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If the firmware_signature changes then OSPM should not attempt to resume from hibernate, but should instead perform a clean reboot. Set the global swsusp_hardware_signature to allow the generic code to include the value in the swsusp header on disk, and perform the appropriate check on resume. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20240412073530.2222496-3-dwmw2@infradead.org Signed-off-by: Will Deacon <will@kernel.org>