On Fri, 5 Apr 2019, Will Deacon wrote: > x86 maps mmiowb() to barrier(), but this is superfluous because a > compiler barrier is already implied by spin_unlock(). Since x86 also > includes asm-generic/io.h in its asm/io.h file, we can remove the s/we can// > definition entirely and pick up the dummy definition from core code. > > Signed-off-by: Will Deacon <will.deacon@xxxxxxx> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
