1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/of/address.c b/drivers/of/address.c
index 78a7dcbec7d8..6906a3f61bd8 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -765,7 +765,7 @@ unsigned long __weak pci_address_to_pio(phys_addr_t address)
         spin_lock(&io_range_lock);
         list_for_each_entry(res, &io_range_list, list) {
                 if (address >= res->start && address < res->start + res->size) {
-                        addr = res->start - address + offset;
+                        addr = address - res->start + offset;
                         break;
                 }
                 offset += res->size;