Hi:

I' writing a driver for a USB device and Ive run into an error that has me stumped.
 
So far the code is working well, it does a number of reads and writes and all goes as expected. There is one case where 
I need to do a write that is 63.4K in size. When I do this one, usbd_urb_status gives 0x2000010. Which I understand is 
completed with error and NO_MEM_FOR_TRANSFER. 

I used usbd_alloc to create the block of data to be written. 
The usbd_io call returned EOK, and the bulk output callback is called. In  the callback, usbd_urb_status gives the 
0x2000010 status and zero bytes as the transfer length. 

What does the error mean? Where is there not enough memory? and most importantly, how can it be overcome. 

Thanks,