[Lula] Read Command Stalls

[Balan, Vineeth (IE10)]

Hi all

 

I am developing a USB driver (HCD and USBD) for an OHCI controller.

BULK IN and OUT are working fine , but the problem is with the device
(USB FLASH DRVE) to respond with data.

 

 The command sequence that I am using: 

 

1. Read 10  - response is STALL.

I issue a  clear feature command. And a Bulk IN to retrieve the CSW 

of the failed Read 10.

2. Request Sense: 18 bytes of sense data and CSW. Sense data shows 06 -
UNIT Attention condition.

3. Read 10  Stall again. 

 

All suggestions are welcome..

 

 

Regards,

Vineeth