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iommu/vt-d: Allocate space for ACPI devices 

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
wifi-calibration
David Woodhouse 2014-03-07 14:39:27 +00:00
parent e625b4a95d
commit 07cb52ff6a
1 changed files with 10 additions and 12 deletions
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22
drivers/iommu/dmar.c
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@ -84,7 +84,8 @@ void *dmar_alloc_dev_scope(void *start, void *end, int *cnt)
*cnt = 0;
while (start < end) {
scope = start;
if (scope->entry_type == ACPI_DMAR_SCOPE_TYPE_ENDPOINT ||
if (scope->entry_type == ACPI_DMAR_SCOPE_TYPE_ACPI ||
scope->entry_type == ACPI_DMAR_SCOPE_TYPE_ENDPOINT ||
scope->entry_type == ACPI_DMAR_SCOPE_TYPE_BRIDGE)
(*cnt)++;
else if (scope->entry_type != ACPI_DMAR_SCOPE_TYPE_IOAPIC &&
@ -342,21 +343,18 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
dmaru->reg_base_addr = drhd->address;
dmaru->segment = drhd->segment;
dmaru->include_all = drhd->flags & 0x1; /* BIT0: INCLUDE_ALL */
if (!dmaru->include_all) {
dmaru->devices = dmar_alloc_dev_scope((void *)(drhd + 1),
((void *)drhd) + drhd->header.length,
&dmaru->devices_cnt);
if (dmaru->devices_cnt && dmaru->devices == NULL) {
kfree(dmaru);
return -ENOMEM;
}
dmaru->devices = dmar_alloc_dev_scope((void *)(drhd + 1),
((void *)drhd) + drhd->header.length,
&dmaru->devices_cnt);
if (dmaru->devices_cnt && dmaru->devices == NULL) {
kfree(dmaru);
return -ENOMEM;
}
ret = alloc_iommu(dmaru);
if (ret) {
if (!dmaru->include_all)
dmar_free_dev_scope(&dmaru->devices,
&dmaru->devices_cnt);
dmar_free_dev_scope(&dmaru->devices,
&dmaru->devices_cnt);
kfree(dmaru);
return ret;
}