linux-kernel - Re: [PATCH 4/4] mtd: provide helper to prepare buffers for DMA operations

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Date:	Fri, 1 Apr 2016 11:13:43 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	kbuild-all@...org, David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-mtd@...ts.infradead.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Gordon <david.s.gordon@...el.com>,
	Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	dmaengine@...r.kernel.org,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	linux-media@...r.kernel.org,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Richard Weinberger <richard@....at>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	linux-crypto@...r.kernel.org, Vignesh R <vigneshr@...com>,
	linux-mm@...ck.org, Joerg Roedel <joro@...tes.org>,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] mtd: provide helper to prepare buffers for DMA
 operations

Hi Boris,

[auto build test ERROR on spi/for-next]
[also build test ERROR on v4.6-rc1 next-20160331]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Boris-Brezillon/scatterlist-sg_table-from-virtual-pointer/20160331-203118
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi for-next
config: m32r-m32104ut_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=m32r 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/mtd/super.h:17:0,
                    from fs/romfs/storage.c:13:
>> include/linux/mtd/mtd.h:426:10: error: expected ';', ',' or ')' before 'enum'
             enum dma_data_direction dir)
             ^
   include/linux/mtd/mtd.h: In function 'mtd_unmap_buf':
>> include/linux/mtd/mtd.h:434:2: warning: 'return' with a value, in function returning void
     return -ENOTSUPP;
     ^
   fs/romfs/storage.c: At top level:
   include/linux/mtd/mtd.h:431:13: warning: 'mtd_unmap_buf' defined but not used [-Wunused-function]
    static void mtd_unmap_buf(struct mtd_info *mtd, struct device *dev,
                ^
--
   In file included from include/linux/mtd/super.h:17:0,
                    from fs/romfs/super.c:72:
>> include/linux/mtd/mtd.h:426:10: error: expected ';', ',' or ')' before 'enum'
             enum dma_data_direction dir)
             ^
   include/linux/mtd/mtd.h: In function 'mtd_unmap_buf':
>> include/linux/mtd/mtd.h:434:2: warning: 'return' with a value, in function returning void
     return -ENOTSUPP;
     ^
   fs/romfs/super.c: At top level:
   include/linux/mtd/mtd.h:431:13: warning: 'mtd_unmap_buf' defined but not used [-Wunused-function]
    static void mtd_unmap_buf(struct mtd_info *mtd, struct device *dev,
                ^

vim +426 include/linux/mtd/mtd.h

   420			   struct sg_table *sgt, enum dma_data_direction dir);
   421	#else
   422	static inline int mtd_map_buf(struct mtd_info *mtd, struct device *dev,
   423				      struct sg_table *sgt, const void *buf,
   424				      size_t len,
   425				      const struct sg_constraints *constraints
 > 426				      enum dma_data_direction dir)
   427	{
   428		return -ENOTSUPP;
   429	}
   430	
   431	static void mtd_unmap_buf(struct mtd_info *mtd, struct device *dev,
   432				  struct sg_table *sgt, enum dma_data_direction dir)
   433	{
 > 434		return -ENOTSUPP;
   435	}
   436	#endif
   437	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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