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authorSebastian Ott <sebott@linux.vnet.ibm.com>2013-01-28 19:31:50 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-02-14 15:55:07 +0100
commite6a0b7c90f9f2663f470bbfaf83afcf52f8459e8 (patch)
tree4856e350b7dee7878d6ea3fb68b54976abbbbae7 /drivers/s390
parent69f5576f6c8c9d0f0b3670ee7c807a194b4c40f4 (diff)
downloadvexpress-lsk-e6a0b7c90f9f2663f470bbfaf83afcf52f8459e8.tar.gz
s390/cio: skip broken paths
Omit known to be broken paths (those set in path_noirq_mask) for the sense/set PGID and nop IO commands. Note: path_noirq_mask will be reset in ccw_device_verify_start (the paths could be healthy again). However if we restart a path verification via verify_start this mask will not be reset (there is no need to let the wait for an interrupt time out again - plus we do not want to loop once we deal with the paths in unknown path group state). Reviewed-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/device_pgid.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c
index 6f2987d8da9..f12beb72f26 100644
--- a/drivers/s390/cio/device_pgid.c
+++ b/drivers/s390/cio/device_pgid.c
@@ -70,8 +70,8 @@ static void nop_do(struct ccw_device *cdev)
struct subchannel *sch = to_subchannel(cdev->dev.parent);
struct ccw_request *req = &cdev->private->req;
- /* Adjust lpm. */
- req->lpm = lpm_adjust(req->lpm, sch->schib.pmcw.pam & sch->opm);
+ req->lpm = lpm_adjust(req->lpm, sch->schib.pmcw.pam & sch->opm &
+ ~cdev->private->path_noirq_mask);
if (!req->lpm)
goto out_nopath;
nop_build_cp(cdev);
@@ -345,8 +345,9 @@ static void snid_done(struct ccw_device *cdev, int rc)
else {
donepm = pgid_to_donepm(cdev);
sch->vpm = donepm & sch->opm;
- cdev->private->pgid_todo_mask &= ~donepm;
cdev->private->pgid_reset_mask |= reset;
+ cdev->private->pgid_todo_mask &=
+ ~(donepm | cdev->private->path_noirq_mask);
pgid_fill(cdev, pgid);
}
out:
@@ -400,8 +401,8 @@ static void snid_do(struct ccw_device *cdev)
struct subchannel *sch = to_subchannel(cdev->dev.parent);
struct ccw_request *req = &cdev->private->req;
- /* Adjust lpm if paths are not set in pam. */
- req->lpm = lpm_adjust(req->lpm, sch->schib.pmcw.pam);
+ req->lpm = lpm_adjust(req->lpm, sch->schib.pmcw.pam &
+ ~cdev->private->path_noirq_mask);
if (!req->lpm)
goto out_nopath;
snid_build_cp(cdev);