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The wIndex parameter of vhci_hub_control() is always zero when the request type is GetHubDescriptor, see drivers/usb/core/hub.c::get_hub_descriptor() and Universal Serial Bus Specification revision 2.0 (April 27, 2000) Section 11.24.2.5 "Get Hub Descriptor". This means the variable rhport will not contain any useful index. Only use valid rhport values. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
TODO: - more discussion about the protocol - testing - review of the userspace interface - document the protocol Please send patches for this code to Greg Kroah-Hartman <greg@kroah.com>