From bfb4ce20708156fc1d3aae8771a13acd8434118c Mon Sep 17 00:00:00 2001 From: =?utf8?q?M=C3=A1rton=20N=C3=A9meth?= Date: Mon, 13 Jun 2011 23:47:39 +0200 Subject: [PATCH] usbip: only dump valid port status MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Greg Kroah-Hartman --- drivers/staging/usbip/vhci_hcd.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c index 359b4647b601..658c674b8785 100644 --- a/drivers/staging/usbip/vhci_hcd.c +++ b/drivers/staging/usbip/vhci_hcd.c @@ -464,8 +464,11 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, if (usbip_dbg_flag_vhci_rh) { pr_debug("port %d\n", rhport); - dump_port_status(prev_port_status[rhport]); - dump_port_status(dum->port_status[rhport]); + /* Only dump valid port status */ + if (rhport >= 0) { + dump_port_status(prev_port_status[rhport]); + dump_port_status(dum->port_status[rhport]); + } } usbip_dbg_vhci_rh(" bye\n"); -- 2.20.1