[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: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index af500aa..bd6e8cf 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1059,6 +1059,8 @@
return 0;
}
+static void io_subchannel_quiesce(struct subchannel *);
+
static int
io_subchannel_remove (struct subchannel *sch)
{
@@ -1068,6 +1070,7 @@
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 @@
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 @@
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)