Arnd Bergmann wrote:
On Tuesday 16 June 2009, Scott Wood wrote:
Chris Pringle wrote:
Ah right - that would explain what we're seeing then... Doh. Thought I
might have been onto something then. Is there any way to force a cache
flush? That'd at least prove it was a caching issue if it resolved the
problem.
You could enable CONFIG_NOT_COHERENT_CACHE.
If the whole system is noncoherent, that is the right solution.
I meant it more as a test than a permanent solution...
If the
device is the only one, you can also use dma_alloc_noncoherent() and
flush explicitly with dma_cache_sync().
I don't see how that would help -- aren't those also controlled by
CONFIG_NOT_COHERENT_CACHE?
-Scott
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