m68k: make __pfn_to_phys() and __phys_to_pfn() available for !MMU
Recent changes that obsoleted DISCONTIGMEM on m68k switched the MMU variant to use generic definitions of __pfn_to_phys() and __phys_to_pfn(), but missed the !MMU variant which caused a build failure: drivers/media/common/videobuf2/videobuf2-dma-contig.c: In function 'vb2_dc_get_userptr': drivers/media/common/videobuf2/videobuf2-dma-contig.c:509:5: error: implicit declaration of function '__pfn_to_phys' [-Werror=implicit-function-declaration] 509 | __pfn_to_phys(nums[0]), size, buf->dma_dir, 0); | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors Enable __pfn_to_phys() and __phys_to_pfn() on !MMU builds. Link: https://lkml.kernel.org/r/20210211232202.GS299309@linux.ibm.com Fixes: 4bfc848e ("m68k/mm: enable use of generic memory_model.h for !DISCONTIGMEM") Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reported-by: kernel test robot <lkp@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greg Ungerer <gerg@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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