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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 2db0327db4f2a78339c0263d0d848d457377c823..ac9099af7cd76a17b5373c7243f3927dfe16d4ad 100644 (file)
--- 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)