On 26.05.2017 13:27, YD wrote:
From: YD Tseng <[email protected]>One of the xHCI host controllers supports both USB 3.1/3.0 extended speed protocol lists. The content of the lists is shown as below. In xhci-mem.c, the USB 3.1 speed is parsed first, the min_rev of usb3_rhub is set as 0x10. And then USB 3.0 is parsed. However, the min_rev of usb3_rhub will be changed to 0x00. If USB 3.1 device is connected behind this host controller, the speed of USB 3.1 device just reports 5G speed using lsusb. 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 01 08 00 00 00 00 00 40 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 02 08 10 03 55 53 42 20 01 02 00 00 00 00 00 00 //USB 3.1 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 40 02 08 00 03 55 53 42 20 03 06 00 00 00 00 00 00 //USB 3.0 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 60 02 08 00 02 55 53 42 20 09 0E 19 00 00 00 00 00 //USB 2.0 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 This patch works around for parsing extended speed protocol lists. If the xHCI controller supports USB 3.1 and 3.0 extended speed protocol, it could show as one 3.1 roothub. Signed-off-by: YD Tseng <[email protected]> ---
There is one small complaint from checkpatch about the commit message itself: WARNING: Possible unwrapped commit description (prefer a maximum 75 chars per line) #11: this host controller, the speed of USB 3.1 device just reports 5G speed using total: 0 errors, 1 warnings, 23 lines checked I'll fix that myself, no need to resend Applied, Thanks -Mathias -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
