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[70.73.24.112]) by mx.google.com with ESMTPSA id od13sm8108693pdb.18.2015.01.09.15.57.40 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 09 Jan 2015 15:57:40 -0800 (PST) From: mathieu.poirier@linaro.org To: gregkh@linuxfoundation.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org Subject: [PATCH 06/11] coresight-etm: Fix initial trace ID value Date: Fri, 9 Jan 2015 16:57:17 -0700 Message-Id: <1420847842-31769-7-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1420847842-31769-1-git-send-email-mathieu.poirier@linaro.org> References: <1420847842-31769-1-git-send-email-mathieu.poirier@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: mathieu.poirier@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.177 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , From: Mathieu Poirier The coresight TRM specify that a component's trace ID should be other than 0. Signed-off-by: Mathieu Poirier --- drivers/coresight/coresight-etm3x.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/coresight/coresight-etm3x.c b/drivers/coresight/coresight-etm3x.c index 369cac00afaa..73c36696f1b6 100644 --- a/drivers/coresight/coresight-etm3x.c +++ b/drivers/coresight/coresight-etm3x.c @@ -1749,7 +1749,11 @@ static void etm_init_arch_data(void *info) static void etm_init_default_data(struct etm_drvdata *drvdata) { - static int etm3x_traceid; + /* + * A trace ID of value 0 is invalid, so let's start at some + * random value that fits in 7 bits and will be just as good. + */ + static int etm3x_traceid = 0x10; u32 flags = (1 << 0 | /* instruction execute*/ 3 << 3 | /* ARM instruction */