[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>
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1 changed files with 9 additions and 1 deletions
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@ -1059,6 +1059,8 @@ out_schedule:
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return 0;
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}
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static void io_subchannel_quiesce(struct subchannel *);
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static int
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io_subchannel_remove (struct subchannel *sch)
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{
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@ -1068,6 +1070,7 @@ io_subchannel_remove (struct subchannel *sch)
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cdev = sch_get_cdev(sch);
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if (!cdev)
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goto out_free;
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io_subchannel_quiesce(sch);
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/* Set ccw device to not operational and drop reference. */
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spin_lock_irqsave(cdev->ccwlock, flags);
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sch_set_cdev(sch, NULL);
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@ -1150,7 +1153,7 @@ static int io_subchannel_chp_event(struct subchannel *sch,
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return 0;
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}
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static void io_subchannel_shutdown(struct subchannel *sch)
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static void io_subchannel_quiesce(struct subchannel *sch)
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{
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struct ccw_device *cdev;
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int ret;
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@ -1182,6 +1185,11 @@ out_unlock:
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spin_unlock_irq(sch->lock);
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}
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static void io_subchannel_shutdown(struct subchannel *sch)
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{
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io_subchannel_quiesce(sch);
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}
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static int device_is_disconnected(struct ccw_device *cdev)
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{
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if (!cdev)
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