regmap: change struct regmap's internal locks as union
this patch change struct regmap->mutex and struct regmap->spinlock
as an union, because these 2 members are only used one of them,
we change it to shrink the struct size.
Signed-off-by: Yalin Wang <yalin.wang@sonymobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 7d13269..f82e8fa 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -49,8 +49,10 @@
};
struct regmap {
- struct mutex mutex;
- spinlock_t spinlock;
+ union {
+ struct mutex mutex;
+ spinlock_t spinlock;
+ };
unsigned long spinlock_flags;
regmap_lock lock;
regmap_unlock unlock;