Re: [PATCH] PCI: call dma_debug_add_bus for pci_bus_type in common code

From: Christoph Hellwig
Date: Tue Jul 31 2018 - 04:03:03 EST

On Mon, Jul 30, 2018 at 04:17:13PM -0500, Bjorn Helgaas wrote:
> [+cc Joerg]
> On Mon, Jul 30, 2018 at 09:38:42AM +0200, Christoph Hellwig wrote:
> > There is nothing arch specific about PCI or dma-debug, so move this
> > call to common code just after registering the bus type.
> I assume that previously, even if the user set CONFIG_DMA_API_DEBUG=y
> we only got PCI DMA debug on powerpc, sh, and x86. And after this
> patch, we'll get PCI DMA debug on *all* arches?

Yes. Note that this only covers the actual bus related part, that
is warning about outstanding dma mappings on unload. The rest of the
dma api debugging already is entirely generic.