From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755423AbbLVWWD (ORCPT ); Tue, 22 Dec 2015 17:22:03 -0500 Received: from 8bytes.org ([81.169.241.247]:47559 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754702AbbLVWWA (ORCPT ); Tue, 22 Dec 2015 17:22:00 -0500 From: Joerg Roedel To: iommu@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, joro@8bytes.org, jroedel@suse.de Subject: [PATCH 01/23] iommu/amd: Warn only once on unexpected pte value Date: Tue, 22 Dec 2015 23:21:06 +0100 Message-Id: <1450822888-22590-2-git-send-email-joro@8bytes.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1450822888-22590-1-git-send-email-joro@8bytes.org> References: <1450822888-22590-1-git-send-email-joro@8bytes.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Joerg Roedel This prevents possible flooding of the kernel log. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 8b2be1e..3cdfac6 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2328,7 +2328,7 @@ static dma_addr_t dma_ops_domain_map(struct dma_ops_domain *dom, else if (direction == DMA_BIDIRECTIONAL) __pte |= IOMMU_PTE_IR | IOMMU_PTE_IW; - WARN_ON(*pte); + WARN_ON_ONCE(*pte); *pte = __pte; @@ -2357,7 +2357,7 @@ static void dma_ops_domain_unmap(struct dma_ops_domain *dom, pte += PM_LEVEL_INDEX(0, address); - WARN_ON(!*pte); + WARN_ON_ONCE(!*pte); *pte = 0ULL; } -- 1.9.1