linux-kernel - Re: [GIT PULL] CMA and ARM DMA-mapping updates for v3.5

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Message-ID: <20120529122932.GA24623@n2100.arm.linux.org.uk>
Date:	Tue, 29 May 2012 13:29:32 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Arnd Bergmann <arnd@...db.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linaro-mm-sig@...ts.linaro.org,
	Michal Nazarewicz <mina86@...a86.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [GIT PULL] CMA and ARM DMA-mapping updates for v3.5

I notice we have new warnings as a result of CMA being merged, though
thankfully they're just in Kconfig:

warning: (ARM) selects CMA which has unmet direct dependencies (HAVE_DMA_CONTIGUOUS && HAVE_MEMBLOCK && EXPERIMENTAL)

This seems totally weird: you're mandating that ARM must have CMA
selected, but it's an experimental feature?  So you're implying that
the entire ARM kernel becomes totally experimental for the next
release cycle?

I think this needs fixing.
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