From: Bryan Wu <cooloney@kernel.org>
Date: Wed, 7 Jan 2009 16:21:18 +0000 (+0800)
Subject: USB: composite: Fix bug: should test set_alt function pointer before use it
X-Git-Tag: v2.6.29-rc3~6^2~20
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?p=linux-2.6-omap-h63xx.git;a=commitdiff_plain;h=dd4dff8b035f6dda69ece98e20d4c2d76b9f97d1

USB: composite: Fix bug: should test set_alt function pointer before use it

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index f2da0269e1b..363951eb333 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -772,7 +772,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
 		f = cdev->config->interface[w_index];
 		if (!f)
 			break;
-		if (w_value && !f->get_alt)
+		if (w_value && !f->set_alt)
 			break;
 		value = f->set_alt(f, w_index, w_value);
 		break;