atmel_nand, DMA, and "Fall back to CPU I/O"

[Artem Bityutskiy]

On Wed, 2012-04-25 at 15:09 -0700, George Pontis wrote:
> Working with 3.0.13 kernel and the at91sam9g45, 8b NAND flash with rootfs in
> NAND
> 
> At boot, the kernel shows 22 DMA warnings, then another 260 as UBIFS mounts
> the root FS:
> 
> atmel_nand atmel_nand: Fall back to CPU I/O
> 

Unfortunately UBI and UBIFS use vmalloced memory for I/O and many people
yelled but no one cared to fix this. I think we should make UBI/UBIFS to
use kmalloc()'ed memory instead.


-- 
Best Regards,
Artem Bityutskiy
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