is a request_module_nowait(), use it in the hid driver.
This gets rid of a kernel thread, and also greatly simplifies the code...

Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com>
---
 drivers/hid/hid-core.c |   19 +------------------
 1 files changed, 1 insertions(+), 18 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 6cad69e..d51331f 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1812,15 +1812,6 @@ void hid_unregister_driver(struct hid_driver *hdrv)
 }
 EXPORT_SYMBOL_GPL(hid_unregister_driver);
 
-#ifdef CONFIG_HID_COMPAT
-static void hid_compat_load(struct work_struct *ws)
-{
-	request_module("hid-dummy");
-}
-static DECLARE_WORK(hid_compat_work, hid_compat_load);
-static struct workqueue_struct *hid_compat_wq;
-#endif
-
 static int __init hid_init(void)
 {
 	int ret;
@@ -1836,12 +1827,7 @@ static int __init hid_init(void)
 		goto err_bus;
 
 #ifdef CONFIG_HID_COMPAT
-	hid_compat_wq = create_singlethread_workqueue("hid_compat");
-	if (!hid_compat_wq) {
-		hidraw_exit();
-		goto err;
-	}
-	queue_work(hid_compat_wq, &hid_compat_work);
+	request_module_nowait("hid-dummy");
 #endif
 
 	return 0;
@@ -1853,9 +1839,6 @@ err:
 
 static void __exit hid_exit(void)
 {
-#ifdef CONFIG_HID_COMPAT
-	destroy_workqueue(hid_compat_wq);
-#endif
 	hidraw_exit();
 	bus_unregister(&hid_bus_type);
 }
-- 
1.6.0.6


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
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