driver core: Add device link flag DL_FLAG_AUTOPROBE_CONSUMER
Add a new device link flag, DL_FLAG_AUTOPROBE_CONSUMER, to request the
driver core to probe for a consumer driver automatically after binding
a driver to the supplier device on a persistent managed device link.
As unbinding the supplier driver on a managed device link causes the
consumer driver to be detached from its device automatically, this
flag provides a complementary mechanism which is needed to address
some "composite device" use cases.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/device.h b/include/linux/device.h
index 5f49d2e..0ab0a3a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -341,6 +341,7 @@
struct device *start, void *data,
int (*match)(struct device *dev, void *data));
+void driver_deferred_probe_add(struct device *dev);
int driver_deferred_probe_check_state(struct device *dev);
/**
@@ -827,12 +828,14 @@
* PM_RUNTIME: If set, the runtime PM framework will use this link.
* RPM_ACTIVE: Run pm_runtime_get_sync() on the supplier during link creation.
* AUTOREMOVE_SUPPLIER: Remove the link automatically on supplier driver unbind.
+ * AUTOPROBE_CONSUMER: Probe consumer driver automatically after supplier binds.
*/
#define DL_FLAG_STATELESS BIT(0)
#define DL_FLAG_AUTOREMOVE_CONSUMER BIT(1)
#define DL_FLAG_PM_RUNTIME BIT(2)
#define DL_FLAG_RPM_ACTIVE BIT(3)
#define DL_FLAG_AUTOREMOVE_SUPPLIER BIT(4)
+#define DL_FLAG_AUTOPROBE_CONSUMER BIT(5)
/**
* struct device_link - Device link representation.