[PATCH] arm64: dma-mapping: check whether cma area is initialized or not

[Catalin Marinas]

On Fri, Sep 11, 2015 at 03:49:47PM +0800, Jisheng Zhang wrote:
> 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.
> 
> Arm has done this by commit e464ef16c4f0 ("arm: dma-mapping: add
> checking cma area initialized"), also do this for arm64.
> 
> Signed-off-by: Jisheng Zhang <jszhang at marvell.com>

Acked-by: Catalin Marinas <catalin.marinas at arm.com>

Will should pick this up for 4.3.

Thanks.

-- 
Catalin