tree fc78ef1e46e3105e493b57a09a1a6558baede932
parent 90507d54f712d81b74815ef3a4bbb555cd9fab2f
author Johan Hovold <johan@kernel.org> 1483457988 +0100
committer Johan Hovold <johan@kernel.org> 1483522638 +0100

USB: serial: keyspan_pda: verify endpoints at probe

Check for the expected endpoints in attach() and fail loudly if not
present.

Note that failing to do this appears to be benign since da280e348866
("USB: keyspan_pda: clean up write-urb busy handling") which prevents a
NULL-pointer dereference in write() by never marking a non-existent
write-urb as free.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>	# < v3.3
Signed-off-by: Johan Hovold <johan@kernel.org>