In include/linux/usb/hcd.h, we have /* class requests from USB 3.0 hub spec, table 10-5 */ #define SetHubDepth (0x3000 | HUB_SET_DEPTH) #define GetPortErrorCount (0x8000 | HUB_GET_PORT_ERR_COUNT) However, from the usb 3.1 spec I downloaded at http://www.usb.org/developers/docs/, table 10-5 appears to be unrelated (Table 10-5. Enhanced SuperSpeed Hub Descriptor). Table 10-7 (Table 10-7. Hub Class Requests) lists the two values as: Request bmRequestType bRequest wValue wIndex wLength Data SetHubDepth 00100000B SET_HUB_DEPTH Hub Depth Zero Zero None GetPortErrorCount 10100011B GET_PORT_ERR_COUNT Zero Port Two Number of Link Errors on this port It appears the correct bmRequestType values should be: #define SetHubDepth (0x2000 | HUB_SET_DEPTH) #define GetPortErrorCount (0xa300 | HUB_GET_PORT_ERR_COUNT) Which are the bmRequestType values of SetHubFeature and GetPortStatus (and friends). These lines were introduced in commit 0eadcc09203349b11ca477ec367079b23d32ab91 Author: Tatyana Brokhman <tlinder@xxxxxxxxxxxxxx> Date: Mon Nov 1 18:18:24 2010 +0200 usb: USB3.0 ch11 definitions Adding hub SuperSpeed usb definitions as defined by ch10 of the USB3.0 spec. Signed-off-by: Tatyana Brokhman <tlinder@xxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx> The values are only used by dummy_hcd which does nothing with them and by max3421-hcd which returns an error. Can anyone clarify what I'm missing or if the values are actually wrong? -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
