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Commit 2d80391d authored by Jani Nikula's avatar Jani Nikula Committed by Daniel Vetter
Browse files

drm/i915/opregion: use BUILD_BUG_ON to verify mailbox struct sizes 



Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 856974a4

drivers/gpu/drm/i915/intel_opregion.c

+5 −0
Original line number Diff line number Diff line
@@ -862,6 +862,11 @@ int intel_opregion_setup(struct drm_device *dev) 
	char buf[sizeof(OPREGION_SIGNATURE)];

	int err = 0;



	BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);

	BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);

	BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);

	BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);



	pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);

	DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);

	if (asls == 0) {