arm: dma-mapping: add checking cma area initialized

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If CMA is turned on and CMA size is set to zero, kernel should
behave as if CMA was not enabled at compile time.
Every dma allocation should check existence of cma area
before requesting memory.

Signed-off-by: Gioh Kim <gioh.kim@lge.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
[mszyprow: removed redundant empty line from the patch]
Signed-off-by: <m.szyprowski@samsung.com>

...

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Gioh Kim 2014-05-22 13:38:23 +09:00 • committed by Marek Szyprowski

parent 006f841db1

commit e464ef16c4

1 changed files with 3 additions and 3 deletions

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arch/arm/mm/dma-mapping.c

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