Hi Greg,
One of our xHCI host controlers has 3 extended speed protocol lists. The
content of extended speed protocol 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
-----Original Message-----
From: Greg KH [mailto:[email protected]]
Sent: Tuesday, May 23, 2017 5:18 PM
To: YD
Cc: [email protected]; [email protected];
[email protected]
Subject: Re: [PATCH] usb:host:xhci:USB 3.1 Speed
On Tue, May 23, 2017 at 03:00:47PM +0800, YD wrote:
> From: YD Tseng <[email protected]>
>
> Hi Mathias,
>
> 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]>
>
> ---
>
> A file is modified.
> drivers/usb/host/xhci-mem.c Modified file
What does this mean?
>
> diff -up xhci-mem{.orig,} > /tmp/patch
> --- xhci-mem.c.orig 2017-04-08 15:35:38.000000000 +0800
> +++ xhci-mem.c 2017-05-22 11:56:21.362907677 +0800
You need to make the patch "deeper", please see
Documentation/SubmittingPatches for how to create it properly.
thanks,
greg k-h
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