Hi Dmitry,

I love your patch! Yet something to improve:

[auto build test ERROR on block/for-next]
[also build test ERROR on tegra/for-next linus/master v5.6-rc3 next-20200226]
[cannot apply to ulf.hansson-mmc/next]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Dmitry-Osipenko/Introduce-NVIDIA-Tegra-Partition-Table/20200225-072610
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: m68k-randconfig-a001-20200227 (attached as .config)
compiler: m68k-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=m68k 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <redacted>

All errors (new ones prefixed by >>):

   drivers/mmc/host/wbsd.c: In function 'wbsd_request_end':
   drivers/mmc/host/wbsd.c:210:14: error: implicit declaration of function 'claim_dma_lock'; did you mean 'can_do_mlock'? [-Werror=implicit-function-declaration]
      dmaflags = claim_dma_lock();
                 ^~~~~~~~~~~~~~
                 can_do_mlock

quoted

drivers/mmc/host/wbsd.c:213:3: error: implicit declaration of function 'release_dma_lock'; did you mean 'release_pages'? [-Werror=implicit-function-declaration]

      release_dma_lock(dmaflags);
      ^~~~~~~~~~~~~~~~
      release_pages
   cc1: some warnings being treated as errors

vim +213 drivers/mmc/host/wbsd.c

^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  201  
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  202  static void wbsd_request_end(struct wbsd_host *host, struct mmc_request *mrq)
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  203  {
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  204  	unsigned long dmaflags;
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  205  
cfa7f52164d6cd drivers/mmc/wbsd.c Pierre Ossman  2006-01-08  206  	if (host->dma >= 0) {
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  207  		/*
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  208  		 * Release ISA DMA controller.
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  209  		 */
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 @210  		dmaflags = claim_dma_lock();
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  211  		disable_dma(host->dma);
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  212  		clear_dma_ff(host->dma);
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 @213  		release_dma_lock(dmaflags);
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  214  
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  215  		/*
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  216  		 * Disable DMA on host.
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  217  		 */
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  218  		wbsd_write_index(host, WBSD_IDX_DMA, 0);
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  219  	}
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  220  
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  221  	host->mrq = NULL;
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  222  
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  223  	/*
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  224  	 * MMC layer might call back into the driver so first unlock.
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  225  	 */
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  226  	spin_unlock(&host->lock);
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  227  	mmc_request_done(host->mmc, mrq);
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  228  	spin_lock(&host->lock);
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  229  }
^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16  230  

:::::: The code at line 213 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds [off-list ref]
:::::: CC: Linus Torvalds [off-list ref]

---
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