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Message-Id: <20241029102234.187480-1-gye976@gmail.com>
Date: Tue, 29 Oct 2024 19:22:34 +0900
From: Gyeyoung Baek <gye976@...il.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>
Cc: Gyeyoung Baek <gye976@...il.com>,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] Fix unused variable warning in 'drm_print.h'
previous code can make unused variable warning,
e.g. when CONFIG_DRM_USE_DYNAMIC_DEBUG is set,
this outputs the following build error.
drivers/gpu/drm/drm_print.c: In function ‘__drm_printfn_dbg’:
drivers/gpu/drm/drm_print.c:218:33: error: unused variable ‘category’ [-Werror=unused-variable]
218 | enum drm_debug_category category = p->category;
so i simply add '(void)(category);' to remove unused variable warning,
by referring to "https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html".
Signed-off-by: Gyeyoung Baek <gye976@...il.com>
---
include/drm/drm_print.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index d2676831d765..6a5dc1f73ff2 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -157,7 +157,7 @@ static inline bool drm_debug_enabled_raw(enum drm_debug_category category)
* a descriptor, and only enabled callsites are reachable. They use
* the private macro to avoid re-testing the enable-bit.
*/
-#define __drm_debug_enabled(category) true
+#define __drm_debug_enabled(category) ({ (void)(category); true; })
#define drm_debug_enabled(category) drm_debug_enabled_instrumented(category)
#else
#define __drm_debug_enabled(category) drm_debug_enabled_raw(category)
--
2.34.1
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