From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 1 Jun 2010 21:04:44 +0000 (+0200)
Subject: usb: gadget: Do not take BKL for gadget->ops->ioctl
X-Git-Tag: upstream/snapshot3+hdmi~13509^2~115
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1548b13b75a2ec06f46220004e91c37818be6c18;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

usb: gadget: Do not take BKL for gadget->ops->ioctl

There is no gadget driver in the tree that
actually implements the ioctl operation, so
obviously it is not necessary to hold the
BKL around the call.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 2aaa0f7..c51c213 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -714,9 +714,7 @@ static long ffs_ep0_ioctl(struct file *file, unsigned code, unsigned long value)
 		struct ffs_function *func = ffs->func;
 		ret = func ? ffs_func_revmap_intf(func, value) : -ENODEV;
 	} else if (gadget->ops->ioctl) {
-		lock_kernel();
 		ret = gadget->ops->ioctl(gadget, code, value);
-		unlock_kernel();
 	} else {
 		ret = -ENOTTY;
 	}
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 63fc171..fc35406 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1299,11 +1299,9 @@ static long dev_ioctl (struct file *fd, unsigned code, unsigned long value)
 	struct usb_gadget	*gadget = dev->gadget;
 	long ret = -ENOTTY;
 
-	if (gadget->ops->ioctl) {
-		lock_kernel();
+	if (gadget->ops->ioctl)
 		ret = gadget->ops->ioctl (gadget, code, value);
-		unlock_kernel();
-	}
+
 	return ret;
 }