Commit 93a27592 authored by Cornelia Huck's avatar Cornelia Huck Committed by Martin Schwidefsky
Browse files

[S390] pm: io subchannel driver power management callbacks 



Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent dcbd16d5

drivers/s390/cio/device.c

+14 −0
Original line number Diff line number Diff line
@@ -138,6 +138,19 @@ static struct css_device_id io_subchannel_ids[] = { 
};

MODULE_DEVICE_TABLE(css, io_subchannel_ids);



static int io_subchannel_prepare(struct subchannel *sch)

{

	struct ccw_device *cdev;

	/*

	 * Don't allow suspend while a ccw device registration

	 * is still outstanding.

	 */

	cdev = sch_get_cdev(sch);

	if (cdev && !device_is_registered(&cdev->dev))

		return -EAGAIN;

	return 0;

}



static struct css_driver io_subchannel_driver = {

	.owner = THIS_MODULE,

	.subchannel_type = io_subchannel_ids,
@@ -148,6 +161,7 @@ static struct css_driver io_subchannel_driver = { 
	.probe = io_subchannel_probe,

	.remove = io_subchannel_remove,

	.shutdown = io_subchannel_shutdown,

	.prepare = io_subchannel_prepare,

};



struct workqueue_struct *ccw_device_work;