Commit 6e9a0f67 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

[S390] cio: quiesce subchannel in io_subchannel_remove



Ensure that there will be no more interrupts for an
unregistered device by using the same quiesce and disable loop
as in io_subchannel_shutdown.
Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 0c609fca
......@@ -1059,6 +1059,8 @@ out_schedule:
return 0;
}
static void io_subchannel_quiesce(struct subchannel *);
static int
io_subchannel_remove (struct subchannel *sch)
{
......@@ -1068,6 +1070,7 @@ io_subchannel_remove (struct subchannel *sch)
cdev = sch_get_cdev(sch);
if (!cdev)
goto out_free;
io_subchannel_quiesce(sch);
/* Set ccw device to not operational and drop reference. */
spin_lock_irqsave(cdev->ccwlock, flags);
sch_set_cdev(sch, NULL);
......@@ -1150,7 +1153,7 @@ static int io_subchannel_chp_event(struct subchannel *sch,
return 0;
}
static void io_subchannel_shutdown(struct subchannel *sch)
static void io_subchannel_quiesce(struct subchannel *sch)
{
struct ccw_device *cdev;
int ret;
......@@ -1182,6 +1185,11 @@ out_unlock:
spin_unlock_irq(sch->lock);
}
static void io_subchannel_shutdown(struct subchannel *sch)
{
io_subchannel_quiesce(sch);
}
static int device_is_disconnected(struct ccw_device *cdev)
{
if (!cdev)
......
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