Hi,
I have a question related to the consistent memory in the USB OHCI driver.
Maybe the question is already answer on the mailing list archive, but I did not find
where.
I notice that sometime the buffer give to the TD is not allocated in consistent memory.
Ex: in the usb.c: usb_control_msg(), kalloc is called using the GFP_KERNEL only.
This buffer is fillup with the request.
After the buffer is given to the appropriate TD in order to start the transfer.
My question is, why this buffer is not in consistent memory?
Is it because it is a SETUP or an OUT message?
If yes, That mean only inbound messages need buffer in consistent memory?
Am I right??
Anwsering that question will help me exposing my real problem.
Thanks
Etienne
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