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media: software_node: unregister software_nodes in reverse order

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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@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Daniel Scally <djrscally@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Daniel Scally 2021-01-07 14:28:29 +01:00 committed by Mauro Carvalho Chehab
parent d9b1103bc6
commit fc002f0f23
1 changed files with 11 additions and 4 deletions
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15
drivers/base/swnode.c
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@ -779,16 +779,23 @@ EXPORT_SYMBOL_GPL(software_node_register_node_group);
* software_node_unregister_node_group - Unregister a group of software nodes * software_node_unregister_node_group - Unregister a group of software nodes
* @node_group: NULL terminated array of software node pointers to be unregistered * @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 members of the array are
* children of another member then the children must appear later in the list such
* that they are unregistered first.
*/ */
void software_node_unregister_node_group(const struct software_node **node_group) void software_node_unregister_node_group(
const struct software_node **node_group)
{ {
unsigned int i; unsigned int i = 0;
if (!node_group) if (!node_group)
return; return;
for (i = 0; node_group[i]; i++) while (node_group[i])
i++;
while (i--)
software_node_unregister(node_group[i]); software_node_unregister(node_group[i]);
} }
EXPORT_SYMBOL_GPL(software_node_unregister_node_group); EXPORT_SYMBOL_GPL(software_node_unregister_node_group);