Hi Daniel,
On Thu, Dec 17, 2020 at 11:43:30PM +0000, Daniel Scally wrote:
> To maintain consistency with software_node_unregister_nodes(), reverse
> the order in which the software_node_unregister_node_group() function
> unregisters nodes.
>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Signed-off-by: Daniel Scally <djrscally@xxxxxxxxx>
> ---
> Changes in v2:
>
> - Initialised i properly
>
> drivers/base/swnode.c | 12 +++++++++---
> 1 file changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
> index cfd1faea48a7..2b90d380039b 100644
> --- a/drivers/base/swnode.c
> +++ b/drivers/base/swnode.c
> @@ -778,16 +778,22 @@ EXPORT_SYMBOL_GPL(software_node_register_node_group);
> * software_node_unregister_node_group - Unregister a group of software nodes
> * @node_group: NULL terminated array of software node pointers to be unregistered
> *
> - * Unregister multiple software nodes at once.
> + * Unregister multiple software nodes at once. The array will be unwound in
> + * reverse order (I.E. last entry first) and thus if any member of the array
> + * has its .parent member set then they should appear later in the array such
> + * that they are unregistered first.
> */
> void software_node_unregister_node_group(const struct software_node **node_group)
> {
> - unsigned int i;
> + unsigned int i = 0;
>
> if (!node_group)
> return;
>
> - for (i = 0; node_group[i]; i++)
> + while (node_group[i]->name)
Why is this change made? node_group is a NULL-terminated array, and the
above accesses the name pointer on each entry before checking the entry is
non-NULL. Or do I miss something here?
> + i++;
> +
> + while (i--)
> software_node_unregister(node_group[i]);
> }
> EXPORT_SYMBOL_GPL(software_node_unregister_node_group);
--
Regards,
Sakari Ailus
