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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,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 C3DE1C433E3 for ; Fri, 26 Mar 2021 15:12:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A43DC61A18 for ; Fri, 26 Mar 2021 15:12:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230487AbhCZPMK (ORCPT ); Fri, 26 Mar 2021 11:12:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230271AbhCZPL3 (ORCPT ); Fri, 26 Mar 2021 11:11:29 -0400 Received: from mail-io1-xd2a.google.com (mail-io1-xd2a.google.com [IPv6:2607:f8b0:4864:20::d2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15D16C0613B3 for ; Fri, 26 Mar 2021 08:11:29 -0700 (PDT) Received: by mail-io1-xd2a.google.com with SMTP id f19so5727018ion.3 for ; Fri, 26 Mar 2021 08:11:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ON7mTEa9Z5iycj+8Dq01c6t5kdr65s/3oEf4V/BNG54=; b=uSytPxU0fioXBXMUp74Lq1wYb48z4DVbO8EaBufLVXSI3G3ZySDuz4Nd16MiOnPVff /87vuHuWCfn/wcX3RoqnBnunpudy1P3D46oHVsXzgqXglJRz1hj3t1S/gKj5Rirwq/r8 dodflE51CWocOj+jxPtxq/b5qW51EQZ9jIcOiMljQF37ymvUIY9MH4HctmV/8O1PaiXr aVuuVJk6nUYvT4nksgYiPkbhBwzB4z+gqGQ+Pq0O1+9vb0MzcPsAkaXOrDHXdS5nY884 czM3u2//HNtlB1KPqJCu3oNk2S2yfNAz6PaSZ41ulA7IjoAzlFC3i/IyxViyek92PHpX Pfgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ON7mTEa9Z5iycj+8Dq01c6t5kdr65s/3oEf4V/BNG54=; b=PweC+1o4Aa1XNKKtZUoSYoJNxDGQkG/hdfTE3WGKLHlaUM1hq+XS7XDCBnsspGPTYq R366dyi6aBgkVbod5s9HgX1pFkkxPde7/ngJ8HTxLkVEFwUC4LpoWqy/z/iJDkZodHdf cWOWQe0fqVjldPxPPH/XlwP7l/gVRTxhSzSG+pLOMOVgOdJO/jeh8+vz1c3buvdv8oF7 ODosZ2O4QLe7FSJMRRfVqfrm+yLoV66P36Y9cMkRNFGlF9cLi6e4bEq/UkxbDg/zbcs4 Zw/I1diwqUZM/6+GaukP6yUnAUQ+st6Y8j8WazrIIdTR2wwOlm9tGv64SvVtYoOkgul/ uJ4w== X-Gm-Message-State: AOAM531c0mfeOG1u9Qjw2BxzH9gZz0zsYusFlvo2MS5F8z2Fxrz2cEYE 7HqCDJYMCMe/CCS2Oy8/KsRIFA== X-Google-Smtp-Source: ABdhPJzn1lAqd0prqLfqrIR8jHc/0onwvuVfk00mxzIYCqKvG0JEWDs2HAQhYwHwu+zh3I2RV7rV1A== X-Received: by 2002:a05:6638:35ab:: with SMTP id v43mr12347521jal.65.1616771488582; Fri, 26 Mar 2021 08:11:28 -0700 (PDT) Received: from localhost.localdomain (c-73-185-129-58.hsd1.mn.comcast.net. [73.185.129.58]) by smtp.gmail.com with ESMTPSA id j17sm4537706iok.37.2021.03.26.08.11.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Mar 2021 08:11:28 -0700 (PDT) From: Alex Elder To: davem@davemloft.net, kuba@kernel.org Cc: bjorn.andersson@linaro.org, evgreen@chromium.org, cpratapa@codeaurora.org, subashab@codeaurora.org, elder@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 02/12] net: ipa: fix bug in resource group limit programming Date: Fri, 26 Mar 2021 10:11:12 -0500 Message-Id: <20210326151122.3121383-3-elder@linaro.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210326151122.3121383-1-elder@linaro.org> References: <20210326151122.3121383-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If the number of resource groups supported by the hardware is less than a certain number, we return early in ipa_resource_config_src() and ipa_resource_config_dst() (to avoid programming resource limits for non-existent groups). Unfortunately, these checks are off by one. Fix this problem in the four places it occurs. Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_resource.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ipa/ipa_resource.c b/drivers/net/ipa/ipa_resource.c index 2f0f2dca36785..edd9d1e5cbb62 100644 --- a/drivers/net/ipa/ipa_resource.c +++ b/drivers/net/ipa/ipa_resource.c @@ -139,14 +139,14 @@ static void ipa_resource_config_src(struct ipa *ipa, ylimits = group_count == 1 ? NULL : &resource->limits[1]; ipa_resource_config_common(ipa, offset, &resource->limits[0], ylimits); - if (group_count < 2) + if (group_count < 3) return; offset = IPA_REG_SRC_RSRC_GRP_23_RSRC_TYPE_N_OFFSET(resource->type); ylimits = group_count == 3 ? NULL : &resource->limits[3]; ipa_resource_config_common(ipa, offset, &resource->limits[2], ylimits); - if (group_count < 4) + if (group_count < 5) return; offset = IPA_REG_SRC_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(resource->type); @@ -165,14 +165,14 @@ static void ipa_resource_config_dst(struct ipa *ipa, ylimits = group_count == 1 ? NULL : &resource->limits[1]; ipa_resource_config_common(ipa, offset, &resource->limits[0], ylimits); - if (group_count < 2) + if (group_count < 3) return; offset = IPA_REG_DST_RSRC_GRP_23_RSRC_TYPE_N_OFFSET(resource->type); ylimits = group_count == 3 ? NULL : &resource->limits[3]; ipa_resource_config_common(ipa, offset, &resource->limits[2], ylimits); - if (group_count < 4) + if (group_count < 5) return; offset = IPA_REG_DST_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(resource->type); -- 2.27.0