diff options
| author | Peter Oberparleiter <peter.oberparleiter@de.ibm.com> | 2006-06-29 14:56:38 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-06-29 14:56:38 +0200 |
| commit | da039bd1e872b89e1c92c6c891c43b96d0a1bc41 (patch) | |
| tree | 80e721d93ef558600c7a513cc20ab50b5ca7b5a9 | |
| parent | [S390] memory detection. (diff) | |
| download | linux-da039bd1e872b89e1c92c6c891c43b96d0a1bc41.tar.xz linux-da039bd1e872b89e1c92c6c891c43b96d0a1bc41.zip | |
[S390] cio long busy in read configuration data.
Trying to set a DASD root device online can fail under some circumstances
with the message "Read configuration data returned error -5". The cause
is that read configuration data incorrectly aborts with -EIO when it
encounters a temporary busy condition at a storage server.
Perform retry when encountering temporary busy conditions.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | drivers/s390/cio/device_ops.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index 795abb5a65ba..5c9904b418e1 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -270,7 +270,8 @@ ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb) * We didn't get channel end / device end. Check if path * verification has been started; we can retry after it has * finished. We also retry unit checks except for command reject - * or intervention required. + * or intervention required. Also check for long busy + * conditions. */ if (cdev->private->flags.doverify || cdev->private->state == DEV_STATE_VERIFY) @@ -279,6 +280,10 @@ ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb) !(irb->ecw[0] & (SNS0_CMD_REJECT | SNS0_INTERVENTION_REQ))) cdev->private->intparm = -EAGAIN; + else if ((irb->scsw.dstat & DEV_STAT_ATTENTION) && + (irb->scsw.dstat & DEV_STAT_DEV_END) && + (irb->scsw.dstat & DEV_STAT_UNIT_EXCEP)) + cdev->private->intparm = -EAGAIN; else cdev->private->intparm = -EIO; |