Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 15/21] driver core: bus: clean up driver_find() | Date | Wed, 8 Feb 2023 12:13:24 +0100 |
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Convert the driver_find() function to use bus_to_subsys() and not use the back-pointer to the private structure.
Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/base/bus.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 727de4c36d59..951d63c8e885 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -1302,16 +1302,23 @@ EXPORT_SYMBOL_GPL(subsys_virtual_register); */ struct device_driver *driver_find(const char *name, struct bus_type *bus) { - struct kobject *k = kset_find_obj(bus->p->drivers_kset, name); + struct subsys_private *sp = bus_to_subsys(bus); + struct kobject *k; struct driver_private *priv; - if (k) { - /* Drop reference added by kset_find_obj() */ - kobject_put(k); - priv = to_driver(k); - return priv->driver; - } - return NULL; + if (!sp) + return NULL; + + k = kset_find_obj(sp->drivers_kset, name); + subsys_put(sp); + if (!k) + return NULL; + + priv = to_driver(k); + + /* Drop reference added by kset_find_obj() */ + kobject_put(k); + return priv->driver; } EXPORT_SYMBOL_GPL(driver_find); -- 2.39.1
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