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Commit b600c5a1 authored by Yong Wu's avatar Yong Wu Committed by Greg Kroah-Hartman
Browse files

driver core: Remove the link if there is no driver with AUTO flag 



commit 0fe6f7874d467456da6f6a221dd92499a3ab1780 upstream.

DL_FLAG_AUTOREMOVE_CONSUMER/SUPPLIER means "Remove the link
automatically on consumer/supplier driver unbind", that means we should
remove whole the device_link when there is no this driver no matter what
the ref_count of the link is.

CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarYong Wu <yong.wu@mediatek.com>
Signed-off-by: default avatarSaravana Kannan <saravanak@google.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6bdf6513

drivers/base/core.c

+2 −2
Original line number Diff line number Diff line
@@ -546,7 +546,7 @@ static void __device_links_no_driver(struct device *dev) 
			continue;



		if (link->flags & DL_FLAG_AUTOREMOVE_CONSUMER)

			kref_put(&link->kref, __device_link_del);

			__device_link_del(&link->kref);

		else if (link->status != DL_STATE_SUPPLIER_UNBIND)

			WRITE_ONCE(link->status, DL_STATE_AVAILABLE);

	}
@@ -591,7 +591,7 @@ void device_links_driver_cleanup(struct device *dev) 
		 */

		if (link->status == DL_STATE_SUPPLIER_UNBIND &&

		    link->flags & DL_FLAG_AUTOREMOVE_SUPPLIER)

			kref_put(&link->kref, __device_link_del);

			__device_link_del(&link->kref);



		WRITE_ONCE(link->status, DL_STATE_DORMANT);

	}