On Wednesday 27 December 2017 12:15 AM, Trent Piepho wrote:

On Sun, 2017-12-24 at 05:36 +0100, Cyrille Pitchen wrote:

quoted

this series tries to solve a long time issue of compatibility between the
MTD and SPI sub-systems about whether we should use DMA-safe memory.

Can this should replace SoC specific fixes like:

c687c46e9e45
spi: spi-ti-qspi: Use bounce buffer if read buffer is not DMA'ble

Yes, I plan to revert this patch once m25p80 starts using bounce buffers.

I am interested in knowing which other SPI clients end up passing non
DMA'able buffers. AFAIK, its UBIFS and JFFS2. Most other SPI devices on
TI boards that I have dealt with like Touch, Sensors (IIO), GPIO
expanders etc all provide DMA'able buffers.


-- 
Regards
Vignesh