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[PATCH/RFC,4.19.y-cip,v2,04/51] pinctrl: sh-pfc: Validate pins/marks in pin groups at build time

Message ID 1567098176-1242-5-git-send-email-fabrizio.castro@bp.renesas.com (mailing list archive)
State Accepted
Headers show
Series Fast forward sh-pfc | expand

Commit Message

Fabrizio Castro Aug. 29, 2019, 5:02 p.m. UTC 
From: Geert Uytterhoeven <geert+renesas@glider.be>

commit 9925e879572680125c5d00ad8b807aec720b1cb6 upstream.

Add a build-time check, to ensure the number of pins and pin marks in a
pin group matches.  This helps catching bugs early.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
---
 drivers/pinctrl/sh-pfc/sh_pfc.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/pinctrl/sh-pfc/sh_pfc.h b/drivers/pinctrl/sh-pfc/sh_pfc.h
index 8a06ebc..6d3430c 100644
--- a/drivers/pinctrl/sh-pfc/sh_pfc.h
+++ b/drivers/pinctrl/sh-pfc/sh_pfc.h
@@ -44,7 +44,8 @@  struct sh_pfc_pin {
 		.name = #alias,				\
 		.pins = n##_pins,			\
 		.mux = n##_mux,				\
-		.nr_pins = ARRAY_SIZE(n##_pins),	\
+		.nr_pins = ARRAY_SIZE(n##_pins) +	\
+		BUILD_BUG_ON_ZERO(sizeof(n##_pins) != sizeof(n##_mux)), \
 	}
 #define SH_PFC_PIN_GROUP(n)	SH_PFC_PIN_GROUP_ALIAS(n, n)