1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c
index 415e9abb062b..a834221b7588 100644
--- a/drivers/firewire/fw-device.c
+++ b/drivers/firewire/fw-device.c
@@ -240,7 +240,7 @@ show_rom_index_attribute(struct device *dev,
         struct fw_unit *unit = fw_unit(dev);
 
         return snprintf(buf, PAGE_SIZE, "%d\n",
-                        unit->directory - device->config_rom);
+                        (int)(unit->directory - device->config_rom));
 }
 
 static struct device_attribute rom_index_attribute = {