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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2009-12-07 12:51:38 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2009-12-07 12:51:32 +0100 |
| commit | 6e9a0f67deeca90c433ac40b887cee8da3bdcea2 (patch) | |
| tree | 870e9fecb77bb5ee0357999363c251ebd5dbe88a /drivers/s390/cio | |
| parent | [S390] cio: handle busy subchannel in ccw_device_move_to_sch (diff) | |
| download | linux-6e9a0f67deeca90c433ac40b887cee8da3bdcea2.tar.xz linux-6e9a0f67deeca90c433ac40b887cee8da3bdcea2.zip | |
[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>
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/device.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index af500aac24ef..bd6e8cf77fad 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -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) |