• Joel Stanley's avatar
    lib/xz: Put CRC32_POLY_LE in xz_private.h · 242cdad8
    Joel Stanley authored
    This fixes a regression introduced by faa16bc4 ("lib: Use
    existing define with polynomial").
    
    The cleanup added a dependency on include/linux, which broke the PowerPC
    boot wrapper/decompresser when KERNEL_XZ is enabled:
    
      BOOTCC  arch/powerpc/boot/decompress.o
     In file included from arch/powerpc/boot/../../../lib/decompress_unxz.c:233,
                     from arch/powerpc/boot/decompress.c:42:
     arch/powerpc/boot/../../../lib/xz/xz_crc32.c:18:10: fatal error:
     linux/crc32poly.h: No such file or directory
      #include <linux/crc32poly.h>
               ^~~~~~~~~~~~~~~~~~~
    
    The powerpc decompresser is a hairy corner of the kernel. Even while building
    a 64-bit kernel it needs to build a 32-bit binary and therefore avoid including
    files from include/linux.
    
    This allows users of the xz library to avoid including headers from
    'include/linux/' while still achieving the cleanup of the magic number.
    
    Fixes: faa16bc4 ("lib: Use existing define with polynomial")
    Reported-by: Meelis Roos's avatarMeelis Roos <mroos@linux.ee>
    Reported-by: default avatarkbuild test robot <lkp@intel.com>
    Suggested-by: default avatarChristophe LEROY <christophe.leroy@c-s.fr>
    Signed-off-by: Joel Stanley's avatarJoel Stanley <joel@jms.id.au>
    Tested-by: Meelis Roos's avatarMeelis Roos <mroos@linux.ee>
    Signed-off-by: Michael Ellerman's avatarMichael Ellerman <mpe@ellerman.id.au>
    242cdad8
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