From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 86601C43331 for ; Sun, 10 Nov 2019 02:58:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4F4B121019 for ; Sun, 10 Nov 2019 02:58:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573354698; bh=v1U9l228jWqtWhwzn9ffmWZreUwxYYHeC5kYUpJ+idU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2IRPxOUSpGOpH4RLYamB5eBr9YuQ+nlX+ra8CFfhb2tbbBBPLgdgw3foZqPP0wBD6 yXdfWAI58GAGovI6X/8mFXbWYy1N35HVDw7vwnsPxCkofLf3Q1JwTUuRhTAsKFtVt/ aGHfBq3P8efGVAe7sbJIzamJ7wFL/ZEym4WS2Ew4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728447AbfKJC6Q (ORCPT ); Sat, 9 Nov 2019 21:58:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:47198 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729427AbfKJC4s (ORCPT ); Sat, 9 Nov 2019 21:56:48 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1EB0E2245B; Sun, 10 Nov 2019 02:47:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573354054; bh=v1U9l228jWqtWhwzn9ffmWZreUwxYYHeC5kYUpJ+idU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pb3m+jbj7EmdjgdHMnkbStKES7G3U0f4jsx9u2Ckl4bew3kdfhrPZ9nBuHDUtN43E 00K+HLs2KBuETHifmRfk3oTaFH1o48YXq3FiShRi0YZmaGtcc+eW8p3yLfiMH4dtSW Ffe50T2fMgt63Kc5sIgwxxZAlEvRlVzC0idmRPOQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Suzuki K Poulose , Mathieu Poirier , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH AUTOSEL 4.14 064/109] coresight: perf: Disable trace path upon source error Date: Sat, 9 Nov 2019 21:44:56 -0500 Message-Id: <20191110024541.31567-64-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191110024541.31567-1-sashal@kernel.org> References: <20191110024541.31567-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Suzuki K Poulose [ Upstream commit 4f8ef21007531c3d7cb5b826e7b2c8999b65ecae ] We enable the trace path, before activating the source. If we fail to enable the source, we must disable the path to make sure it is available for another session. Cc: Mathieu Poirier Signed-off-by: Suzuki K Poulose Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/hwtracing/coresight/coresight-etm-perf.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 99cbf5d5d1c1f..69349b93e8741 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -317,11 +317,13 @@ static void etm_event_start(struct perf_event *event, int flags) /* Finally enable the tracer */ if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF)) - goto fail_end_stop; + goto fail_disable_path; out: return; +fail_disable_path: + coresight_disable_path(path); fail_end_stop: perf_aux_output_flag(handle, PERF_AUX_FLAG_TRUNCATED); perf_aux_output_end(handle, 0); -- 2.20.1