Commit c336f75e authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab

[media] v4l2-ctrls: return elem_size instead of strlen

When getting a string and the size given by the application is too
short return the max length the string can have (elem_size) instead
of the string length + 1. That makes more sense.
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 302ab7ce
......@@ -1332,7 +1332,7 @@ static int ptr_to_user(struct v4l2_ext_control *c,
case V4L2_CTRL_TYPE_STRING:
len = strlen(ptr.p_char);
if (c->size < len + 1) {
c->size = len + 1;
c->size = ctrl->elem_size;
return -ENOSPC;
}
return copy_to_user(c->string, ptr.p_char, len + 1) ?
......
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