From patchwork Fri Jan 25 14:14:32 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [15/19] sunrpc: don't warn for unused variable 'buf' Date: Fri, 25 Jan 2013 04:14:32 -0000 From: Arnd Bergmann X-Patchwork-Id: 215743 Message-Id: <1359123276-15833-16-git-send-email-arnd@arndb.de> To: linux-arm-kernel@list.infradead.org Cc: linux-kernel@vger.kernel.org, Arnd Bergmann , "J. Bruce Fields" , Trond Myklebust , linux-nfs@vger.kernel.org, netdev@vger.kernel.org When RPC_DEBUG is unset, the dprintk() macro does nothing, causing the 'buf' variable in svc_printk to become unused. Marking it as __maybe_unused avoids a harmless gcc warning. Without this patch, building at91_dt_defconfig results in: net/sunrpc/svc.c: In function 'svc_printk': net/sunrpc/svc.c:1051:7: warning: unused variable 'buf' [-Wunused-variable] Signed-off-by: Arnd Bergmann Cc: "J. Bruce Fields" Cc: Trond Myklebust Cc: linux-nfs@vger.kernel.org Cc: netdev@vger.kernel.org --- net/sunrpc/svc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index dbf12ac..b1f5223 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -1047,7 +1047,7 @@ void svc_printk(struct svc_rqst *rqstp, const char *fmt, ...) { struct va_format vaf; va_list args; - char buf[RPC_MAX_ADDRBUFLEN]; + char buf[RPC_MAX_ADDRBUFLEN] __maybe_unused; va_start(args, fmt);