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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 3C3A1C433F5 for ; Fri, 10 Sep 2021 00:43:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 282706115A for ; Fri, 10 Sep 2021 00:43:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241048AbhIJAo5 (ORCPT ); Thu, 9 Sep 2021 20:44:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:46906 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230495AbhIJAUw (ORCPT ); Thu, 9 Sep 2021 20:20:52 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 26765610A3; Fri, 10 Sep 2021 00:19:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631233182; bh=3EJEYSbrALYB7LpHafXO2ujVXrI1FWjSHMvrjjUfelw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q52Paj8SEB3NhmWA/rfmwC2LVuleH7Poc03lc44itmOzBEV/eHrobm9NSJyNaeUd5 CXjSI1a9wt7DesoDZVRray8E7wDHBhRQAczZVVsdZmriT2vfN9+UsEPut5r5uQ1Ntf UQNJ/R5KSAiUs75BhfJmPozJNnVVsQCvZ0wNcacv1YvXeJD2W+7/iYUMQuEN4gzki1 14+Jvlx/ilk79fTXYrF1/JrP6jxjqvO2W2AFog+eAYPnLYIhXlOSyivENfRCl8bado EVyLE97Xt1mwTgdUzjO6lmIjhPB4fC4XDGaLCPBaF78Sxo1bT/FusXDo4xR/Vz0k2V hk5j3QNEQHsdw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anthony Yznaga , Steve Sistare , Alex Williamson , Sasha Levin , kvm@vger.kernel.org Subject: [PATCH AUTOSEL 5.13 58/88] vfio/type1: Fix vfio_find_dma_valid return Date: Thu, 9 Sep 2021 20:17:50 -0400 Message-Id: <20210910001820.174272-58-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210910001820.174272-1-sashal@kernel.org> References: <20210910001820.174272-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Anthony Yznaga [ Upstream commit ffc95d1b8edb80d2dab77f2e8a823c8d93b06419 ] vfio_find_dma_valid is defined to return WAITED on success if it was necessary to wait. However, the loop forgets the WAITED value returned by vfio_wait() and returns 0 in a later iteration. Fix it. Signed-off-by: Anthony Yznaga Reviewed-by: Steve Sistare Link: https://lore.kernel.org/r/1629736550-2388-1-git-send-email-anthony.yznaga@oracle.com Signed-off-by: Alex Williamson Signed-off-by: Sasha Levin --- drivers/vfio/vfio_iommu_type1.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index a3e925a41b0d..98dd65bf8fe7 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -611,17 +611,17 @@ static int vfio_wait(struct vfio_iommu *iommu) static int vfio_find_dma_valid(struct vfio_iommu *iommu, dma_addr_t start, size_t size, struct vfio_dma **dma_p) { - int ret; + int ret = 0; do { *dma_p = vfio_find_dma(iommu, start, size); if (!*dma_p) - ret = -EINVAL; + return -EINVAL; else if (!(*dma_p)->vaddr_invalid) - ret = 0; + return ret; else ret = vfio_wait(iommu); - } while (ret > 0); + } while (ret == WAITED); return ret; } -- 2.30.2