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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2012-01-18 18:03:41 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-01-18 18:03:42 +0100 |
| commit | f16330316321d1c388d13096f6858f5d2dac29dc (patch) | |
| tree | 0dda4b86553b3e5881c8a53391f24210b17a2eb6 /drivers/s390/block/dasd_eckd.c | |
| parent | f9f8d02fae0dc47d8868fd069bb88d12f8d1d71f (diff) | |
| download | blackbird-op-linux-f16330316321d1c388d13096f6858f5d2dac29dc.tar.gz blackbird-op-linux-f16330316321d1c388d13096f6858f5d2dac29dc.zip | |
[S390] dasd: revalidate server for new pathgroup
If a pathgroup is established we get an event and have to revalidate
the server to propagate supported features like PAV and enable them.
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_eckd.c')
| -rw-r--r-- | drivers/s390/block/dasd_eckd.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 1b6e7ea9347f..70880be26015 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1550,6 +1550,24 @@ static void dasd_eckd_validate_server(struct dasd_device *device) "returned rc=%d", private->uid.ssid, rc); } +/* + * worker to do a validate server in case of a lost pathgroup + */ +static void dasd_eckd_do_validate_server(struct work_struct *work) +{ + struct dasd_device *device = container_of(work, struct dasd_device, + kick_validate); + dasd_eckd_validate_server(device); + dasd_put_device(device); +} + +static void dasd_eckd_kick_validate_server(struct dasd_device *device) +{ + dasd_get_device(device); + /* queue call to do_validate_server to the kernel event daemon. */ + schedule_work(&device->kick_validate); +} + static u32 get_fcx_max_data(struct dasd_device *device) { #if defined(CONFIG_64BIT) @@ -1595,6 +1613,9 @@ dasd_eckd_check_characteristics(struct dasd_device *device) int readonly; unsigned long value; + /* setup work queue for validate server*/ + INIT_WORK(&device->kick_validate, dasd_eckd_do_validate_server); + if (!ccw_device_is_pathgroup(device->cdev)) { dev_warn(&device->cdev->dev, "A channel path group could not be established\n"); @@ -4259,6 +4280,7 @@ static struct dasd_discipline dasd_eckd_discipline = { .restore = dasd_eckd_restore_device, .reload = dasd_eckd_reload_device, .get_uid = dasd_eckd_get_uid, + .kick_validate = dasd_eckd_kick_validate_server, }; static int __init |
