Hi Arnd,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.15-rc7 next-20180112]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Arnd-Bergmann/microblaze-fix-endian-handling/20180105-120705
config: microblaze-mmu_defconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 7.2.0
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
        make.cross ARCH=microblaze 

All errors (new ones prefixed by >>):

>> arch/microblaze/lib/fastcopy.S:33:2: error: #error Microblaze LE not support ASM optimized lib func. Disable OPT_LIB_ASM.
    #error Microblaze LE not support ASM optimized lib func. Disable OPT_LIB_ASM.
     ^~~~~

vim +33 arch/microblaze/lib/fastcopy.S

de93c3c1 Michal Simek 2011-01-28 @33  #error Microblaze LE not support ASM optimized lib func. Disable OPT_LIB_ASM.
de93c3c1 Michal Simek 2011-01-28  34  #endif
de93c3c1 Michal Simek 2011-01-28  35  

:::::: The code at line 33 was first introduced by commit
:::::: de93c3c119382cb888ca8a94b642dbcf8035525e microblaze: Fix ASM optimized code for LE

:::::: TO: Michal Simek <monstr@monstr.eu>
:::::: CC: Michal Simek <monstr@monstr.eu>

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