From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753122AbcHAXA5 (ORCPT ); Mon, 1 Aug 2016 19:00:57 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:30874 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752935AbcHAXAq (ORCPT ); Mon, 1 Aug 2016 19:00:46 -0400 X-IBM-Helo: d24dlp02.br.ibm.com X-IBM-MailFrom: mauricfo@linux.vnet.ibm.com X-IBM-RcptTo: linux-doc@vger.kernel.org;linux-kernel@vger.kernel.org From: Mauricio Faria de Oliveira To: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, corbet@lwn.net, akpm@linux-foundation.org, rmk+kernel@arm.linux.org.uk, keith.busch@intel.com, axboe@fb.com, benh@kernel.crashing.org, mpe@ellerman.id.au Cc: k.kozlowski@samsung.com Subject: [PATCH 2/3] powerpc: implement the DMA_ATTR_NO_WARN attribute Date: Mon, 1 Aug 2016 19:59:49 -0300 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1470092390-25451-1-git-send-email-mauricfo@linux.vnet.ibm.com> References: <1470092390-25451-1-git-send-email-mauricfo@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16080122-0024-0000-0000-000000EBC29D X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16080122-0025-0000-0000-00001572E81B Message-Id: <1470092390-25451-3-git-send-email-mauricfo@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-08-01_15:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=2 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1608010236 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for the DMA_ATTR_NO_WARN attribute on powerpc iommu code. Signed-off-by: Mauricio Faria de Oliveira --- arch/powerpc/kernel/iommu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 37d6e74..5f202a5 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -479,7 +479,8 @@ int ppc_iommu_map_sg(struct device *dev, struct iommu_table *tbl, /* Handle failure */ if (unlikely(entry == DMA_ERROR_CODE)) { - if (printk_ratelimit()) + if (!(attrs & DMA_ATTR_NO_WARN) && + printk_ratelimit()) dev_info(dev, "iommu_alloc failed, tbl %p " "vaddr %lx npages %lu\n", tbl, vaddr, npages); @@ -776,7 +777,8 @@ dma_addr_t iommu_map_page(struct device *dev, struct iommu_table *tbl, mask >> tbl->it_page_shift, align, attrs); if (dma_handle == DMA_ERROR_CODE) { - if (printk_ratelimit()) { + if (!(attrs & DMA_ATTR_NO_WARN) && + printk_ratelimit()) { dev_info(dev, "iommu_alloc failed, tbl %p " "vaddr %p npages %d\n", tbl, vaddr, npages); -- 1.8.3.1