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([39.120.225.141]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-210bbf6dd62sm63475445ad.95.2024.10.29.03.22.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Oct 2024 03:22:46 -0700 (PDT) From: Gyeyoung Baek To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: Gyeyoung Baek , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] Fix unused variable warning in 'drm_print.h' Date: Tue, 29 Oct 2024 19:22:34 +0900 Message-Id: <20241029102234.187480-1-gye976@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 --- 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)