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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2010-03-08 12:25:17 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-03-08 12:25:30 +0100 |
| commit | a290156f479af436f94ac23f5729a1e33c94293b (patch) | |
| tree | a0bf6cf6e673cc4dd4da081d95c19f69d2832e9a /drivers/s390 | |
| parent | 52898025cf7d458d029c18773d0ef49b4789d829 (diff) | |
| download | linux-3.10-a290156f479af436f94ac23f5729a1e33c94293b.tar.gz linux-3.10-a290156f479af436f94ac23f5729a1e33c94293b.tar.bz2 linux-3.10-a290156f479af436f94ac23f5729a1e33c94293b.zip | |
[S390] cio: fix init_count in case of recognition after steal lock
After we try to steal a lock on a ccw device in boxed state,
we have to restart device recognition and potentially reprobing.
In this case ccw_device_init_count was erroneously decreased
twice. This patch fixes the issue.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/device.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index c6abb75c461..6d229f3523a 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -764,7 +764,7 @@ static void sch_create_and_recog_new_device(struct subchannel *sch) static void io_subchannel_register(struct ccw_device *cdev) { struct subchannel *sch; - int ret; + int ret, adjust_init_count = 1; unsigned long flags; sch = to_subchannel(cdev->dev.parent); @@ -793,6 +793,7 @@ static void io_subchannel_register(struct ccw_device *cdev) cdev->private->dev_id.ssid, cdev->private->dev_id.devno); } + adjust_init_count = 0; goto out; } /* @@ -818,7 +819,7 @@ out: cdev->private->flags.recog_done = 1; wake_up(&cdev->private->wait_q); out_err: - if (atomic_dec_and_test(&ccw_device_init_count)) + if (adjust_init_count && atomic_dec_and_test(&ccw_device_init_count)) wake_up(&ccw_device_init_wq); } |