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authorStefan Haberland <stefan.haberland@de.ibm.com>2014-10-01 14:39:47 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-10-09 09:13:54 +0200
commit5db8440c36a3308649b99f65b68195394dd7fed4 (patch)
treed45026f110bcd99a6893556ade5dcafc740730d2 /drivers/s390/block/dasd.c
parent362ce84f43aac61589a8b60e5bb3fcfae9801b13 (diff)
downloadop-kernel-dev-5db8440c36a3308649b99f65b68195394dd7fed4.zip
op-kernel-dev-5db8440c36a3308649b99f65b68195394dd7fed4.tar.gz
s390/dasd: add support for control unit initiated reconfiguration
Add support for Control Unit Initiated Reconfiguration (CUIR) to Linux, a storage server interface to reconcile concurrent hardware changes between storage and host. Reviewed-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index f0895f4..329db99 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1660,6 +1660,14 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
device->discipline->check_for_device_change(device, cqr, irb);
dasd_put_device(device);
}
+
+ /* check for for attention message */
+ if (scsw_dstat(&irb->scsw) & DEV_STAT_ATTENTION) {
+ device = dasd_device_from_cdev_locked(cdev);
+ device->discipline->check_attention(device, irb->esw.esw1.lpum);
+ dasd_put_device(device);
+ }
+
if (!cqr)
return;
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