On Tue, Dec 26, 2017 at 06:45:28PM +0000, Trent Piepho wrote: > Or, since this only fixes instances of DMA-unsafe buffers used in > access to SPI NOR flash chips, and since there are other SPI master > interface users, those chip specific fixes in some/all spi master > drivers are still needed to fix transfers not originated via spi-nor?
SPI client drivers are *supposed* to use DMA safe memory already. How often that happens in cases where it matters is a separate question, we definitely have users with smaller transfers that don't do the right thing but they're normally done using PIO anyway.
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