Input: aiptek - fix endpoint sanity check

stable inclusion
from stable-v4.19.100
commit d6ca8b03fd808b0fa05ced36b6a5e75a337fad8d
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/IADGSO
CVE: CVE-2022-48836

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d6ca8b03fd808b0fa05ced36b6a5e75a337fad8d



--------------------------------

commit 3111491f upstream.

The driver was checking the number of endpoints of the first alternate
setting instead of the current one, something which could lead to the
driver binding to an invalid interface.

This in turn could cause the driver to misbehave or trigger a WARN() in
usb_submit_urb() that kernels with panic_on_warn set would choke on.

Fixes: 8e20cf2b ("Input: aiptek - fix crash on detecting device without endpoints")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Vladis Dronov <vdronov@redhat.com>
Link: https://lore.kernel.org/r/20191210113737.4016-3-johan@kernel.org


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Yuan Can <yuancan@huawei.com>