USB: cdc-wdm: sanitize error returns

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>
Cc: stable <stable@vger.kernel.org>
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 c6f6560d436c804bba1f539a2b6cd1c12be8633d..b29a9815e4d2f76c1c5b423e5dd18d3f52174afa 100644 (file)
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -531,7 +531,7 @@ 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)