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=-9.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 55F06C4741F for ; Thu, 5 Nov 2020 18:16:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A341120782 for ; Thu, 5 Nov 2020 18:16:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="NDDHLjmK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731925AbgKESQU (ORCPT ); Thu, 5 Nov 2020 13:16:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729862AbgKESQU (ORCPT ); Thu, 5 Nov 2020 13:16:20 -0500 Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4AFB5C0613CF for ; Thu, 5 Nov 2020 10:16:20 -0800 (PST) Received: by mail-pl1-x641.google.com with SMTP id 1so1182215ple.2 for ; Thu, 05 Nov 2020 10:16:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=8DAc+yqZFTta9RaCxZpWb6+nPvWwsd8gU2kgzP9O8nc=; b=NDDHLjmKCrwxORbkYjMPorLHS+6jqgXsTkedKqV0bhbGMIiZdDpX3u2gGayQO4iQL9 VRanoOw05oECWNtoGEqgHQrXzhBNN8O6SCxY0U9pTN9fHeQ2+shkjTqd86TQQ4Mk7zqw qSXvQDz/nCLepFzTwLsJoFwn0poktE8iyyzVhd2aeMo6osmBph6keMEaoTnqFMJR0MsI 1Kk0iOaZzPA6JRPJiqbFMqLB+a7OGB8DnFpvoX32lgMQfM75KOacMW8lJbGKqiBiw+QX rVQQz1c2W6RLzaPMjH0mH1eMYar/JrWRhVb8qgqwzJHI9cVqlo7dvgJSMGposDJL2rVQ kAHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=8DAc+yqZFTta9RaCxZpWb6+nPvWwsd8gU2kgzP9O8nc=; b=uQ5QhBGO3KMqADMYSEKc0DX1JXEfMme0p5zfcVoSvhRdEVISBf3OSNyL7fNJRw2WIH iqK4Fu6XCQ4jPNEZUo9G6MSfWSngYNkmo63N+5PBTRew43rOaySXwzIKHUA6c267h8lE nw1aNNJsJ4EXyyEathejvnBUTsPoYK6dN69fIrXFdLhnHZFQ91lJ2lhxK8ziGdKk96HF 5K5v+1u15S239Pd/56nhZqSDdyK8Z/gWsd2LsIVPyzBSzsReEqAbkT5b7hdVtwSZrd8g eeLKcJ/2pgarstdb3zJwXs2smr+1edc7xc5U5pkMvr6Nhbzrp9y6ugvYSzbzpVR7trKY vkaw== X-Gm-Message-State: AOAM5311jYXGBDl9Bp3fMgfRN2a4cSLgQBOk+KG0an5X39RH2v3663LS Rdhy7Nh3yjy0cGQDljCaHdY= X-Google-Smtp-Source: ABdhPJxFb/P68iReWq/rQU77ozYWg2HQsHgI3Jdm1aL9Q9i/nGtoo22bjdLmibG1FNtQPPFxGYjq/g== X-Received: by 2002:a17:90b:4a4e:: with SMTP id lb14mr1740465pjb.23.1604600179899; Thu, 05 Nov 2020 10:16:19 -0800 (PST) Received: from localhost ([160.202.157.3]) by smtp.gmail.com with ESMTPSA id i11sm3259743pfq.156.2020.11.05.10.16.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Nov 2020 10:16:19 -0800 (PST) Date: Thu, 5 Nov 2020 23:46:13 +0530 From: Deepak R Varma To: Eric Anholt , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: mh12gx2825@gmail.com, maxime@cerno.tech, mripard@kernel.org Subject: [PATCH] drm/vc4: replace idr_init() by idr_init_base() Message-ID: <20201105181613.GA42968@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org idr_init() uses base 0 which is an invalid identifier for this driver. The idr_alloc for this driver uses VC4_PERFMONID_MIN as start value for ID range and it is #defined to 1. The new function idr_init_base allows IDR to set the ID lookup from base 1. This avoids all lookups that otherwise starts from 0 since 0 is always unused / available. References: commit 6ce711f27500 ("idr: Make 1-based IDRs more efficient") Signed-off-by: Deepak R Varma --- drivers/gpu/drm/vc4/vc4_perfmon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vc4/vc4_perfmon.c b/drivers/gpu/drm/vc4/vc4_perfmon.c index f4aa75efd16b..7d40f421d922 100644 --- a/drivers/gpu/drm/vc4/vc4_perfmon.c +++ b/drivers/gpu/drm/vc4/vc4_perfmon.c @@ -77,7 +77,7 @@ struct vc4_perfmon *vc4_perfmon_find(struct vc4_file *vc4file, int id) void vc4_perfmon_open_file(struct vc4_file *vc4file) { mutex_init(&vc4file->perfmon.lock); - idr_init(&vc4file->perfmon.idr); + idr_init_base(&vc4file->perfmon.idr, 1); } static int vc4_perfmon_idr_del(int id, void *elem, void *data) -- 2.25.1