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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2009-06-16 10:30:20 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-06-16 10:31:08 +0200 |
| commit | 823d494ac11111064cf39abd4178ce299414c771 (patch) | |
| tree | ede15540ad89c3412f16c24770408a4c34cc032c /drivers/s390/cio/device_ops.c | |
| parent | 03347e2592078a90df818670fddf97a33eec70fb (diff) | |
| download | kernel_samsung_smdk4412-823d494ac11111064cf39abd4178ce299414c771.zip kernel_samsung_smdk4412-823d494ac11111064cf39abd4178ce299414c771.tar.gz kernel_samsung_smdk4412-823d494ac11111064cf39abd4178ce299414c771.tar.bz2 | |
[S390] pm: ccw bus power management callbacks
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/device_ops.c')
| -rw-r--r-- | drivers/s390/cio/device_ops.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index bf0a24a..2d0efee 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -1,10 +1,8 @@ /* - * drivers/s390/cio/device_ops.c + * Copyright IBM Corp. 2002, 2009 * - * Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, - * IBM Corporation - * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) - * Cornelia Huck (cornelia.huck@de.ibm.com) + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * Cornelia Huck (cornelia.huck@de.ibm.com) */ #include <linux/module.h> #include <linux/init.h> @@ -116,12 +114,15 @@ int ccw_device_clear(struct ccw_device *cdev, unsigned long intparm) if (!cdev || !cdev->dev.parent) return -ENODEV; + sch = to_subchannel(cdev->dev.parent); + if (!sch->schib.pmcw.ena) + return -EINVAL; if (cdev->private->state == DEV_STATE_NOT_OPER) return -ENODEV; if (cdev->private->state != DEV_STATE_ONLINE && cdev->private->state != DEV_STATE_W4SENSE) return -EINVAL; - sch = to_subchannel(cdev->dev.parent); + ret = cio_clear(sch); if (ret == 0) cdev->private->intparm = intparm; @@ -162,6 +163,8 @@ int ccw_device_start_key(struct ccw_device *cdev, struct ccw1 *cpa, if (!cdev || !cdev->dev.parent) return -ENODEV; sch = to_subchannel(cdev->dev.parent); + if (!sch->schib.pmcw.ena) + return -EINVAL; if (cdev->private->state == DEV_STATE_NOT_OPER) return -ENODEV; if (cdev->private->state == DEV_STATE_VERIFY || @@ -337,12 +340,15 @@ int ccw_device_halt(struct ccw_device *cdev, unsigned long intparm) if (!cdev || !cdev->dev.parent) return -ENODEV; + sch = to_subchannel(cdev->dev.parent); + if (!sch->schib.pmcw.ena) + return -EINVAL; if (cdev->private->state == DEV_STATE_NOT_OPER) return -ENODEV; if (cdev->private->state != DEV_STATE_ONLINE && cdev->private->state != DEV_STATE_W4SENSE) return -EINVAL; - sch = to_subchannel(cdev->dev.parent); + ret = cio_halt(sch); if (ret == 0) cdev->private->intparm = intparm; @@ -369,6 +375,8 @@ int ccw_device_resume(struct ccw_device *cdev) if (!cdev || !cdev->dev.parent) return -ENODEV; sch = to_subchannel(cdev->dev.parent); + if (!sch->schib.pmcw.ena) + return -EINVAL; if (cdev->private->state == DEV_STATE_NOT_OPER) return -ENODEV; if (cdev->private->state != DEV_STATE_ONLINE || @@ -580,6 +588,8 @@ int ccw_device_tm_start_key(struct ccw_device *cdev, struct tcw *tcw, int rc; sch = to_subchannel(cdev->dev.parent); + if (!sch->schib.pmcw.ena) + return -EINVAL; if (cdev->private->state != DEV_STATE_ONLINE) return -EIO; /* Adjust requested path mask to excluded varied off paths. */ @@ -669,6 +679,8 @@ int ccw_device_tm_intrg(struct ccw_device *cdev) { struct subchannel *sch = to_subchannel(cdev->dev.parent); + if (!sch->schib.pmcw.ena) + return -EINVAL; if (cdev->private->state != DEV_STATE_ONLINE) return -EIO; if (!scsw_is_tm(&sch->schib.scsw) || |