From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Date: Tue, 30 May 2017 11:32:13 +0200 From: Joerg Roedel To: Sricharan R Subject: Re: [PATCH v6 1/6] iommu: of: Fix check for returning EPROBE_DEFER Message-ID: <20170530093212.GD2818@8bytes.org> References: <1495892865-9506-1-git-send-email-sricharan@codeaurora.org> MIME-Version: 1.0 In-Reply-To: <1495892865-9506-1-git-send-email-sricharan@codeaurora.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: catalin.marinas@arm.com, will.deacon@arm.com, okaya@codeaurora.org, laurent.pinchart@ideasonboard.com, frowand.list@gmail.com, m.szyprowski@samsung.com, linux-arch@vger.kernel.org, lorenzo.pieralisi@arm.com, tn@semihalf.com, magnus.damm@gmail.com, linux@armlinux.org.uk, linux-acpi@vger.kernel.org, geert@linux-m68k.org, linux-pci@vger.kernel.org, lenb@kernel.org, devicetree@vger.kernel.org, arnd@arndb.de, linux-arm-msm@vger.kernel.org, j.neuschaefer@gmx.net, robh+dt@kernel.org, bhelgaas@google.com, linux-arm-kernel@lists.infradead.org, rjw@rjwysocki.net, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, hanjun.guo@linaro.org, sudeep.holla@arm.com, robin.murphy@arm.com, nwatters@codeaurora.org Content-Type: text/plain; charset="us-ascii" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+bjorn=helgaas.com@lists.infradead.org List-ID: On Sat, May 27, 2017 at 07:17:40PM +0530, Sricharan R wrote: > Now with IOMMU probe deferral, we return -EPROBE_DEFER > for masters that are connected to an IOMMU which is not > probed yet, but going to get probed, so that we can attach > the correct dma_ops. So while trying to defer the probe of > the master, check if the of_iommu node that it is connected > to is marked in DT as 'status=disabled', then the IOMMU is never > is going to get probed. So simply return NULL and let the master > work without an IOMMU. > > Fixes: 7b07cbefb68d ("iommu: of: Handle IOMMU lookup failure with deferred probing or error") > Reported-by: Geert Uytterhoeven > Reviewed-by: Laurent Pinchart > Tested-by: Will Deacon > Tested-by: Magnus Damn > Acked-by: Will Deacon > Signed-off-by: Sricharan R > --- > drivers/iommu/of_iommu.c | 1 + > 1 file changed, 1 insertion(+) Sorry for the confusion, I meant to apply this version of the patch-set instead of v5. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel