linux-kernel - [PATCH v6 01/26] clk: at91: pmc: #undef field

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Message-ID: <939d8c6da1f468026b1bb201413ba08b1d0751fd.1762435376.git.geert+renesas@glider.be>
Date: Thu,  6 Nov 2025 14:33:49 +0100
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Yury Norov <yury.norov@...il.com>,
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Cc: linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-renesas-soc@...r.kernel.org,
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	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v6 01/26] clk: at91: pmc: #undef field_{get,prep}() before definition

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@...il.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Acked-by: Alexandre Belloni <alexandre.belloni@...tlin.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