[frank-w-bpi-r2-4.14:5.16-r2pro 50/53] arch/ia64/include/asm/mmu_context.h:127:48: error: variable 'old_rr4' set but not used

[frank-w-bpi-r2-4.14:5.16-r2pro 50/53] arch/ia64/include/asm/mmu_context.h:127:48: error: variable 'old_rr4' set but not used

[kernel test robot]

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tree:   https://github.com/frank-w/BPI-R2-4.14 5.16-r2pro
head:   4136e3e8621834efaac799c13c8ea99f21fa2add
commit: 9e69038811fbd1a4c478ccda3817426a3f4af504 [50/53] rtl8367: add phy-driver from vendor
config: ia64-buildonly-randconfig-r002-20211229 (https://download.01.org/0day-ci/archive/20211229/202112290954.agHXxjC4-lkp(a)intel.com/config)
compiler: ia64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/frank-w/BPI-R2-4.14/commit/9e69038811fbd1a4c478ccda3817426a3f4af504
        git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14
        git fetch --no-tags frank-w-bpi-r2-4.14 5.16-r2pro
        git checkout 9e69038811fbd1a4c478ccda3817426a3f4af504
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/net/phy/rtk/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   cc1: error: drivers/net/phy/rtk/rtl8367c/include: No such file or directory [-Werror=missing-include-dirs]
   cc1: error: include/linux/: No such file or directory [-Werror=missing-include-dirs]
   In file included from arch/ia64/include/asm/pgtable.h:153,
                    from include/linux/pgtable.h:6,
                    from arch/ia64/include/asm/uaccess.h:40,
                    from include/linux/uaccess.h:11,
                    from include/linux/sched/task.h:11,
                    from include/linux/sched/signal.h:9,
                    from include/linux/rcuwait.h:6,
                    from include/linux/percpu-rwsem.h:7,
                    from include/linux/fs.h:33,
                    from include/linux/compat.h:17,
                    from include/linux/ethtool.h:17,
                    from include/linux/phy.h:16,
                    from include/linux/of_mdio.h:12,
                    from drivers/net/phy/rtk/rtl8367rb_mdio.c:19:
   arch/ia64/include/asm/mmu_context.h: In function 'reload_context':
>> arch/ia64/include/asm/mmu_context.h:127:48: error: variable 'old_rr4' set but not used [-Werror=unused-but-set-variable]
     127 |         unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4;
         |                                                ^~~~~~~
   In file included from drivers/net/phy/rtk/rtl8367rb_mdio.c:24:
   drivers/net/phy/rtk/./rtl8367c/include/rtk_switch.h: At top level:
   drivers/net/phy/rtk/./rtl8367c/include/rtk_switch.h:21:10: fatal error: rtk_types.h: No such file or directory
      21 | #include <rtk_types.h>
         |          ^~~~~~~~~~~~~
   cc1: all warnings being treated as errors
   compilation terminated.


vim +/old_rr4 +127 arch/ia64/include/asm/mmu_context.h

^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  121  
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  122  static inline void
badea125d7cbd93 include/asm-ia64/mmu_context.h David Mosberger-Tang 2005-07-25  123  reload_context (nv_mm_context_t context)
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  124  {
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  125  	unsigned long rid;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  126  	unsigned long rid_incr = 0;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16 @127  	unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  128  
0a41e2501160587 include/asm-ia64/mmu_context.h Peter Chubb          2005-08-16  129  	old_rr4 = ia64_get_rr(RGN_BASE(RGN_HPAGE));
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  130  	rid = context << 3;	/* make space for encoding the region number */
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  131  	rid_incr = 1 << 8;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  132  
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  133  	/* encode the region id, preferred page size, and VHPT enable bit: */
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  134  	rr0 = (rid << 8) | (PAGE_SHIFT << 2) | 1;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  135  	rr1 = rr0 + 1*rid_incr;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  136  	rr2 = rr0 + 2*rid_incr;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  137  	rr3 = rr0 + 3*rid_incr;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  138  	rr4 = rr0 + 4*rid_incr;
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  139  #ifdef  CONFIG_HUGETLB_PAGE
^1da177e4c3f415 include/asm-ia64/mmu_context.h Linus Torvalds       2005-04-16  140  	rr4 = (rr4 & (~(0xfcUL))) | (old_rr4 & 0xfc);
0a41e2501160587 include/asm-ia64/mmu_context.h Peter Chubb          2005-08-16  141  

:::::: The code@line 127 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
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