AMD IOMMU: don't remove protection domain from iommu_pd_list

Impact: save unneeded logic to add and remove domains to the list

The removal of a protection domain from the iommu_pd_list is not
necessary. Another benefit is that we save complexity because we don't
have to readd it later when the device no longer uses the domain.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index fee16fb..b7b3067 100644 (file)
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -844,7 +844,6 @@ static struct dma_ops_domain *find_protection_domain(u16 devid)
        list_for_each_entry(entry, &iommu_pd_list, list) {
                if (entry->target_dev == devid) {
                        ret = entry;
-                       list_del(&ret->list);
                        break;
                }
        }