c6x: use asm-generic/barrier.h

A recent patch in the linux-next tree caused a build failure on C6X because C6X didn't define a read_barrier_depends() macro. C6X does not support SMP and the architecture doesn't provide any special memory ordering instructions, so it makes sense to just use the generic barrier.h rather than patching the existing c6x specific header. Signed-off-by: Mark Salter <msalter@redhat.com>
m-labs · Sep 24, 2012 · b02d617 · b02d617
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commit b02d617
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diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild
@@ -2,6 +2,7 @@ include include/asm-generic/Kbuild.asm
 
 generic-y += atomic.h
 generic-y += auxvec.h
+generic-y += barrier.h
 generic-y += bitsperlong.h
 generic-y += bugs.h
 generic-y += cputime.h

diff --git a/arch/c6x/include/asm/barrier.h b/arch/c6x/include/asm/barrier.h