Messages in this thread Patch in this message | | | Date | Fri, 9 Dec 2005 16:23:12 +0100 | From | Martin Schwidefsky <> | Subject | [patch 2/17] s390: re-activated path detection. |
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From: Cornelia Huck <cohuck@de.ibm.com>
[patch 2/17] s390: re-activated path detection.
If we receive path not operational indications (pnom in pmcw nonzero), we switch off those paths. To catch them becoming available again, we have to recalculate the lpm from the pmcw each time we start path verification.
Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
drivers/s390/cio/device_pgid.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+)
diff -urpN linux-2.6/drivers/s390/cio/device_pgid.c linux-2.6-patched/drivers/s390/cio/device_pgid.c --- linux-2.6/drivers/s390/cio/device_pgid.c 2005-10-28 02:02:08.000000000 +0200 +++ linux-2.6-patched/drivers/s390/cio/device_pgid.c 2005-12-09 14:24:21.000000000 +0100 @@ -22,6 +22,7 @@ #include "cio_debug.h" #include "css.h" #include "device.h" +#include "ioasm.h" /* * Start Sense Path Group ID helper function. Used in ccw_device_recog @@ -364,8 +365,22 @@ ccw_device_verify_irq(struct ccw_device void ccw_device_verify_start(struct ccw_device *cdev) { + struct subchannel *sch = to_subchannel(cdev->dev.parent); + cdev->private->flags.pgid_single = 0; cdev->private->iretry = 5; + /* + * Update sch->lpm with current values to catch paths becoming + * available again. + */ + if (stsch(sch->irq, &sch->schib)) { + ccw_device_verify_done(cdev, -ENODEV); + return; + } + sch->lpm = sch->schib.pmcw.pim & + sch->schib.pmcw.pam & + sch->schib.pmcw.pom & + sch->opm; __ccw_device_verify_start(cdev); } - 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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