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    MIPS: bmips: mark exception vectors as char arrays · 39637aaf
    Jonas Gorski 提交于
    [ Upstream commit e4f5cb1a9b27c0f94ef4f5a0178a3fde2d3d0e9e ]
    
    The vectors span more than one byte, so mark them as arrays.
    
    Fixes the following build error when building when using GCC 8.3:
    
    In file included from ./include/linux/string.h:19,
                     from ./include/linux/bitmap.h:9,
                     from ./include/linux/cpumask.h:12,
                     from ./arch/mips/include/asm/processor.h:15,
                     from ./arch/mips/include/asm/thread_info.h:16,
                     from ./include/linux/thread_info.h:38,
                     from ./include/asm-generic/preempt.h:5,
                     from ./arch/mips/include/generated/asm/preempt.h:1,
                     from ./include/linux/preempt.h:81,
                     from ./include/linux/spinlock.h:51,
                     from ./include/linux/mmzone.h:8,
                     from ./include/linux/bootmem.h:8,
                     from arch/mips/bcm63xx/prom.c:10:
    arch/mips/bcm63xx/prom.c: In function 'prom_init':
    ./arch/mips/include/asm/string.h:162:11: error: '__builtin_memcpy' forming offset [2, 32] is out of the bounds [0, 1] of object 'bmips_smp_movevec' with type 'char' [-Werror=array-bounds]
       __ret = __builtin_memcpy((dst), (src), __len); \
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    arch/mips/bcm63xx/prom.c:97:3: note: in expansion of macro 'memcpy'
       memcpy((void *)0xa0000200, &bmips_smp_movevec, 0x20);
       ^~~~~~
    In file included from arch/mips/bcm63xx/prom.c:14:
    ./arch/mips/include/asm/bmips.h:80:13: note: 'bmips_smp_movevec' declared here
     extern char bmips_smp_movevec;
    
    Fixes: 18a1eef9 ("MIPS: BMIPS: Introduce bmips.h")
    Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
    Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
    Signed-off-by: NPaul Burton <paulburton@kernel.org>
    Cc: linux-mips@vger.kernel.org
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: James Hogan <jhogan@kernel.org>
    Signed-off-by: NSasha Levin <sashal@kernel.org>
    39637aaf
bmips.h 3.0 KB