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    powerpc: io: implement dummy relaxed accessor macros for writes · 5da59057
    Will Deacon authored
    
    
    write{b,w,l,q}_relaxed are implemented by some architectures in order to
    permit memory-mapped I/O accesses with weaker barrier semantics than the
    non-relaxed variants.
    
    This patch adds dummy macros for the write accessors to powerpc, in the
    same vein as the dummy definitions for the relaxed read accessors.
    
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
    5da59057