iommu/vt-d: Factor out dmar_alloc_dev_scope() for later reuse
Factor out function dmar_alloc_dev_scope() from dmar_parse_dev_scope()
for later reuse.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index eccb0c0..1b08ce8 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -69,6 +69,7 @@
extern int dmar_dev_scope_init(void);
extern int dmar_parse_dev_scope(void *start, void *end, int *cnt,
struct pci_dev ***devices, u16 segment);
+extern void *dmar_alloc_dev_scope(void *start, void *end, int *cnt);
extern void dmar_free_dev_scope(struct pci_dev ***devices, int *cnt);
/* Intel IOMMU detection */