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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2010-05-26 23:27:09 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-05-26 23:27:09 +0200 |
| commit | a23ed009a726feeafdbabeaf5f0bde1a3f04d121 (patch) | |
| tree | cd2448ca9544f23acacc40e5ab2b95b4636ef923 | |
| parent | [S390] cio: unit check handling during internal I/O (diff) | |
| download | linux-a23ed009a726feeafdbabeaf5f0bde1a3f04d121.tar.xz linux-a23ed009a726feeafdbabeaf5f0bde1a3f04d121.zip | |
[S390] dasd: unit check handling during internal cio I/O
React on unit checks during cio internal I/O.
Handle as unsolicited interrupt and advice cio to retry.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | drivers/s390/block/dasd.c | 23 | ||||
| -rw-r--r-- | drivers/s390/block/dasd_eckd.c | 1 | ||||
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 1 |
3 files changed, 25 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 0e86247d791e..33975e922d65 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -1186,6 +1186,29 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm, dasd_schedule_device_bh(device); } +enum uc_todo dasd_generic_uc_handler(struct ccw_device *cdev, struct irb *irb) +{ + struct dasd_device *device; + + device = dasd_device_from_cdev_locked(cdev); + + if (IS_ERR(device)) + goto out; + if (test_bit(DASD_FLAG_OFFLINE, &device->flags) || + device->state != device->target || + !device->discipline->handle_unsolicited_interrupt){ + dasd_put_device(device); + goto out; + } + + dasd_device_clear_timer(device); + device->discipline->handle_unsolicited_interrupt(device, irb); + dasd_put_device(device); +out: + return UC_TODO_RETRY; +} +EXPORT_SYMBOL_GPL(dasd_generic_uc_handler); + /* * If we have an error on a dasd_block layer request then we cancel * and return all further requests from the same dasd_block as well. diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 5b1cd8d6e971..ab84da5592e8 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -3436,6 +3436,7 @@ static struct ccw_driver dasd_eckd_driver = { .freeze = dasd_generic_pm_freeze, .thaw = dasd_generic_restore_device, .restore = dasd_generic_restore_device, + .uc_handler = dasd_generic_uc_handler, }; /* diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 32fac186ba3f..49b431d135e0 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -617,6 +617,7 @@ int dasd_generic_notify(struct ccw_device *, int); void dasd_generic_handle_state_change(struct dasd_device *); int dasd_generic_pm_freeze(struct ccw_device *); int dasd_generic_restore_device(struct ccw_device *); +enum uc_todo dasd_generic_uc_handler(struct ccw_device *, struct irb *); int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int); char *dasd_get_sense(struct irb *); |