memset() in spu_init_csa() is superfluous because that memory region is allready
zeroed by kzalloc() on allocation (and I haven't seen any other reference to the
function beside alloc_spu_context()).

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
--- a/arch/powerpc/platforms/cell/spufs/switch.c
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -2201,7 +2201,6 @@ int spu_init_csa(struct spu_state *csa)
 
 	if (!csa)
 		return -EINVAL;
-	memset(csa, 0, sizeof(struct spu_state));
 
 	rc = spu_alloc_lscsa(csa);
 	if (rc)

--