[PATCH -next v5 10/23] iio: imu: smi330: #undef field_{get,prep}() before definition

[Geert Uytterhoeven]

Prepare for the advent of globally available common field_get() and
field_prep() macros by undefining the symbols before defining local
variants.  This prevents redefinition warnings from the C preprocessor
when introducing the common macros later.

Suggested-by: Yury Norov <yury.norov at gmail.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
--
v5:
  - New.
---
 drivers/iio/imu/smi330/smi330_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/imu/smi330/smi330_core.c b/drivers/iio/imu/smi330/smi330_core.c
index d9178725ade3da83..a79964fe68fadf47 100644
--- a/drivers/iio/imu/smi330/smi330_core.c
+++ b/drivers/iio/imu/smi330/smi330_core.c
@@ -68,7 +68,9 @@
 #define SMI330_SOFT_RESET_DELAY 2000
 
 /* Non-constant mask variant of FIELD_GET() and FIELD_PREP() */
+#undef field_get
 #define field_get(_mask, _reg) (((_reg) & (_mask)) >> (ffs(_mask) - 1))
+#undef field_prep
 #define field_prep(_mask, _val) (((_val) << (ffs(_mask) - 1)) & (_mask))
 
 #define SMI330_ACCEL_CHANNEL(_axis) {					\
-- 
2.43.0