[PATCH v2] arm: make FORCE_MAX_ZONEORDER configurable for TI AM33XX

Russell King - ARM Linux linux at arm.linux.org.uk
Tue Sep 25 04:32:45 EDT 2012

On Tue, Sep 25, 2012 at 10:26:30AM +0200, yegorslists at googlemail.com wrote:
> From: Yegor Yefremov <yegorslists at googlemail.com>
> FORCE_MAX_ZONEORDER of 12 is needed to allocation more than 4MB
> of consistent DMA memory (da8xx frame buffer driver).

Okay, so the patch description says "This needs to be 12 on this platform".

> -	int "Maximum zone order" if ARCH_SHMOBILE
> -	range 11 64 if ARCH_SHMOBILE
> +	int "Maximum zone order" if ARCH_SHMOBILE || SOC_AM33XX
> +	range 11 64 if ARCH_SHMOBILE || SOC_AM33XX

but you leave it up to the user to select something that may not be
suitable.  Wouldn't _just_ adding:

	default "12" if SOC_AM33XX

after the "range", and making no other changes be good enough and match
what the patch description says?

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