[PATCH 2/3] linux/barebox-wrapper: Silence gcc5 warning

[Sascha Hauer]

gcc5 warns about using flags uninitialized in spin_lock_irqsave,
although it could look into the static inline spin_lock_irqsave
implementation and see it's not used at all. An empty define instead
of the static inline wrapper would lead to a "unused variable" warning.
Let's create a macro and fake some usage of the flags variable. This
probably helps until gcc6 is out.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 include/linux/barebox-wrapper.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/barebox-wrapper.h b/include/linux/barebox-wrapper.h
index 3859185..5fe7971 100644
--- a/include/linux/barebox-wrapper.h
+++ b/include/linux/barebox-wrapper.h
@@ -39,8 +39,8 @@ typedef int   spinlock_t;
 #define spin_lock_init(...)
 #define spin_lock(...)
 #define spin_unlock(...)
-static inline void spin_lock_irqsave(spinlock_t *lock, unsigned long flags) {}
-static inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags) {}
+#define spin_lock_irqsave(lock, flags) do { flags = 0; } while (0)
+#define spin_unlock_irqrestore(lock, flags) do { flags = flags; } while (0)
 
 #define mutex_init(...)
 #define mutex_lock(...)
-- 
2.6.2