firewire: fix compiler warnings on 64bit

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/firewire/fw-device-cdev.c b/drivers/firewire/fw-device-cdev.c
index b1b7edb0d2ad..f9f268861418 100644
--- a/drivers/firewire/fw-device-cdev.c
+++ b/drivers/firewire/fw-device-cdev.c
@@ -274,10 +274,11 @@ static int ioctl_get_info(struct client *client, void __user *arg)
 
         if (get_info.rom != 0) {
                 void __user *uptr = u64_to_uptr(get_info.rom);
-                size_t length = min(get_info.rom_length,
-                                    client->device->config_rom_length * 4);
+                size_t want = get_info.rom_length;
+                size_t have = client->device->config_rom_length * 4;
 
-                if (copy_to_user(uptr, client->device->config_rom, length))
+                if (copy_to_user(uptr, client->device->config_rom,
+                                 min(want, have)))
                         return -EFAULT;
         }
         get_info.rom_length = client->device->config_rom_length * 4;