From: ext Russell King - ARM Linux <li...@arm.linux.org.uk> Subject: Re: [RFC/PATCH 3/3] omap3-iommu: remote registration Date: Mon, 18 May 2009 14:11:13 +0200
> On Sat, May 16, 2009 at 01:05:50PM +0300, Felipe Contreras wrote: > > This allows devices to be registered only when they are used. The > > current dsp-bridge driver for example is not using iommu so registering > > the iommu iva2 device would conflict. By allowing remote registration > > the dsp-bridge can decide when the iommu iva2 device is registered. > > I don't think that this is a good idea - what happens if two people > call omap_iommu_add() for the same IOMMU device independently? > > The real problem here seems to be the TI DSP bridge code, and if that's > the case why can't we just avoid registering IVA2 if the TI DSP bridge > code is enabled. That solves your stated problem without creating > additional management issues. How about the attached patch? I think this is enough.
0001-omap-iommu-disable-iva2-iommu-device-registration-i.patch
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