From: Jonathan Corbet <corbet@lwn.net>
Date: Thu, 15 May 2008 16:25:44 +0000 (-0600)
Subject: HID: cdev lock_kernel() pushdown
X-Git-Tag: v2.6.27-rc1~1103^2~132
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=702e57d9ef7002f8d362faa6ddebc59e6d43fa05;p=linux-2.6

HID: cdev lock_kernel() pushdown

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
---

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 1ca6f4635e..2fde6c63f4 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -30,6 +30,7 @@
 #include <linux/major.h>
 #include <linux/hid.h>
 #include <linux/mutex.h>
+#include <linux/smp_lock.h>
 
 #include <linux/hidraw.h>
 
@@ -157,6 +158,7 @@ static int hidraw_open(struct inode *inode, struct file *file)
 	struct hidraw_list *list;
 	int err = 0;
 
+	lock_kernel();
 	if (!(list = kzalloc(sizeof(struct hidraw_list), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto out;
@@ -183,6 +185,7 @@ static int hidraw_open(struct inode *inode, struct file *file)
 out_unlock:
 	spin_unlock(&minors_lock);
 out:
+	unlock_kernel();
 	return err;
 
 }