linux-kernel - [PATCH 27/57] staging: vt6655: upc: Suppress set but not used warning in macro

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Date:   Wed, 14 Apr 2021 19:10:59 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org,
        Forest Bond <forest@...ttletooquiet.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev
Subject: [PATCH 27/57] staging: vt6655: upc: Suppress set but not used warning in macro

The variable is used in the function using the macro.

Fixes the following W=1 kernel build warning(s):

 drivers/staging/vt6655/upc.h:45:16: warning: variable ‘byData’ set but not used [-Wunused-but-set-variable]

Cc: Forest Bond <forest@...ttletooquiet.net>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-staging@...ts.linux.dev
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/staging/vt6655/upc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/vt6655/upc.h b/drivers/staging/vt6655/upc.h
index e086ec6e77f73..8608693ae9c3e 100644
--- a/drivers/staging/vt6655/upc.h
+++ b/drivers/staging/vt6655/upc.h
@@ -42,7 +42,7 @@
 
 #define PCAvDelayByIO(uDelayUnit)				\
 do {								\
-	unsigned char byData;					\
+	unsigned char __maybe_unused byData;			\
 	unsigned long ii;					\
 								\
 	if (uDelayUnit <= 50) {					\
-- 
2.27.0