linux-kernel - [PATCH next 04/14] media: atomisp: Use static

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Message-Id: <20260121145731.3623-5-david.laight.linux@gmail.com>
Date: Wed, 21 Jan 2026 14:57:21 +0000
From: david.laight.linux@...il.com
To: Nathan Chancellor <nathan@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Arnd Bergmann <arnd@...db.de>,
	linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Yury Norov <yury.norov@...il.com>,
	Lucas De Marchi <lucas.demarchi@...el.com>,
	Jani Nikula <jani.nikula@...el.com>,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Kees Cook <keescook@...omium.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: David Laight <david.laight.linux@...il.com>
Subject: [PATCH next 04/14] media: atomisp: Use static_assert() for sanity check

From: David Laight <david.laight.linux@...il.com>

Compile-time tests being added to BIT() make it an 'integer constant
expression' rather than a pre-processor expression for W=1 builds.

Change the FRAC_ACC != BDS_UNIT test to use static_assert() so the code
compiles.

Signed-off-by: David Laight <david.laight.linux@...il.com>
---
 .../kernels/fixedbds/fixedbds_1.0/ia_css_fixedbds_param.h    | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/fixedbds/fixedbds_1.0/ia_css_fixedbds_param.h b/drivers/staging/media/atomisp/pci/isp/kernels/fixedbds/fixedbds_1.0/ia_css_fixedbds_param.h
index f7e5669d5125..31bce7b2650e 100644
--- a/drivers/staging/media/atomisp/pci/isp/kernels/fixedbds/fixedbds_1.0/ia_css_fixedbds_param.h
+++ b/drivers/staging/media/atomisp/pci/isp/kernels/fixedbds/fixedbds_1.0/ia_css_fixedbds_param.h
@@ -13,9 +13,8 @@
 #define BDS_UNIT 8
 #define FRAC_LOG 3
 #define FRAC_ACC BIT(FRAC_LOG)
-#if FRAC_ACC != BDS_UNIT
-#error "FRAC_ACC and BDS_UNIT need to be merged into one define"
-#endif
+static_assert(FRAC_ACC == BDS_UNIT,
+	"FRAC_ACC and BDS_UNIT need to be merged into one define");
 
 struct sh_css_isp_bds_params {
 	int baf_strength;
-- 
2.39.5