USB mass storage and ARM cache coherency

Oliver Neukum oliver at neukum.org
Thu Feb 18 01:56:14 EST 2010


Am Mittwoch, 17. Februar 2010 21:30:24 schrieb Gadiyar, Anand:
> > Why do you skip mapping the setup packet but not the data packet?
> > 
> 
> I think that's oversight. For this controller, we need to skip mapping
> all buffers used to do transfers on EP0, which is all control transfers.

One thing more. Do you have an issue with EP 0 only or all control
endpoints? EP 0 must be control, but devices are within spec if they
have multiple control endpoints provided EP 0 is control.

	Regards
		Oliver



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