16 Jan
2019
16 Jan
'19
4:06 p.m.
On Wed, Jan 16, 2019 at 07:28:13AM +0000, Koenig, Christian wrote:
To summarize once more: We have an array of struct pages and want to coherently map that to a device.
And the answer to that is very simple: you can't. What is so hard to understand about? If you want to map arbitrary memory it simply can't be done in a coherent way on about half of our platforms.
If that is not possible because of whatever reason we want to get an error code or even not load the driver from the beginning.
That is a bullshit attitude. Just like everyone else makes their drivers work you should not be lazy.
bool dma_streaming_is_coherent(const struct device *)
API to help us decide when to load or not.
Yes, please.
Hell no.