Commit f451c7a5 authored by Vasant Hegde's avatar Vasant Hegde Committed by Joerg Roedel
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iommu/amd: Skip attach device domain is same as new domain 



If device->domain is same as new domain then we can skip the
device attach process.

Signed-off-by: default avatarVasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20230215052642.6016-2-vasant.hegde@amd.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 996d120b

drivers/iommu/amd/iommu.c

+7 −0
Original line number Diff line number Diff line
@@ -2184,6 +2184,13 @@ static int amd_iommu_attach_device(struct iommu_domain *dom, 
	struct amd_iommu *iommu = rlookup_amd_iommu(dev);

	int ret;



	/*

	 * Skip attach device to domain if new domain is same as

	 * devices current domain

	 */

	if (dev_data->domain == domain)

		return 0;



	dev_data->defer_attach = false;



	if (dev_data->domain)