From patchwork Mon May 16 19:36:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 573790 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C20CC433F5 for ; Mon, 16 May 2022 20:02:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346768AbiEPTzs (ORCPT ); Mon, 16 May 2022 15:55:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347030AbiEPTvf (ORCPT ); Mon, 16 May 2022 15:51:35 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8DC1E3EB82; Mon, 16 May 2022 12:46:43 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 414E7B815F6; Mon, 16 May 2022 19:46:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7D4EBC385AA; Mon, 16 May 2022 19:46:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652730400; bh=icSuAv8bKxjkgQCS0+EKtkHmPx2uqUq5zHY0/SpG3nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Xj77AOwJaNvWloM7psr6fTzNSXEzToFcHqKBRHpYcsZmg5CLwl3xqv/b2YDznZIS+ a/Lre+N97soNDe25+Zpxq+NDAZHgM8yMv2iUR2Y1X5QBkzWI+YJELXtWEPTND8Wb8c b1BQ2EGbDKTxw66hEOjvd09zMc7lij6me43nV6Xc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Robin Murphy , Lyude Paul Subject: [PATCH 5.10 53/66] drm/nouveau/tegra: Stop using iommu_present() Date: Mon, 16 May 2022 21:36:53 +0200 Message-Id: <20220516193620.942202204@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193619.400083785@linuxfoundation.org> References: <20220516193619.400083785@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Robin Murphy commit 87fd2b091fb33871a7f812658a0971e8e26f903f upstream. Even if some IOMMU has registered itself on the platform "bus", that doesn't necessarily mean it provides translation for the device we care about. Replace iommu_present() with a more appropriate check. Signed-off-by: Robin Murphy Reviewed-by: Lyude Paul [added cc for stable] Signed-off-by: Lyude Paul Cc: stable@vger.kernel.org # v5.0+ Link: https://patchwork.freedesktop.org/patch/msgid/70d40ea441da3663c2824d54102b471e9a621f8a.1649168494.git.robin.murphy@arm.com Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c @@ -123,7 +123,7 @@ nvkm_device_tegra_probe_iommu(struct nvk mutex_init(&tdev->iommu.mutex); - if (iommu_present(&platform_bus_type)) { + if (device_iommu_mapped(dev)) { tdev->iommu.domain = iommu_domain_alloc(&platform_bus_type); if (!tdev->iommu.domain) goto error;