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 01998C388F7 for ; Thu, 5 Nov 2020 19:07:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5347920735 for ; Thu, 5 Nov 2020 19:07:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BQ/GK9IL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732099AbgKETH1 (ORCPT ); Thu, 5 Nov 2020 14:07:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60136 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728137AbgKETH0 (ORCPT ); Thu, 5 Nov 2020 14:07:26 -0500 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF6ECC0613D2 for ; Thu, 5 Nov 2020 11:07:25 -0800 (PST) Received: by mail-pj1-x1043.google.com with SMTP id w20so553376pjh.1 for ; Thu, 05 Nov 2020 11:07:25 -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=BgiHrklnpeZTNfHUUb4/9/03koRegsKFGWvFTDnluCI=; b=BQ/GK9ILSECdU6RkFDXdQ8h/kV97zEXhRiqF43KL4JQ02EvmZYyDQX8iljTDwvsxlk 2KURmI63vEDuwxwkyxfBvt1+5rUT00ML/HZRRAOj/6W/BXz7xEI945mma7f77t9bggTG xryBjaLokvtkPgT31UTriTMo2C6mSt6kA3t18NvNgr7mgq34KurD2FXD2SHZ6qw2S0iy VyuXyphZz8aPTHnJ7eEzWgrfslyWZnwQRi8TpbRnqHaFluD9nLHNmRVAI9q2shklV1hp JexCegf6zGvyB/pj/ag/agnLS5lHCEijBHwSGmhv7PyANiL2gjbczwL2qis/nzppeaSR aDgA== 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=BgiHrklnpeZTNfHUUb4/9/03koRegsKFGWvFTDnluCI=; b=o5ID8Tur1GcUsoJUsCecV84e1Fxq8fqKOXPNjT+lQW/q0o2v/iLbQ+Q/Ef8fXrWMYx 0Os70SQxUHZN3KdZf4I1z4WOnSZ41E1hNYRUJ4dLBg+Jmcu/likDJW9InllNn/vSF0K1 hVaThN/Bcy9tw1Fuw9cHCWgGSLNOFtj1hPfG67CT7OKCkgJn6UlUEulc2R1jnEB51FoU SXjfrV0uYHOuk6b+mRHyRcvRRxyeTZdrixHvGGQkYATr6XOVhLlIWDAe1IuW7NaTqBvv r1j6ESTkyNbi3ixA25XjzUzqVUUS+PZr2aa3U94XmjTE/oH+QqDcsYBuWniC+RzBqtQe mscQ== X-Gm-Message-State: AOAM532bpAU7waAWnL3//fM1+gnsQ8E3aD7g+fapjLuwfQe4qnNb+9sv wMCwexjEtVw24cfGA8tYzLc= X-Google-Smtp-Source: ABdhPJzw1QtrJdsbGtpN9Hgsb+fZFPtDupUe6LGfnX647S6DMfeeXsi+H9L4NS+pKucT9+mvxKLi2A== X-Received: by 2002:a17:902:ed04:b029:d6:e878:1013 with SMTP id b4-20020a170902ed04b02900d6e8781013mr3461916pld.56.1604603245478; Thu, 05 Nov 2020 11:07:25 -0800 (PST) Received: from localhost ([160.202.157.3]) by smtp.gmail.com with ESMTPSA id j2sm3190842pgi.48.2020.11.05.11.07.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Nov 2020 11:07:25 -0800 (PST) Date: Fri, 6 Nov 2020 00:37:18 +0530 From: Deepak R Varma To: VMware Graphics , Roland Scheidegger , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: mh12gx2825@gmail.com Subject: [PATCH] drm/vmwgfx: replace idr_init() by idr_init_base() Message-ID: <20201105190718.GA89863@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 1 as start value for ID range. 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/vmwgfx/ttm_object.c | 2 +- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.c b/drivers/gpu/drm/vmwgfx/ttm_object.c index 16077785ad47..cbedcb043803 100644 --- a/drivers/gpu/drm/vmwgfx/ttm_object.c +++ b/drivers/gpu/drm/vmwgfx/ttm_object.c @@ -540,7 +540,7 @@ ttm_object_device_init(struct ttm_mem_global *mem_glob, if (ret != 0) goto out_no_object_hash; - idr_init(&tdev->idr); + idr_init_base(&tdev->idr, 1); tdev->ops = *ops; tdev->dmabuf_release = tdev->ops.release; tdev->ops.release = ttm_prime_dmabuf_release; diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 31e3e5c9f362..a24d9363a17e 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -675,7 +675,7 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) spin_lock_init(&dev_priv->cursor_lock); for (i = vmw_res_context; i < vmw_res_max; ++i) { - idr_init(&dev_priv->res_idr[i]); + idr_init_base(&dev_priv->res_idr[i], 1); INIT_LIST_HEAD(&dev_priv->res_lru[i]); } -- 2.25.1