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[S390] cio: update path groups on logical CHPID changes. 

CHPIDs that are logically varied off will not be removed from
a CCW device's path group because resign-from-pathgroup command is
issued with invalid path mask of 0 because internal CCW operations
are masked by the logical path mask after the relevant bits are
cleared by the vary operation.
Do not apply logical path mask to internal operations.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Peter Oberparleiter 2006-09-20 15:59:57 +02:00 committed by Martin Schwidefsky
parent dd9963f9dd
commit e0e32c8eba
2 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/s390/cio/cio.c
View File

@ -191,7 +191,7 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */
sch->orb.pfch = sch->options.prefetch == 0;
sch->orb.spnd = sch->options.suspend;
sch->orb.ssic = sch->options.suspend && sch->options.inter;
sch->orb.lpm = (lpm != 0) ? (lpm & sch->opm) : sch->lpm;
sch->orb.lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
/*
* for 64 bit we always support 64 bit IDAWs with 4k page size only

15
drivers/s390/cio/device_ops.c
View File

@ -96,6 +96,12 @@ ccw_device_start_key(struct ccw_device *cdev, struct ccw1 *cpa,
ret = cio_set_options (sch, flags);
if (ret)
return ret;
/* Adjust requested path mask to excluded varied off paths. */
if (lpm) {
lpm &= sch->opm;
if (lpm == 0)
return -EACCES;
}
ret = cio_start_key (sch, cpa, lpm, key);
if (ret == 0)
cdev->private->intparm = intparm;
@ -304,7 +310,7 @@ __ccw_device_retry_loop(struct ccw_device *cdev, struct ccw1 *ccw, long magic, _
sch = to_subchannel(cdev->dev.parent);
do {
ret = cio_start (sch, ccw, lpm);
if ((ret == -EBUSY) || (ret == -EACCES)) {
if (ret == -EBUSY) {
/* Try again later. */
spin_unlock_irq(&sch->lock);
msleep(10);
@ -433,6 +439,13 @@ read_conf_data_lpm (struct ccw_device *cdev, void **buffer, int *length, __u8 lp
if (!ciw || ciw->cmd == 0)
return -EOPNOTSUPP;
/* Adjust requested path mask to excluded varied off paths. */
if (lpm) {
lpm &= sch->opm;
if (lpm == 0)
return -EACCES;
}
rcd_ccw = kzalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
if (!rcd_ccw)
return -ENOMEM;