tree 41a760a81a8b77ac332e3cf13d7891d3215727d3
parent a0112f487180bd243aec86b5a8c4b5e2d45e8404
author Matthijs Kooijman <matthijs@stdin.nl> 1374226463 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1374616778 -0700

staging: dwc2: when dma is disabled, clear hcd->self.uses_dma

When dma is disabled inside dwc2 (because the hardware does not support
it, or the code was changed to disable it for testing), let the usb core
know about this by clearing hcd->self.uses_dma.

By default, the usb core assumes that dma is used when a dma_mask is
set, but this might not always match the dma_enable value in dwc2. To
prevent problems resulting from a mismatch, better to explicitely
disable dma in this case (though everything seemed to work with the
wrong value of uses_dma as well, probably only resulted in some unneeded
work).

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Acked-by: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>