On 26.05.2017 13:27, YD wrote:
From: YD Tseng <yd_tseng@xxxxxxxxxxxxxx>
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 <yd_tseng@xxxxxxxxxxxxxx>
---
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
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