Setting an array control subset isn't allowed by the control framework,
which returns an error in prepare_ext_ctrls() if the control size
specified by userspace is smaller than the total size. There is thus no
need to initialize the array tail to its default value, as the tail will
always be empty.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 301abb7..adac93e 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1518,13 +1518,9 @@ static int user_to_ptr(struct v4l2_ext_control *c,
ctrl->is_new = 1;
if (ctrl->is_ptr && !ctrl->is_string) {
- unsigned idx;
-
ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0;
if (ret || !ctrl->is_array)
return ret;
- for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++)
- ctrl->type_ops->init(ctrl, idx, ptr);
return 0;
}
--
2.0.5
--
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