15 Nov
2017
15 Nov
'17
5:18 p.m.
Marek Vasut wrote:
Why don't you just fix the cache operations in the driver ?
This driver is copying CPU only. There are no cache operations involved! Vignesh added the bounce buffer obviously to fix alignment issues on his platform.
This bounce-buffer for only CPU operations is just wasting CPU cycles and degrades performance and I just cannot find a good reason for it.
I only thought using the bounce buffer here would be better than to add memcpy/memmove for alignment reasons in the driver (in terms of possible code duplication).
I can of course implement this in a different way.
Simon