[PATCH v6 06/26] iio: mlx90614: #undef field_{get,prep}() before local definition

Geert Uytterhoeven
2025-11-06T13:35:34Z

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@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v6:
- No changes,

v5:
- New.
---
drivers/iio/temperature/mlx90614.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/iio/temperature/mlx90614.c b/drivers/iio/temperature/mlx90614.c
index 8a44a00bfd5ece38..de5615fdb396aa3c 100644
--- a/drivers/iio/temperature/mlx90614.c
+++ b/drivers/iio/temperature/mlx90614.c
@@ -69,7 +69,9 @@
#define MLX90614_CONST_FIR 0x7 /* Fixed value for FIR part of low pass filter */

/* 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))

struct mlx_chip_info {
--
2.43.0