[PATCH v2] bus: mvebu-mbus: Avoid setting an undefined window size

Jason Gunthorpe jgunthorpe at obsidianresearch.com
Wed Apr 9 09:30:54 PDT 2014

On Wed, Apr 09, 2014 at 09:53:50AM +0200, Thomas Petazzoni wrote:

> Maybe this is something that Jason can confirm/infirm. I remember
> having a quick look at the core Linux PCI core to see if it was
> somehow checking whether the bridge BAR has been properly configured,
> but I think I concluded it was not the case, and it was just assuming
> that write the memory base/limit in the bridge registers was
> sufficient. 

I think the best way to fail would be to return an error from
mvebu_pcie_align_resource - but we can't create the window in that

Once things get to the BAR write stage it shouldn't fail unfortunately.


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