From: Oliver Neukum <oliver@neukum.org>
Date: Fri, 27 Apr 2012 12:23:54 +0000 (+0200)
Subject: USB: cdc-wdm: sanitize error returns
X-Git-Tag: v3.3.8~59
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36ad7025bc4b5883a20ab106473a754cc93c6353;p=thirdparty%2Fkernel%2Fstable.git

USB: cdc-wdm: sanitize error returns

commit 24a85bae5da2b43fed423859c09c5a81ab359473 upstream.

wdm_flush() returns unsanitized USB error codes.
They must be cleaned up to before being anded to user space

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 7b45f6612a50f..b7d492addff19 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -500,7 +500,7 @@ static int wdm_flush(struct file *file, fl_owner_t id)
 		dev_err(&desc->intf->dev, "Error in flush path: %d\n",
 			desc->werr);
 
-	return desc->werr;
+	return usb_translate_errors(desc->werr);
 }
 
 static unsigned int wdm_poll(struct file *file, struct poll_table_struct *wait)