Re: [PATCH 1/3] usbip: only dump valid port status

[Joe Perches <joe@perches.com>]

On Mon, 2011-06-13 at 23:47 +0200, Németh Márton wrote:
> From: Márton Németh <nm127@freemail.hu>
> 
> 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>
> ---
>  drivers/staging/usbip/vhci_hcd.c |    7 +++++--
>  1 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c
> index 359b464..512a97f 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]);
> +		}

Umm, you mean to use "rhport > 0" yes?