1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c
index 12158e0d009b..da9d6d25cf6d 100644
--- a/drivers/acpi/pci_slot.c
+++ b/drivers/acpi/pci_slot.c
@@ -57,7 +57,7 @@ ACPI_MODULE_NAME("pci_slot");
                                 MY_NAME , ## arg);              \
         } while (0)
 
-#define SLOT_NAME_SIZE 20               /* Inspired by #define in acpiphp.h */
+#define SLOT_NAME_SIZE 21               /* Inspired by #define in acpiphp.h */
 
 struct acpi_pci_slot {
         acpi_handle root_handle;        /* handle of the root bridge */
@@ -149,7 +149,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
                 return AE_OK;
         }
 
-        snprintf(name, sizeof(name), "%u", (u32)sun);
+        snprintf(name, sizeof(name), "%llu", sun);
         pci_slot = pci_create_slot(pci_bus, device, name, NULL);
         if (IS_ERR(pci_slot)) {
                 err("pci_create_slot returned %ld\n", PTR_ERR(pci_slot));