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    ARM: warnings in arch/arm/include/asm/uaccess.h · 8e7fc18b
    Arnd Bergmann 提交于
    On NOMMU ARM, the __addr_ok() and __range_ok() macros do not evaluate
    their arguments, which may lead to harmless build warnings in some
    code where the variables are not used otherwise. Adding a cast to void
    gets rid of the warning and does not make any semantic changes.
    
    Without this patch, building at91x40_defconfig results in:
    
    fs/read_write.c: In function 'rw_copy_check_uvector':
    fs/read_write.c:684:9: warning: unused variable 'buf' [-Wunused-variable]
    Signed-off-by: NArnd Bergmann <arnd@arndb.de>
    Acked-by: NGreg Ungerer <gerg@uclinux.org>
    Cc: Russell King <rmk+kernel@arm.linux.org.uk>
    8e7fc18b
uaccess.h 13.0 KB