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Add a lifetime parameter to IoMem<'a, SIZE> and ExclusiveIoMem<'a, SIZE>, storing a &'a Device<Bound> reference to tie the mapping to the device's lifetime. This mirrors the pci::Bar<'a, SIZE> design and enables drivers to hold I/O memory mappings directly in their HRT private data, tied to the device lifetime. IoRequest::iomap_* methods now return the mapping directly instead of wrapping it in Devres. Callers that need device-managed revocation can call the new into_devres() method. Acked-by: Uwe Kleine-König <[email protected]> Reviewed-by: Eliot Courtney <[email protected]> Reviewed-by: Greg Kroah-Hartman <[email protected]> Reviewed-by: Alexandre Courbot <[email protected]> Reviewed-by: Gary Guo <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Danilo Krummrich <[email protected]>