USB: hub: fix SS max number of ports
authorJohan Hovold <johan@kernel.org>
Wed, 10 May 2017 16:18:29 +0000 (18:18 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 May 2017 09:53:02 +0000 (11:53 +0200)
commit93491ced3c87c94b12220dbac0527e1356702179
treee8662374ccf64386ed345ba31a6ad161e2ca6a92
parentbec444cd1c94c48df409a35ad4e5b143c245c3f7
USB: hub: fix SS max number of ports

Add define for the maximum number of ports on a SuperSpeed hub as per
USB 3.1 spec Table 10-5, and use it when verifying the retrieved hub
descriptor.

This specifically avoids benign attempts to update the DeviceRemovable
mask for non-existing ports (should we get that far).

Fixes: dbe79bbe9dcb ("USB 3.0 Hub Changes")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/hub.c
include/uapi/linux/usb/ch11.h