• Paul Gortmaker's avatar
    sparc: fix build fail in mm/init_64.c when NEED_MULTIPLE_NODES is off · aa6f0790
    Paul Gortmaker authored
    Commit 625d693e (linux-next)
    
        "sparc64: Convert over to NO_BOOTMEM."
    
    causes the following compile failure for sparc64 allnoconfig:
    
      arch/sparc/mm/init_64.c:822:16: error: unused variable 'paddr'
      arch/sparc/mm/init_64.c:1759:7: error: unused variable 'node'
      arch/sparc/mm/init_64.c:809:12: error: 'memblock_nid_range' defined but not used
    
    The paddr decl can easily be shuffled within the ifdef.  The
    memblock_nid_range is just a stub function for when NEED_MULTIPLE_NODES
    is off, but the only caller is within a NEED_MULTIPLE_NODES enabled
    section, so we can simply delete it.
    
    The unused "node" is slightly more interesting.  In the case of
    "# CONFIG_NEED_MULTIPLE_NODES is not set" we no longer get the
    definition of:
    
     #define NODE_DATA(nid)          (node_data[nid])
    
    from arch/sparc/include/asm/mmzone.h - but instead we get:
    
     #define NODE_DATA(nid)          (&contig_page_data)
    
    from include/linux/mmzone.h -- and since the arg is ignored,
    the thing really is unused.  Rather than put in a confusing
    looking __maybe_unused, simply splitting the declaration
    from the assignment seemed to me to be the least offensive.
    
    Cc: Sam Ravnborg <sam@ravnborg.org>
    Cc: "David S. Miller" <davem@davemloft.net>
    Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    aa6f0790
init_64.c 56.6 KB