forked from luck/tmp_suning_uos_patched
iommu/vt-d: Allocate space for ACPI devices
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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e625b4a95d
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07cb52ff6a
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@ -84,7 +84,8 @@ void *dmar_alloc_dev_scope(void *start, void *end, int *cnt)
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*cnt = 0;
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while (start < end) {
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scope = start;
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if (scope->entry_type == ACPI_DMAR_SCOPE_TYPE_ENDPOINT ||
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if (scope->entry_type == ACPI_DMAR_SCOPE_TYPE_ACPI ||
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scope->entry_type == ACPI_DMAR_SCOPE_TYPE_ENDPOINT ||
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scope->entry_type == ACPI_DMAR_SCOPE_TYPE_BRIDGE)
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(*cnt)++;
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else if (scope->entry_type != ACPI_DMAR_SCOPE_TYPE_IOAPIC &&
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@ -342,21 +343,18 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
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dmaru->reg_base_addr = drhd->address;
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dmaru->segment = drhd->segment;
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dmaru->include_all = drhd->flags & 0x1; /* BIT0: INCLUDE_ALL */
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if (!dmaru->include_all) {
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dmaru->devices = dmar_alloc_dev_scope((void *)(drhd + 1),
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((void *)drhd) + drhd->header.length,
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&dmaru->devices_cnt);
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if (dmaru->devices_cnt && dmaru->devices == NULL) {
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kfree(dmaru);
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return -ENOMEM;
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}
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dmaru->devices = dmar_alloc_dev_scope((void *)(drhd + 1),
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((void *)drhd) + drhd->header.length,
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&dmaru->devices_cnt);
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if (dmaru->devices_cnt && dmaru->devices == NULL) {
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kfree(dmaru);
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return -ENOMEM;
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}
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ret = alloc_iommu(dmaru);
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if (ret) {
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if (!dmaru->include_all)
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dmar_free_dev_scope(&dmaru->devices,
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&dmaru->devices_cnt);
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dmar_free_dev_scope(&dmaru->devices,
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&dmaru->devices_cnt);
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kfree(dmaru);
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return ret;
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}
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