From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755554AbbKCQqj (ORCPT ); Tue, 3 Nov 2015 11:46:39 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:58672 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755503AbbKCQqg (ORCPT ); Tue, 3 Nov 2015 11:46:36 -0500 Subject: Re: [PATCH V2 2/3] dmaselftest: add memcpy selftest support functions To: Sinan Kaya , Vinod Koul Cc: dmaengine@vger.kernel.org, cov@codeaurora.org, jcm@redhat.com, Dan Williams , linux-kernel@vger.kernel.org References: <1446444460-21600-1-git-send-email-okaya@codeaurora.org> <1446444460-21600-3-git-send-email-okaya@codeaurora.org> <20151103041528.GS21326@localhost> <5638359D.9080507@codeaurora.org> <5638C55D.50001@codeaurora.org> <20151103161013.GE12910@localhost> <5638E0A5.4060401@codeaurora.org> From: Timur Tabi Message-ID: <5638E4EA.1040905@codeaurora.org> Date: Tue, 3 Nov 2015 10:46:34 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:41.0) Gecko/20100101 Firefox/41.0 SeaMonkey/2.38 MIME-Version: 1.0 In-Reply-To: <5638E0A5.4060401@codeaurora.org> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sinan Kaya wrote: > 1. Bug in ARM64 DMA subsystem. > 2. Bug in IOMMU driver. > 3. Bug in another newly introduced driver. The new driver would hog the > CPU and won't allow HIDMA interrupts to execute. Therefore, the test > times out. Which driver? Wouldn't these problems already be exposed by dmatest? I was asking whether it's possible that, every now and then, your DMA internal test could fail and then the driver would unload. I'm not talking about hard bugs in other code that always causes the DMA driver test to fail. -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation.