[isilence:dmabuf-rw-v1-test 10/16] drivers/nvme/host/pci.c:661:4: error: call to undeclared function '__dma_sync_single_for_cpu'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/isilence/linux dmabuf-rw-v1-test
head:   949fb10351aae03bf6ca32fb3c4a714ebaefc9e9
commit: f968cc15459963b2511327450d713bef7ea9e0d3 [10/16] nvme-pci: implement support for user passed dma vec
config: i386-buildonly-randconfig-005-20250627 (https://download.01.org/0day-ci/archive/20250628/202506280133.m6Dijaql-lkp@intel.com/config)
compiler: clang version 20.1.7 (https://github.com/llvm/llvm-project 6146a88f60492b520a36f8f8f3231e15f3cc6082)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250628/202506280133.m6Dijaql-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506280133.m6Dijaql-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/nvme/host/pci.c:661:4: error: call to undeclared function '__dma_sync_single_for_cpu'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     661 |                         __dma_sync_single_for_cpu(dev, dma_addr, dma_len, dir);
         |                         ^
   drivers/nvme/host/pci.c:661:4: note: did you mean 'dma_sync_single_for_cpu'?
   include/linux/dma-mapping.h:415:20: note: 'dma_sync_single_for_cpu' declared here
     415 | static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
         |                    ^
>> drivers/nvme/host/pci.c:663:4: error: call to undeclared function '__dma_sync_single_for_device'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     663 |                         __dma_sync_single_for_device(dev, dma_addr,
         |                         ^
   drivers/nvme/host/pci.c:663:4: note: did you mean 'dma_sync_single_for_device'?
   include/linux/dma-mapping.h:419:20: note: 'dma_sync_single_for_device' declared here
     419 | static inline void dma_sync_single_for_device(struct device *dev,
         |                    ^
   drivers/nvme/host/pci.c:3424:41: warning: shift count >= width of type [-Wshift-count-overflow]
    3424 |                 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
         |                                                       ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:73:54: note: expanded from macro 'DMA_BIT_MASK'
      73 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
         |                                                      ^ ~~~
   1 warning and 2 errors generated.


vim +/__dma_sync_single_for_cpu +661 drivers/nvme/host/pci.c

   639	
   640	static void nvme_sync_dma(struct nvme_dev *nvme_dev, struct request *req,
   641				  enum dma_data_direction dir)
   642	{
   643		bool for_cpu = dir == DMA_FROM_DEVICE;
   644		struct device *dev = nvme_dev->dev;
   645		struct bio *bio = req->bio;
   646		int offset, length;
   647		struct dmavec *dmav;
   648	
   649		if (!dma_dev_need_sync(dev))
   650			return;
   651	
   652		offset = bio->bi_iter.bi_bvec_done;
   653		length = blk_rq_payload_bytes(req);
   654		dmav = &bio->bi_dmavec[bio->bi_iter.bi_idx];
   655	
   656		while (length) {
   657			u64 dma_addr = dmav->addr + offset;
   658			int dma_len = min(dmav->len - offset, length);
   659	
   660			if (for_cpu)
 > 661				__dma_sync_single_for_cpu(dev, dma_addr, dma_len, dir);
   662			else
 > 663				__dma_sync_single_for_device(dev, dma_addr,
   664							     dma_len, dir);
   665	
   666			length -= dma_len;
   667		}
   668	}
   669	

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