Re: USB Enumeration

[Udit Kumar <udit.kumar@nxp.com>]

Thanks Star. 
I will open the ticket with needed information. 

What looks to me when we are enabling slot again
then memory for all endpoint is not allocated.
Allocation is done for endpoint[0] say slot context.

FYI, If I ignore this error then assert is reported in 
/MdeModulePkg/Core/Dxe/Mem/Page.c(722)

Regards
Udit

> -----Original Message-----
> From: Zeng, Star [mailto:star.zeng@intel.com]
> Sent: Thursday, October 05, 2017 6:16 PM
> To: Udit Kumar <udit.kumar@nxp.com>; edk2-devel-01 <edk2-
> devel@lists.01.org>
> Cc: Zeng, Star <star.zeng@intel.com>
> Subject: RE: [edk2] USB Enumeration
> 
> We (I) did not see this appearance before, but the ASSERT should be unexpected.
> 
> Could you try to use error handling instead of ASSERT for this line of code and
> see whether it works or not for you?
> 
> What are the models of the Host controller and USB device?
> Do you have full debug log for that?
> Did you meet the ASSERT before(for example, using the code base at the
> beginning of this year) with the same Host controller and USB device?
> 
> Could you submit Bugzilla at https://bugzilla.tianocore.org/ with the information
> for the questions you have above? Then we can have follow up to check the
> detail by the information provided (if we can produce it by ourselves, that will be
> better). :)
> 
> 
> Thanks,
> Star
> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Udit
> Kumar
> Sent: Thursday, October 5, 2017 8:05 PM
> To: edk2-devel-01 <edk2-devel@lists.01.org>
> Subject: [edk2] USB Enumeration
> 
> Dear Edk2 Expert,
> 
> With edk2 shell, I am doing simple copy with USB, Flow is below
> 
> Start- USB device is enumerated and given address 1.
> 1. On Shell , cp a b
> 2- After a while Host controller reports an error
> 3- Layer above Host controller, reset the USB port
> 4-  and Slot is enabled again ( this time address 2 was given)
> 5- Now FatIFileAccess calls FatCleanupVolume, which in turn calls
> XhcBulkTransfer And assert is reported at
> MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c(1800): TrsRing != ((void *) 0)
> 
> Is this expected behavior to assert, or reporting an error will be fine in such
> cases.
> 
> Thanks for help
> 
> Regards
> Udit
> 
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