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[45.33.96.30]) by smtp.gmail.com with ESMTPSA id m5sm3762076ywj.27.2019.10.31.19.08.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Oct 2019 19:08:25 -0700 (PDT) From: Leo Yan To: Arnaldo Carvalho de Melo , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-arm-kernel , Linux Kernel Mailing List , Coresight ML , Robert Walker Cc: Leo Yan Subject: [PATCH v2 4/4] perf cs-etm: Fix unsigned variable comparison to zero Date: Fri, 1 Nov 2019 10:07:50 +0800 Message-Id: <20191101020750.29063-5-leo.yan@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191101020750.29063-1-leo.yan@linaro.org> References: <20191101020750.29063-1-leo.yan@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The variable 'offset' in function cs_etm__sample() is u64 type, it's not appropriate to check it with 'while (offset > 0)'; this patch changes to 'while (offset)'. Signed-off-by: Leo Yan --- tools/perf/util/cs-etm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.17.1 diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index d9a857abaca8..52fe7d6d4f29 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -945,7 +945,7 @@ static inline u64 cs_etm__instr_addr(struct cs_etm_queue *etmq, if (packet->isa == CS_ETM_ISA_T32) { u64 addr = packet->start_addr; - while (offset > 0) { + while (offset) { addr += cs_etm__t32_instr_size(etmq, trace_chan_id, addr); offset--;