[PATCH v6 01/26] clk: at91: pmc: #undef field_{get,prep}() before definition

Geert Uytterhoeven
2025-11-06T13:34:42Z

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>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
v6:
- Add Acked-by,

v5:
- New.
---
drivers/clk/at91/pmc.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 5daa32c4cf2540d7..78a87d31463e98b0 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -117,7 +117,9 @@ struct at91_clk_pms {
unsigned int parent;
};

+#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 ndck(a, s) (a[s - 1].id + 1)
--
2.43.0