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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 BE248C433E7 for ; Wed, 2 Sep 2020 10:39:25 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7D3722071B for ; Wed, 2 Sep 2020 10:39:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ss9torYD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7D3722071B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=G7NpSWuoHDkZm3KGyepKfsembxbfWiklxiZtQNzDDcU=; b=ss9torYD8gjWxnevaUVR/9kEGt 38rJfzNygluZzS4Wa6txn7M9VzUJ5atd6jivECQ6CK0mLj/vTy16GuYHxSrnR9yjfE7RntHhRlI9Y b8kfr3S1GxQ5smsmNjIlm+4FYQvQLEwW7x9rrummzFW5hmNjO68xJmSuxnPoxu21tISkJ6to196XM VZOgHWhDVCFjJc6jzYU36l81MvglT2zZFJuaq/f+tupSDVLs+aND5HLEY2xNUDYOhvAtaBo9Twr3Y mvy4iMM97ZwqtzX5mSACKSBxImqRgaO6Cs4rawNOAE5XqMEMV+V9Ms2YZiQQUmQ3kXKkrSV+eEnYK 8yhQVknA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDQ9i-0006en-1W; Wed, 02 Sep 2020 10:38:18 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDQ9e-0006dt-Pv for linux-arm-kernel@lists.infradead.org; Wed, 02 Sep 2020 10:38:15 +0000 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id E3DD05D314E8237B2C75; Wed, 2 Sep 2020 18:38:11 +0800 (CST) Received: from SZX1000512381.huawei.com (10.21.83.30) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Wed, 2 Sep 2020 18:38:05 +0800 From: Jonathan Zhou To: Subject: [PATCH] coresight: etm4x: fix issues on trcseqevr access Date: Wed, 2 Sep 2020 18:37:13 +0800 Message-ID: <1599043033-57852-1-git-send-email-jonathan.zhouwen@huawei.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Originating-IP: [10.21.83.30] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200902_063815_081888_104FC90F X-CRM114-Status: GOOD ( 11.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mathieu Poirier , Suzuki K Poulose , lizixian@hisilicon.com, Shaokun Zhang , Jonathan Zhou , Mike Leach Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The TRCSEQEVR(3) is reserved, using '@nrseqstate - 1' instead to avoid accessing the reserved register. Fixes: f188b5e76aae ("coresight: etm4x: Save/restore state across CPU low power states") Cc: Mathieu Poirier Cc: Suzuki K Poulose Cc: Mike Leach Cc: Shaokun Zhang Cc: lizixian@hisilicon.com Signed-off-by: Jonathan Zhou --- drivers/hwtracing/coresight/coresight-etm4x.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c index 96425e818fc2..44e44c817bf8 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x.c @@ -1183,7 +1183,7 @@ static int etm4_cpu_save(struct etmv4_drvdata *drvdata) state->trcvdsacctlr = readl(drvdata->base + TRCVDSACCTLR); state->trcvdarcctlr = readl(drvdata->base + TRCVDARCCTLR); - for (i = 0; i < drvdata->nrseqstate; i++) + for (i = 0; i < drvdata->nrseqstate - 1; i++) state->trcseqevr[i] = readl(drvdata->base + TRCSEQEVRn(i)); state->trcseqrstevr = readl(drvdata->base + TRCSEQRSTEVR); @@ -1288,7 +1288,7 @@ static void etm4_cpu_restore(struct etmv4_drvdata *drvdata) writel_relaxed(state->trcvdsacctlr, drvdata->base + TRCVDSACCTLR); writel_relaxed(state->trcvdarcctlr, drvdata->base + TRCVDARCCTLR); - for (i = 0; i < drvdata->nrseqstate; i++) + for (i = 0; i < drvdata->nrseqstate - 1; i++) writel_relaxed(state->trcseqevr[i], drvdata->base + TRCSEQEVRn(i)); -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel