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-rw-r--r--drivers/usb/host/xen-hcd.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/usb/host/xen-hcd.c b/drivers/usb/host/xen-hcd.c
index be09fd9bac58..36f7c8a0b500 100644
--- a/drivers/usb/host/xen-hcd.c
+++ b/drivers/usb/host/xen-hcd.c
@@ -589,14 +589,12 @@ static void xenhcd_gnttab_map(struct xenhcd_info *info, void *addr, int length,
int nr_pages, int flags)
{
grant_ref_t ref;
- unsigned long buffer_mfn;
unsigned int offset;
unsigned int len = length;
unsigned int bytes;
int i;
for (i = 0; i < nr_pages; i++) {
- buffer_mfn = PFN_DOWN(arbitrary_virt_to_machine(addr).maddr);
offset = offset_in_page(addr);
bytes = PAGE_SIZE - offset;
@@ -605,7 +603,7 @@ static void xenhcd_gnttab_map(struct xenhcd_info *info, void *addr, int length,
ref = gnttab_claim_grant_reference(gref_head);
gnttab_grant_foreign_access_ref(ref, info->xbdev->otherend_id,
- buffer_mfn, flags);
+ virt_to_gfn(addr), flags);
seg[i].gref = ref;
seg[i].offset = (__u16)offset;
seg[i].length = (__u16)bytes;