linux-kernel - Re: [PATCH v5] usb: usb3.0 ch9 definitions

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Date:	Sun, 10 Oct 2010 04:10:12 -0400
From:	Matthew Wilcox <willy@...ux.intel.com>
To:	Tatyana Brokhman <tlinder@...eaurora.org>
Cc:	linux-usb@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] usb: usb3.0 ch9 definitions

On Sat, Oct 09, 2010 at 04:46:12PM +0200, Tatyana Brokhman wrote:
> +/*
> + * SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB
> + * specific device level capabilities
> + */
> +#define		USB_SS_CAP_TYPE		3
> +struct usb_ss_cap_descriptor {		/* Link Power Management */
> +	__u8  bLength;
> +	__u8  bDescriptorType;
> +	__u8  bDevCapabilityType;
> +	__u8  bmAttributes;
> +#define USB_LTM_SUPPORT			(1 << 1) /* supports LTM */
> +	__le16 wSpeedSupported;
> +#define USB_LOW_SPEED_OPERATION		(1)	 /* Low speed operation */
> +#define USB_FULL_SPEED_OPERATION	(1 << 1) /* Full speed operation */
> +#define USB_HIGH_SPEED_OPERATION	(1 << 2) /* High speed operation */
> +#define USB_5GBPS_OPERATION		(1 << 3) /* Operation at 5Gbps */
> +	__u8  bFunctionalitySupport;
> +	__u8  bU1devExitLat;
> +	__le16 bU2DevExitLat;
> +} __attribute__((packed));
> +
> +#define USB_DT_USB_SS_CAP_SIZE	10

Hang on, if we're looking at page 10-57 of "USB 3 0 (11132008)-final.pdf",
it's 12 bytes long with the last two bytes being wReserved.  Is there
an erratum that changes this?  I just looked through
"USB3_Errata [June 2010].pdf" and don't see any errata that look germane.

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