From patchwork Mon Dec 28 12:46:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 353115 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, 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 44924C433E6 for ; Mon, 28 Dec 2020 16:13:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 158CF207FB for ; Mon, 28 Dec 2020 16:13:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388337AbgL1NWp (ORCPT ); Mon, 28 Dec 2020 08:22:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:50740 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388293AbgL1NWp (ORCPT ); Mon, 28 Dec 2020 08:22:45 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id D7778207CF; Mon, 28 Dec 2020 13:22:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609161749; bh=ZPGfBGeYg9CItXjRwc2VcSkGB4JLLeRan4J7333eP2g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=or3TO5yge4D+cOl31Ys5GGCCnnsmi4+e+2N0v590qkCYundm7wxhMgWzgKhiIt92g KkR9vfmDz8C0Wva09yDRnzzRaIU5k1KoSjbUOcNLPfTC9V/CpBpXqk6yOmqzN34ReG yjEAJnLwR0X4l0uU0BUBd21akAJWVAc607cO+vYs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Deepak R Varma , Thierry Reding , Sasha Levin Subject: [PATCH 4.19 069/346] drm/tegra: replace idr_init() by idr_init_base() Date: Mon, 28 Dec 2020 13:46:28 +0100 Message-Id: <20201228124923.135109179@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228124919.745526410@linuxfoundation.org> References: <20201228124919.745526410@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Deepak R Varma [ Upstream commit 41f71629b4c432f8dd47d70ace813be5f79d4d75 ] idr_init() uses base 0 which is an invalid identifier for this driver. 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. Signed-off-by: Deepak R Varma Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin --- drivers/gpu/drm/tegra/drm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index a2bd5876c6335..00808a3d67832 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -242,7 +242,7 @@ static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) if (!fpriv) return -ENOMEM; - idr_init(&fpriv->contexts); + idr_init_base(&fpriv->contexts, 1); mutex_init(&fpriv->lock); filp->driver_priv = fpriv;