• Guenter Roeck's avatar
    hexagon: Fix build failures in linux-next · cb84c2b4
    Guenter Roeck authored
    hexagon:defconfig fails to build in linux-next since commit 332fd7c4
    ("genirq: Generic chip: Change irq_reg_{readl,writel} arguments").
    
    The primary build failure is
    
    arch/hexagon/include/asm/cacheflush.h: In function 'copy_to_user_page':
    arch/hexagon/include/asm/cacheflush.h:89:22: error: 'VM_EXEC' undeclared
    
    This is the result of including of <linux/io.h> from <linux/irq.h>,
    which is now necessary due to the use of readl and writel from irq.h.
    This causes recursive inclusions in hexagon code; cacheflush.h is included
    from mm.h prior to the definition of VM_EXEC.
    
    Fix the problem by moving copy_to_user_page from the hexagon include file to
    arch/hexagon/mm/cache.c, similar to other architectures. After this change,
    several redefinitions of readl and writel are reported. Those are caused
    by recursive inclusions of io.h and asm/cacheflush.h. Fix those problems by
    reducing the number of files included from those files. Also, it was necessary
    to stop including asm-generic/cacheflush.h from asm/cacheflush.h. Instead,
    functionality originally provided by asm-generic/cacheflush.h is now coded
    in asm/cacheflush.h directly.
    
    Cc: Kevin Cernekee <cernekee@gmail.com>
    Cc: Jason Cooper <jason@lakedaemon.net>
    Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
    signed-off-by: default avatarRichard Kuo <rkuo@codeaurora.org>
    cb84c2b4
io.h 6.98 KB