Messages in this thread Patch in this message | | | Date | Mon, 18 Sep 2006 16:14:46 +0200 | From | Martin Schwidefsky <> | Subject | [S390] cio: update path groups on logical CHPID changes. |
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From: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
[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> ---
drivers/s390/cio/cio.c | 2 +- drivers/s390/cio/device_ops.c | 15 ++++++++++++++- 2 files changed, 15 insertions(+), 2 deletions(-)
diff -urpN linux-2.6/drivers/s390/cio/cio.c linux-2.6-patched/drivers/s390/cio/cio.c --- linux-2.6/drivers/s390/cio/cio.c 2006-09-18 14:11:42.000000000 +0200 +++ linux-2.6-patched/drivers/s390/cio/cio.c 2006-09-18 14:12:00.000000000 +0200 @@ -191,7 +191,7 @@ cio_start_key (struct subchannel *sch, / 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 diff -urpN linux-2.6/drivers/s390/cio/device_ops.c linux-2.6-patched/drivers/s390/cio/device_ops.c --- linux-2.6/drivers/s390/cio/device_ops.c 2006-09-18 14:11:04.000000000 +0200 +++ linux-2.6-patched/drivers/s390/cio/device_ops.c 2006-09-18 14:12:00.000000000 +0200 @@ -96,6 +96,12 @@ ccw_device_start_key(struct ccw_device * 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_devic 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 *c 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; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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