USB: core: add endpoint-blacklist quirk
authorJohan Hovold <johan@kernel.org>
Mon, 3 Feb 2020 15:38:28 +0000 (16:38 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 2 Dec 2020 07:29:29 +0000 (08:29 +0100)
commitd3fa1c6a3506d44e7f74f25fcb9beb1df66521f5
treeab2d88f55e6f6b1ebc033c0ff61c17a5da776a29
parentf8e2877dfb300c0615e8b5bbb6c248ea1369e2e5
USB: core: add endpoint-blacklist quirk

commit 73f8bda9b5dc1c69df2bc55c0cbb24461a6391a9 upstream

Add a new device quirk that can be used to blacklist endpoints.

Since commit 3e4f8e21c4f2 ("USB: core: fix check for duplicate
endpoints") USB core ignores any duplicate endpoints found during
descriptor parsing.

In order to handle devices where the first interfaces with duplicate
endpoints are the ones that should have their endpoints ignored, we need
to add a blacklist.

Tested-by: edes <edes@gmx.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200203153830.26394-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/config.c
drivers/usb/core/quirks.c
drivers/usb/core/usb.h
include/linux/usb/quirks.h