24 Jun
2014
24 Jun
'14
10:33 a.m.
On 06/24/2014 07:02 PM, Russell King - ARM Linux wrote:
On Tue, Jun 24, 2014 at 06:54:26PM +0900, Alexandre Courbot wrote:
From: Lucas Stach dev@lynxeye.de
On architectures for which access to GPU memory is non-coherent, caches need to be flushed and invalidated explicitly at the appropriate places. Introduce two small helpers to make things easy for TTM-based drivers.
Have you run this with DMA API debugging enabled? I suspect you haven't, and I recommend that you do.
# cat /sys/kernel/debug/dma-api/error_count 162621
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