fw-cdev __user annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c
index 7538864..0647130 100644 (file)
--- a/drivers/firewire/fw-cdev.c
+++ b/drivers/firewire/fw-cdev.c
@@ -722,10 +722,11 @@ static int ioctl_queue_iso(struct client *client, void *buffer)
                buffer_end = 0;
        }
 
-       if (!access_ok(VERIFY_READ, request->packets, request->size))
+       p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(request->packets);
+
+       if (!access_ok(VERIFY_READ, p, request->size))
                return -EFAULT;
 
-       p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(request->packets);
        end = (void __user *)p + request->size;
        count = 0;
        while (p < end) {