Re: "USB MS CV Failing"

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On Wed, Aug 12, 2009 at 3:59 PM, velempati
Chiranjeevi<velem.usb@xxxxxxxxx> wrote:
> Hi,
>
> I am currently working on the gadget framework. While performing the
> Mass storage CV test,
> around 50 % of the time the test passes and around 50 % of the time
> the test fails with the
> same code base.
>
> After doing a mass storage reset and after clearing the bulk-in &
> bulk-out endpoints, the host
> tries to issue the INQUIRY command, and the devices is not able to
> receive the command.
>
> Is the issue, with the latency involved with the kernel thread? When
> the test passes, how did the
> INQUIRY command get through with the same code base.
>
> Is there a way to decrease the latency of the kernel thread of the mass storage?

AFAIK there is no timing requirement at class level??. When it fails,
till what level the USB packet reaches ? By level i mean ->can you see
the packet in :

i) USB bus
ii) @ UDC driver
iii) @ Gadget Driver
....
.....
>
>
> Thanks,
> Chiranjeevi.
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