In architectures that use qspinlock, like x86, prefetch is loaded indirectly via the asm/qspinlock.h include. On other architectures, like OpenRISC, which may want to use asm-generic/qspinlock.h the built will fail without the asm/prefetch.h include.
Fix this by including directly. Signed-off-by: Stafford Horne <[email protected]> --- kernel/locking/qspinlock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c index b2caec7..fd24153 100644 --- a/kernel/locking/qspinlock.c +++ b/kernel/locking/qspinlock.c @@ -28,6 +28,7 @@ #include <linux/percpu.h> #include <linux/hardirq.h> #include <linux/mutex.h> +#include <linux/prefetch.h> #include <asm/byteorder.h> #include <asm/qspinlock.h> -- 2.9.4
