Bug 187861

Summary:	cdc_mbim: probe of 2-2:1.12 failed with error -22
Product:	Drivers	Reporter:	Kai-Heng Feng (kai.heng.feng)
Component:	USB	Assignee:	Greg Kroah-Hartman (greg)
Status:	RESOLVED INVALID
Severity:	normal	CC:	kai.heng.feng
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	4.9.0-rc3	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	dmesg, usbcore and xhci_hcd dynamic debug enabled

Description Kai-Heng Feng 2016-11-16 10:28:13 UTC

Created attachment 244751 [details]
dmesg, usbcore and xhci_hcd dynamic debug enabled

Originally I send a not-working patch to the mailing list [1], turns out the patch is far from correct.

Bjørn Mork suggests that we can cover the USB3 pair diff pins with tape to do some experiment, but the vendor told me that there's no such pin.

According to the attached log, looks like xhci driver failed to get status from port after resume, eventually make the cdc_mbim probe failed:

[   10.038428] xhci_hcd 0000:00:14.0: get port status, actual port 1 status  = 0x202c0
[   10.038429] xhci_hcd 0000:00:14.0: Get port status returned 0x102c0
[   10.038463] usb usb2-port2: status 0001.02c0 after resume, -19
[   10.038465] usb 2-2: can't resume, status -19
[   10.038465] usb usb2-port2: logical disconnect
[   10.038472] xhci_hcd 0000:00:14.0: Cannot set link state.
[   10.038528] usb usb2-port2: cannot disable (err = -32)
[   10.038575] cdc_mbim 2-2:1.12: usb_probe_interface
[   10.038577] cdc_mbim 2-2:1.12: usb_probe_interface - got id
[   10.038579] cdc_mbim: probe of 2-2:1.12 failed with error -22

[1] https://patchwork.ozlabs.org/patch/691177/

Comment 1 Kai-Heng Feng 2016-11-16 10:31:37 UTC

This is tested on top of xhci/for-usb-next branch, commit 6005a545cadb2adca64350c7aee17d002563e8c7  usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices

Comment 2 Greg Kroah-Hartman 2016-11-16 10:34:50 UTC

On Wed, Nov 16, 2016 at 10:28:13AM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=187861
> 
>             Bug ID: 187861
>            Summary: cdc_mbim: probe of 2-2:1.12 failed with error -22
>            Product: Drivers
>            Version: 2.5
>     Kernel Version: 4.9.0-rc3

All USB bugs should be sent to the linux-usb@vger.kernel.org mailing
list, and not entered into bugzilla.  Please bring this issue up there,
if it is still a problem in the latest kernel release.

Comment 3 Kai-Heng Feng 2016-11-16 10:40:02 UTC

Thanks for the notice, I'll bring the issue up there.