[mcgrof:blk-iobuf-pool-v5-premap-iova 13/14] drivers/nvme/host/ioctl.c:136:14: error: call to undeclared function 'io_uring_cmd_kbuf_priv'; ISO C99 and later do not support implicit function declarations

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git blk-iobuf-pool-v5-premap-iova
head:   912328a605c4767433d483436a2d592d06063095
commit: 77b944e2c92e23c377117a624ac22fa2d37fe877 [13/14] nvme: issue premapped commands past the dma_opt clamp
config: hexagon-randconfig-r113-20260816 (https://download.01.org/0day-ci/archive/20260817/202608170020.N3auIDXR-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 844a18e753e822736c9805ab779144b647a2c186)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260817/202608170020.N3auIDXR-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/202608170020.N3auIDXR-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/nvme/host/ioctl.c:136:14: error: call to undeclared function 'io_uring_cmd_kbuf_priv'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     136 |         kbuf_priv = io_uring_cmd_kbuf_priv(ioucmd, issue_flags);
         |                     ^
>> drivers/nvme/host/ioctl.c:136:12: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
     136 |         kbuf_priv = io_uring_cmd_kbuf_priv(ioucmd, issue_flags);
         |                   ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   2 errors generated.


vim +/io_uring_cmd_kbuf_priv +136 drivers/nvme/host/ioctl.c

   125	
   126	static void nvme_setup_premapped(struct request *req, struct nvme_ns *ns,
   127					 struct io_uring_cmd *ioucmd,
   128					 unsigned int issue_flags)
   129	{
   130	#ifdef CONFIG_BLK_IOBUF_POOL
   131		struct blk_dma_premap *premap;
   132		void *kbuf_priv;
   133	
   134		if (!ioucmd)
   135			return;
 > 136		kbuf_priv = io_uring_cmd_kbuf_priv(ioucmd, issue_flags);
   137		if (!kbuf_priv)
   138			return;
   139		premap = blk_iobuf_fixed_buf_premap(kbuf_priv, ns->ctrl->dev);
   140		if (!premap)
   141			return;
   142		/*
   143		 * The buffer is persistently mapped to our DMA device. Record the
   144		 * retained mapping BEFORE the buffer is mapped into the request, so
   145		 * blk_rq_map_user_bvec sizes the gate on max_hw_premapped_sectors rather
   146		 * than the 128K dma_opt clamp; req->dma_premap on the request is the sole
   147		 * marker of a premapped request from here on.
   148		 */
   149		req->dma_premap = premap;
   150	#endif
   151	}
   152	

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