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Date: Wed, 26 Sep 2018 14:27:45 +0300
From: Mike Rapoport <rppt@linux.vnet.ibm.com>
Subject: [PATCH] csky: fixups after bootmem removal
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Message-Id: <20180926112744.GC4628@rapoport-lnx>
Sender: owner-linux-mm@kvack.org
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>, Guo Ren <ren_guo@c-sky.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org

Hi,

The below patch fixes the bootmem leftovers in csky. It is based on the
current mmots and csky build there fails because of undefined reference to
dma_direct_ops:

  MODPOST vmlinux.o
kernel/dma/mapping.o: In function `dmam_alloc_attrs':
kernel/dma/mapping.c:143: undefined reference to `dma_direct_ops'
kernel/dma/mapping.o: In function `dmam_declare_coherent_memory':
kernel/dma/mapping.c:184: undefined reference to `dma_direct_ops'
mm/dmapool.o: In function `dma_free_attrs': 
include/linux/dma-mapping.h:558: undefined reference to `dma_direct_ops'

I've blindly added "select DMA_DIRECT_OPS" to arch/csky/Kconfig and it
fixed the build, but I really have no idea if this the right thing to do...