[Bug 215740] kernel warning: DMA-API: xhci_hcd: cacheline tracking EEXIST, overlapping mappings aren't supported

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https://bugzilla.kernel.org/show_bug.cgi?id=215740

Ferry Toth (ferry.toth@xxxxxxxxxxxx) changed:

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                 CC|                            |ferry.toth@xxxxxxxxxxxx

--- Comment #7 from Ferry Toth (ferry.toth@xxxxxxxxxxxx) ---
In my case it is EVM9514, a 4p USB hub + 10/100 ethernet:
https://www.microchip.com/en-us/development-tool/EVB9514

So, indeed it seems like to warning originates from hub code shared between at
least VL812 and LAN9514.

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