This fix the following warning:
drivers/media/video/v4l2-compat-ioctl32.c: In function ‘get_microcode32’:
drivers/media/video/v4l2-compat-ioctl32.c:209: warning: ignoring return value 
of ‘copy_to_user’, declared with attribute warn_unused_result

Signed-off-by: Thiago Farina <tfrans...@gmail.com>
---
 drivers/media/video/v4l2-compat-ioctl32.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/media/video/v4l2-compat-ioctl32.c 
b/drivers/media/video/v4l2-compat-ioctl32.c
index e30e8df..55825ec 100644
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ b/drivers/media/video/v4l2-compat-ioctl32.c
@@ -206,7 +206,9 @@ static struct video_code __user *get_microcode32(struct 
video_code32 *kp)
         * user address is invalid, the native ioctl will do
         * the error handling for us
         */
-       (void) copy_to_user(up->loadwhat, kp->loadwhat, sizeof(up->loadwhat));
+       if (copy_to_user(up->loadwhat, kp->loadwhat, sizeof(up->loadwhat)))
+               return NULL;
+
        (void) put_user(kp->datasize, &up->datasize);
        (void) put_user(compat_ptr(kp->data), &up->data);
        return up;
-- 
1.7.3.2.343.g7d43d

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