linux-kernel - [sbates130272-p2pmem:p2pdma_user_cmb_v8 5/21] kernel/dma/direct.c:467:21: error: implicit declaration of function 'sg_is_dma_bus_address'; did you mean 'sg_dma

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Date:   Thu, 7 Jul 2022 11:44:11 +0800
From:   kernel test robot <lkp@...el.com>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: [sbates130272-p2pmem:p2pdma_user_cmb_v8 5/21]
 kernel/dma/direct.c:467:21: error: implicit declaration of function
 'sg_is_dma_bus_address'; did you mean 'sg_dma_address'?

tree:   https://github.com/sbates130272/linux-p2pmem.git p2pdma_user_cmb_v8
head:   a2dd359c3f1baca6c0438adec8900b7fe57f92af
commit: 8d3e7a5dd204152609cd4eee448224f071493784 [5/21] dma-direct: support PCI P2PDMA pages in dma-direct map_sg
config: xtensa-randconfig-r015-20220706 (https://download.01.org/0day-ci/archive/20220707/202207070932.TlwOuRSB-lkp@intel.com/config)
compiler: xtensa-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/sbates130272/linux-p2pmem/commit/8d3e7a5dd204152609cd4eee448224f071493784
        git remote add sbates130272-p2pmem https://github.com/sbates130272/linux-p2pmem.git
        git fetch --no-tags sbates130272-p2pmem p2pdma_user_cmb_v8
        git checkout 8d3e7a5dd204152609cd4eee448224f071493784
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=xtensa SHELL=/bin/bash drivers/iommu/ kernel/dma/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   kernel/dma/direct.c: In function 'dma_direct_unmap_sg':
>> kernel/dma/direct.c:467:21: error: implicit declaration of function 'sg_is_dma_bus_address'; did you mean 'sg_dma_address'? [-Werror=implicit-function-declaration]
     467 |                 if (sg_is_dma_bus_address(sg))
         |                     ^~~~~~~~~~~~~~~~~~~~~
         |                     sg_dma_address
>> kernel/dma/direct.c:468:25: error: implicit declaration of function 'sg_dma_unmark_bus_address' [-Werror=implicit-function-declaration]
     468 |                         sg_dma_unmark_bus_address(sg);
         |                         ^~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +467 kernel/dma/direct.c

   455	
   456	/*
   457	 * Unmaps segments, except for ones marked as pci_p2pdma which do not
   458	 * require any further action as they contain a bus address.
   459	 */
   460	void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl,
   461			int nents, enum dma_data_direction dir, unsigned long attrs)
   462	{
   463		struct scatterlist *sg;
   464		int i;
   465	
   466		for_each_sg(sgl,  sg, nents, i) {
 > 467			if (sg_is_dma_bus_address(sg))
 > 468				sg_dma_unmark_bus_address(sg);
   469			else
   470				dma_direct_unmap_page(dev, sg->dma_address,
   471						      sg_dma_len(sg), dir, attrs);
   472		}
   473	}
   474	#endif
   475	

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